1 SPECIFICATIONS
and
SPECIAL PROVISIONS
for
IntersecƟon Improvements
at
Alameda de las Pulgas / Stockbridge Avenue
Town of Atherton
San Mateo County, California
Gary Hansen, P.E.
Interwest
9300 W. Stockton Blvd., Suite 105
Elk Grove, CA 95758
(916) 683-3340
May 16, 2025
C26543
Gary Hansen
03-31-25
2 Table of Contents
1. RECTANGULUAR RAPID FLASHING BEACON (RRFB) CROSSWALK PUSH BUTTON ACTIVATED WARNING SYSTEM, ROADSIDE SIGNS AND PAVEMENT DELINEATION........................................ 4
1.01 DESCRIPTION OF WORK .................................................................................................. 4
1.02 REFERENCES, CODES AND STANDARDS .......................................................................... 4
1.03 TRAFFIC CONTROL SYSTEM ............................................................................................. 4
1.04 COST BREAK-DOWN ........................................................................................................ 5
1.05 SCHEDULING OF WORK ................................................................................................... 6
1.06 MAINTAINING EXISTING AND TEMPORARY ELECTRICAL SYSTEMS ................................ 6
1.07 EXCAVATING AND BACKFILLING ...................................................................................... 7
1.08 FOUNDATIONS ................................................................................................................ 7
1.09 STANDARDS, POLES, PEDESTALS, AND POSTS ................................................................. 7
1.10 CONDUIT ......................................................................................................................... 7
1.11 PULL BOXES ..................................................................................................................... 7
1.12 CONDUCTORS AND WIRING............................................................................................ 8
1.13 RECTANGULAR RAPID FLASHING BEACON (RRFB) SYSTEM ............................................ 8
1.14 BONDING AND GROUNDING .......................................................................................... 8
1.17 PEDESTRIAN PUSH BUTTONS .......................................................................................... 8
1.21 WARRANTIES, GUARANTEES AND INSTRUCTION SHEETS .............................................. 8
1.22 PAYMENT ......................................................................................................................... 8
2. PAVEMENT DELINEATION AND SIGNS ............................................................................... 10
2.01 GENERAL ....................................................................................................................... 10
2.02 ORDER OF WORK .......................................................................................................... 10
2.03 PUBLIC SAFETY .............................................................................................................. 11
2.04 WATER POLLUTION CONTROL ....................................................................................... 13
2.05 CLEARING AND GRUBBING ........................................................................................... 13
2.06 EXISTING FACILITIES ...................................................................................................... 14
2.07 MAINTAINING TRAFFIC ................................................................................................. 14 3 2.08 CONSTRUCTION AREA SIGNS ........................................................................................ 14
2.10 SIGNING ........................................................................................................................ 14
2.11 OBSTRUCTIONS ............................................................................................................. 16
2.12 TRAFFIC CONTROL SYSTEM ........................................................................................... 16
2.13 REMOVE PAVEMENT MARKER ...................................................................................... 17
2.14 REMOVE TRAFFIC STRIPE AND PAVEMENT MARKING .................................................. 18
2.15 REMOVE CONCRETE ...................................................................................................... 18
2.16 TREE REMOVAL ............................................................................................................. 18
2.17 THERMOPLASTIC AND PAINT TRAFFIC STRIPES AND PAVEMENT MARKINGS .............. 18
4 1. RECTANGULUAR RAPID FLASHING BEACON (RRFB) CROSSWALK PUSH
BUTTON ACTIVATED WARNING SYSTEM, ROADSIDE SIGNS AND PAVEMENT
DELINEATION
1.01 DESCRIPTION OF WORK
The RRFB System, Roadside Signs and Pavement DelineaƟon shall be installed as indicated on the project Plans and shall conform to the provisions in SecƟons 82, 84 and 86 of the 2023 Caltrans Standard SpecificaƟons and these special provisions. All work covered by these special provisions shall conform to the provisions in the 2023 Caltrans Standard Plans and SpecificaƟons, hereaŌer referred to as the “Standard Plans” and “Standard SpecificaƟons,” and these special provisions.
The RRFB System, Roadside Sign and Pavement DelineaƟon work shall be performed at the following locaƟon:
Alameda de las Pulgas / Stockbridge Avenue, Atherton
San Mateo County, California
The work includes but is not limited to, all work shown on the plans, specified herein or in the 2023 Standard Plans and Standard SpecificaƟons, or required to provide a complete the RRFB System, roadside sign and pavement delineaƟon work as determined by the Engineer.
1.02 REFERENCES, CODES AND STANDARDS
In addiƟon to the regulaƟons and codes specified in SecƟon 7, “Legal RelaƟons and ResponsibiliƟes to the Public”, al work and materials shall be in accordance with the RegulaƟons of the Pacific Gas and Electric Company (PG&E) pertaining to service equipment and installaƟons thereof. The work embraced herein shall also be constructed in conformance with the current ediƟon of the NaƟonal Electrical Code, and these Special Provisions.
1.03 TRAFFIC CONTROL SYSTEM
The Contractor shall be responsible for the preparaƟon of a construcƟon Traffic Control Plan (TCP). The TCP shall be prepared by a California registered Civil Engineer with experience in the preparaƟon of traffic control plans. ConstrucƟon work shall not commence unƟl the TCP has been reviewed and approved by the Town Engineer.
5 Traffic control system shall consist of closing roadway shoulders and narrowing or closing traffic lanes in accordance with the provisions of SecƟon 12, "Temporary Traffic Control," of the Standard SpecificaƟons, and these special provisions.
Contractor shall move or place temporary road signs necessary to keep at least one lane of traffic open in each direcƟon during construcƟon.
The provisions of this secƟon do not relieve the Contractor from the responsibility to provide such addiƟonal devices or take such measures as may be necessary to comply with the provisions of SecƟon 7-1.04, "Public Safety," of the Standard SpecificaƟons.
If any component in the traffic control system is damaged, displaced, or ceases to operate or funcƟon as specified, from any cause, during the progress of the work, the Contractor shall immediately repair said component to its original condiƟon or replace said component and shall restore the component to its original locaƟon.
When lane closures are made for work periods only, at the end of each work period, all components of the traffic control system, except portable delineators placed along open trenches or excavaƟon adjacent to the traveled way, shall be removed from the traveled way, shoulder and auxiliary lanes. If the Contractor so elects, said components may be stored at selected central locaƟons, approved by the Engineer, within the limits of the highway right of way. Upon compleƟon of the work requiring lane closure, all components of the traffic control system shall be removed from the site of the work and shall become the property of the Contractor.
At no Ɵme shall the roadway be closed to traffic, unless approved the Town. Lane restricƟons shall not commence before 8:30 a.m. and shall cease at 2:00 p.m. during the Ɵme that school is in session. Lane restricƟons shall not commence before 8:30 a.m. and shall cease at 4:30 p.m. during school vacaƟon / holiday Ɵme. School vacaƟon and holiday schedule includes the days of 5/26/25, and from 6/6/25 to 8/13/25. No work that interferes with public traffic shall be done outside these hours except for work required under SecƟons 7-1.03 "Public Convenience," and SecƟon 7-1.04 "Public Safety," of the Standard SpecificaƟons. When work is not acƟvely in progress the full width of the traveled way shall be open for public traffic. Minor deviaƟons from the requirements of this secƟon concerning hours of work may be permiƩed upon approval by the Town Engineer.
1.04 COST BREAK-DOWN
The Contractor shall determine the quanƟƟes required to complete the work shown on the plans.
The quanƟƟes and values shall be included in the cost break-down submiƩed to the Engineer for approval. The Contractor shall be responsible for the accuracy of the quanƟƟes and values used in the cost break-down submiƩed for approval.
6 The cost break-down shall be submiƩed to the Engineer for approval within 15 days aŌer the contract has been approved. The cost break-down shall be approved, in wriƟng, by the Engineer before any parƟal payment for the items of electrical work will be made.
The cost breakdown shall, as a minimum, include the following items:
• signal heads and hardware - each type*
• pedestrian signal heads and hardware - each type*
• pedestrian push buƩons*
• pole-mounted signs and mounƟng hardware*
• baƩeries, solar panels and communicaƟons*
• supplemental signs
• pavement delineaƟon
*Included in the Tapco RRFB system
1.05 SCHEDULING OF WORK
Schedule of work shall conform to the provisions of SecƟons 86 and 87 of the Standard SpecificaƟons and these special provisions. Hours of work shall be as stated in SecƟon 1.06 of these special provisions.
The first order of work shall be to place the order for the RRFB system, supplemental signs and pavement delineaƟon. The Contractor shall provide a copy of the product order packet to the Engineer for approval prior to ordering any equipment. The Contractor shall furnish the Engineer with a statement from the vendor that the order for said equipment has been received and accepted by said vendor.
Prior to commencement of the RRFB funcƟonal test, all items of work related to traffic signal control shall be completed, and all roadside signs, pavement delineaƟon and pavement markers shall be in place at that locaƟon.
1.06 MAINTAINING EXISTING AND TEMPORARY ELECTRICAL SYSTEMS
The contractor shall maintain the operaƟon of the exisƟng street light on the NW corner of the intersecƟon for the duraƟon of the project.
7 1.07 EXCAVATING AND BACKFILLING
ExcavaƟng and backfilling shall conform to the provisions in SecƟon 87-1.03E, “ExcavaƟng and Backfilling for Electrical Systems,” of the Standard SpecificaƟons and these Special Provisions.
ExcavaƟon shall not be permiƩed under exisƟng roadway pavement, including public and private streets, except with prior approval of the Engineer. Conduit shall be placed by jacking, drilling, or rock wheel trenching methods in such cases. ExcavaƟon will be permiƩed under exisƟng sidewalk or driveway areas. Backfill material shall be a two-sack concrete-sand slurry. Each area affected by excavaƟon or trenching, or any other construcƟon acƟviƟes, shall be replaced (in its enƟrety) to the saƟsfacƟon of the Engineer.
1.08 FOUNDATIONS
FoundaƟons shall conform to the provisions of SecƟon 87-1.03E(3), “Concrete Pads, FoundaƟons, and Pedestals,” of the Standard SpecificaƟons, and these special provisions.
1.09 STANDARDS, POLES, PEDESTALS, AND POSTS
Standards, steel pedestals and posts shall conform to the provisions of SecƟon 87-1.03J, "Standards, The Town of Atherton will provide the four (4) posts to be used in this project. The Contractor will be responsible for transporƟng the signal posts from the Town maintenance yard to the site and installing them per RRFB system direcƟons.
The sign mounƟng hardware must be installed at the locaƟons shown on the plans.
1.10 CONDUIT
Conduit shall conform to the provisions of SecƟon 86-1.02B, "Conduit and Accessories," of the Standard SpecificaƟons and these special provisions.
1.11 PULL BOXES
Pull boxes shall conform to the provisions of SecƟon 86-1.01C(2), "Pull Boxes," of the Standard SpecificaƟons and these special provisions.
8 1.12 CONDUCTORS AND WIRING
Conductors, conductor cables and wiring shall conform to the provisions of SecƟon 86-1.02F, “Conductors and Cables,” of the Standard SpecificaƟons and these special provisions.
1.13 RECTANGULAR RAPID FLASHING BEACON (RRFB) SYSTEM
The RRFB System shall be manufactured by TAPCO Safe Travels or approved equal.
1.14 BONDING AND GROUNDING
Bonding and grounding shall conform to the provisions of SecƟon 86-1.02F(1)(c)(ii), "Bonding Jumpers and Grounding Conductors," of the Standard SpecificaƟons and these special provisions.
1.17 PEDESTRIAN PUSH BUTTONS
Pedestrian push buƩons shall conform to the provisions in RRFB specificaƟons.
1.21 WARRANTIES, GUARANTEES AND INSTRUCTION SHEETS
Prior to acceptance of the project, manufacturers’ warranƟes and guaranƟes furnished for materials used in the work, and instrucƟon sheets and parts lists supplied with materials, shall be delivered by the Contractor to the Engineer.
1.22 PAYMENT
Traffic signal and lighƟng systems shall be measured and paid for as one complete installed system in operable condiƟon including foundaƟons, poles, mast arms, signals (traffic and pedestrian), luminaries, wiring, detector loops, cabinets, controller and associated equipment, complete in place.
The contract price paid for RRFB system, supplemental signs and pavement delineaƟon shall include full compensaƟon for furnishing all labor, material, tools, equipment and incidentals, traffic control, and for doing all the work of removing and salvaging exisƟng signal equipment and installing equipment and materials in place as shown on the plans and as directed by the Engineer, including all acƟviƟes necessary for a funcƟonal operaƟon as determined by the Engineer, and no addiƟonal compensaƟon will be allowed therefor.
10 2. PAVEMENT DELINEATION AND SIGNS
2.01 GENERAL
A. DescripƟon: Pavement delineaƟon items shall include all traffic striping, words, symbols, paint removal as required, and removal and installaƟon of reflecƟve pavement markers.
Included also is any necessary removal, temporary delineaƟon, layout, traffic control, and signage modificaƟons. It may be necessary to phase the construcƟon of the striping in the interest of public safety.
B. Materials: Materials shall be in conformance with the Standard SpecificaƟons SecƟon 84- 2,
“Traffic Stripes and Pavement Markings,” for traffic stripes and SecƟon 81-3, “Pavement Markers,” for pavement markers. Signs shall be in conformance with the Standard SpecificaƟons SecƟon 82, “Signs and Markers.”
C. Method of ConstrucƟon: ConstrucƟon and installaƟon shall be per SecƟon 84-2, “Traffic Stripes and Pavement Markings,” SecƟon 81-3, “Pavement Markers,” SecƟon 82-2, “Sign Panels,” and SecƟon 82-3, “Roadside Signs,” of the Standard SpecificaƟons. Removal of exisƟng faciliƟes shall be per SecƟon 15, “ExisƟng FaciliƟes,” SecƟon 84-9.03B, “Remove Traffic Stripes and Pavement Markings,” SecƟon 81-8.03B, “Remove Pavement Markers,” and SecƟon 82-9, “ExisƟng Roadside Signs and Markers,” of the Standard SpecificaƟons.
2.02 ORDER OF WORK
AƩenƟon is directed to "Maintaining Traffic" of these special provisions.
A minimum of one lane of traffic shall be kept open in each direcƟon for public traffic at all Ɵmes during construcƟon. LeŌ turn lanes can be used as through lanes if necessary.
Before lane closure will take place, warning signs for road closure shall be installed at road intersecƟons idenƟfied elsewhere in these special provisions, with the specific locaƟons determined by the Engineer. CoordinaƟon with the Town Engineer is mandatory at least 72 hours in advance of all road closures.
The installaƟon of temporary railings shall be complete at each required locaƟon before exisƟng faciliƟes are disturbed or before excavaƟon or other work is begun which would create a hazard at the locaƟon. Temporary railings shall not be removed unƟl such hazards no longer exist and unƟl such removal is approved by the Engineer.
Erosion control measures shall be fully installed at all Ɵmes. 11 2.03 PUBLIC SAFETY
The Contractor shall provide for the safety of traffic and the public in accordance with the provisions of SecƟon 7-1.04, "Public Safety," of the Standard SpecificaƟons and these special provisions.
Special aƩenƟon is directed to the following direcƟve in SecƟon 7-1.04, "Public Safety," of the Standard SpecificaƟons;
“Whenever the Contractor’s operaƟons create a condiƟon hazardous to traffic or to the public, the Contractor shall, at the Contractor’s expense and without cost to the Town, furnish, erect and maintain those fences, temporary railing (Type K), barricades, lights, signs and other devices and take such other protecƟve measures that are necessary to prevent accidents or damage or injury to the public.”
The Contractor shall install temporary railing (Type K) between any lanes carrying public traffic and any excavaƟon, obstacle, or storage area when the following condiƟons exist:
1) ExcavaƟons: Any excavaƟon the near edge of which is 12 feet or less from the edge of the travel lane, except:
a) ExcavaƟons covered with sheet steel or concrete covers of adequate thickness to prevent accidental entry by traffic or the public.
b) ExcavaƟons less than 12 inches deep.
c) Trenches less than 12 inches wide for irrigaƟon pipe or electrical conduit or excavaƟons less than 12 inches in diameter.
d) ExcavaƟons parallel to the lane for the purpose of pavement widening or reconstrucƟon.
e) ExcavaƟon in side slopes, where the slope is steeper than 4:1. f) ExcavaƟon protected by exisƟng barrier or railing.
2) Temporarily Unprotected Permanent Obstacles: Whenever the work includes the installaƟon of a fixed obstacle together with a protecƟve system, such as a sign structure together with a protecƟve railing, and the Contractor elects to install the obstacle prior to installing the protecƟve system; or whenever the Contractor, for its convenience and with permission of the Engineer, removes a porƟon of an exisƟng protecƟve railing at an obstacle and does not replace such railing complete in place during the same day.
12 3) Storage Areas: Whenever material or equipment is stored within 12 feet of the lane and such storage is not otherwise prohibited by the special provisions.
The approach end of temporary railing (Type K), installed in accordance with the requirements in this secƟon "Public Safety" and in SecƟon 7-1.04 "Public Safety'" of the Standard SpecificaƟons shall be offset a minimum of 15 feet from the edge of the traffic lanes or not more than 1 foot transversely to 10 feet longitudinally with respect to the edge or the traffic lane. If the 15 feet minimum offset cannot be achieved, the temporary railing shall be installed on the 10 feet to 1 foot minimum skew to obtain the maximum available offset between the approach end of the railing and the edge of the traffic lane, and an array of temporary crash cushion modules shall be installed at the approach end of the temporary railing.
Temporary railing (Type K) shall conform to the provisions in SecƟon 12-3.20, "Type K Temporary Railing,” of the Standard SpecificaƟons.
Temporary crash cushion modules shall conform to the provisions in SecƟon 12-3.22, "Temporary Crash Cushion Modules," of the Standard SpecificaƟons.
Except for installing, maintaining and removing traffic control devices, whenever work is performed or equipment is operated in the following work areas the Contractor shall close the adjacent traffic lane unless otherwise provided in the special provisions:
APPROACH SPEED OF PUBLIC TRAFFIC
(POSTED LIMIT, MILES PER HOUR) WORK AREAS
OVER 45 MPH
WITHIN 6 FEET OF A TRAFFIC LANE BUT
NOT ON A TRAFFIC LANE
35 TO 45 MPH
WITHIN 3 FEET OF A TRAFFIC LANE BUT
NOT ON A TRAFFIC LANE
The lane closure provisions of this secƟon shall not apply if the work area is protected by permanent or temporary railing or barrier.
When traffic cones or delineators are used to delineate a temporary edge of traffic lane, the line of cones or delineators shall be considered to be the edge of traffic lane, however, the Contractor shall not reduce the width of an exisƟng lane to less than 10 feet without wriƩen approval from the Engineer.
When work is not in progress on a trench or other excavaƟon that required closure of an adjacent lane, the traffic cones or portable delineators used for the lane closure shall be 13 placed off of and adjacent to the edge of the traveled way. The spacing of the cones or delineators shall be not more than the spacing used for the lane closure.
2.04 WATER POLLUTION CONTROL
Water polluƟon control work shall conform to the provisions in SecƟon 13, “Water PolluƟon Control,” and more specifically SecƟons 13-2, “Water PolluƟon Control Program,” and 13-3, “Storm Water PolluƟon PrevenƟon Plan,” of the Standard SpecificaƟons and these Special Provisions.
The Contractor will be responsible for preparing the adequate WPCP or SWPPP and submiƫng it to the Town of Atherton for review and approval prior to the implementaƟon of the water polluƟon control program.
The contract lump sum price paid for bid item “Water PolluƟon Control” shall include full compensaƟon for furnishing all labor, materials, tools, equipment, and incidentals for doing all the work involved in developing, preparing, submiƫng, revising, and amending the WPCP and/or SWPPP; installing, construcƟng, removing, and disposing of water polluƟon control pracƟces, including non-storm water management, waste management, and water polluƟon control pracƟces as stated in the Standard SpecificaƟons, and no addiƟonal compensaƟon will be made therefor
2.05 CLEARING AND GRUBBING
Clearing and grubbing shall conform to the provisions of SecƟon 17-2, "Clearing and Grubbing," of the Standard SpecificaƟons and these special provisions.
VegetaƟon shall be cleared and grubbed only within the excavaƟon lines. All exisƟng vegetaƟon outside the areas to be cleared and grubbed shall be protected from injury or damage resulƟng from the Contractor's operaƟons. Any damage to exisƟng landscaping outside the area to be cleared and grubbed shall be replaced in kind. Any damage to exisƟng irrigaƟon systems shall be repaired at Contractor's expense.
All removed vegetaƟon, trees, stumps and slash shall become the property of the Contractor and shall be removed and disposed of at the Contractor’s expense. The cleared areas shall be free of slash and debris and the ground surface regraded to a smooth surface and treated with erosion control measures per these special provisions.
Payment for clearing and grubbing work shall be paid for as a lump sum, and shall include all clearing, grubbing, grading, removal of soil to accommodate the shared use path improvements, and general site management and cleaning work. 14 2.06 EXISTING FACILITIES
The work performed in connecƟon with various exisƟng highway faciliƟes shall conform to the provisions of SecƟon 15, "ExisƟng FaciliƟes," of the Standard SpecificaƟons and these special provisions.
ExisƟng traffic control faciliƟes shall be salvaged, removed or relocated as directed by the Engineer.
2.07 MAINTAINING TRAFFIC
AƩenƟon is directed to SecƟons 7-1.03, "Public Convenience," 7-1.04, "Public Safety," and 12-3.04, "Portable Delineators," of the Standard SpecificaƟons, the 2014 California Manual on Uniform Traffic Controls Devices, and these special provisions.
Personal vehicles of the Contractor's employees shall not be parked on the traveled way at any Ɵme, including any secƟon closed to public traffic.
The Contractor shall noƟfy local authoriƟes of the intended date to begin work at least 5 days before work is begun. The Contractor shall cooperate with local authoriƟes relaƟve to handling traffic through the area and shall make arrangements relaƟve to keeping the working area clear of parked vehicles.
The provisions in this secƟon may be modified or altered if, in the opinion of the Engineer, public traffic will be beƩer served and work expedited. Said modificaƟons or alteraƟons shall not be adopted unƟl approved in wriƟng by the Engineer.
2.08 CONSTRUCTION AREA SIGNS
ConstrucƟon Area Signs shall be furnished, installed, maintained, and removed when no longer required in accordance with the provisions of SecƟon 12, "Temporary Traffic Control," of the Standard SpecificaƟons and these Special Provisions.
2.10 SIGNING
Permanent roadside signs shall be removed, salvaged, furnished, and installed by the Contractor, as shown on the project plans. The Contractor shall replace any permanent signs accidentally damaged as a result of the Contractor’s acƟviƟes.
15 Removal of street name posts shall include removal of enƟre post, including embedment porƟon and foundaƟon (if applicable). The Contractor shall then restore the finish grade to be smooth and flush with the surrounding surface.
Roadside Signs and Sign Panels shall be furnished and installed at the locaƟons shown on the plans and in conformance with the provisions in SecƟon 82, "Signs and Markers," of the Standard SpecificaƟons and these special provisions.
Sign sheeƟng shall comply with SecƟons 82-2.02B, “Aluminum SheeƟng,” 82-2.02C, “RetroreflecƟve SheeƟng,” and 82-2.02E, “Single-Sheet Aluminum Panels,” of the Standard SpecificaƟons. Sign colors and film shall comply with SecƟon 82-2.02D, “Process Colors and Film,” of the Standard SpecificaƟons.
Signs shall be fabricated and furnished in accordance with details shown on the plans, the Traffic Sign SpecificaƟons, and these special provisions.
Traffic Sign SpecificaƟons for California sign codes are available for review at:
hƩp://www.dot.ca.gov/hq/traffops/signtech/signdel/specs.htm
Traffic Sign SpecificaƟons for signs referenced with Federal MUTCD sign codes can be found in Standard Highway Signs Book, administered by the Federal Highway AdministraƟon, which is available for review at:
hƩp://mutcd.Ĭwa.dot.gov/ser-shs_millennium.htm
InformaƟon on cross referencing California sign codes with the Federal MUTCD sign codes is available at:
hƩp://www.dot.ca.gov/hq/traffops/signtech/signdel/specs.htm
Signs shall be free from blemishes that may affect the serviceability and detract from the general sign color and appearance when viewing during dayƟme and nighƫme from a distance of 25 feet. The face of each finished sign shall be uniform, flat, smooth, and free of defects, scratches, wrinkles, gel, hard spots, streaks, extrusion marks, and air bubbles. The front, back, and edges of the sign panels shall be free of router chaƩer marks, burns, sharp edges, loose rivets, delaminated skins, excessive adhesive over spray and aluminum marks.
The Contractor shall assume the costs and responsibiliƟes resulƟng from the use of patented materials, equipment, devices, and processes for the Contractor's work.
16 The Contractor shall furnish the Engineer CerƟficates of Compliance for sign manufacturing in conformance with SecƟon 82-2.01C, "SubmiƩals," of the Standard SpecificaƟons.
Sign mounƟng hardware must be installed at locaƟons shown.
2.11 OBSTRUCTIONS
AƩenƟon is directed to SecƟon 5-1.36D “Nonhighway FaciliƟes” and SecƟon 15, “ExisƟng FaciliƟes,” of the Standard SpecificaƟons and these special provisions.
The Contractor shall noƟfy the Engineer and the appropriate regional noƟficaƟon center for operators of subsurface installaƟons at least 2 business days, but not more than 14 days, prior to performing any excavaƟon or other work close to any underground pipeline, conduit, duct, wire or other structure. Regional noƟficaƟon centers include but are not limited to the following:
NoƟficaƟon Center Telephone
Number
Underground Service Alert-Northern
California (USA)
1-800-642-2444
1-800-227-2600
Underground Service Alert-Southern
California (USA)
1-800-422-4133
1-800-227-2600
It is anƟcipated that some or all of the uƟlity and other non-highway faciliƟes both below and above ground will be rearranged during construcƟon operaƟons.
If such uƟlity or other non-highway faciliƟes are not located on the plans in both alignment and elevaƟon, no work shall be performed in the vicinity of said uƟlity or other non-highway faciliƟes unƟl the owner, or a designated representaƟve, has located the facility by potholing, probing, or other means that will locate and idenƟfy the facility.
The Contractor shall cooperate with the affected uƟlity companies to coordinate work with the re-rouƟng of uƟliƟes.
2.12 TRAFFIC CONTROL SYSTEM
The traffic control system shall consist of closing traffic lanes in accordance with the provisions of SecƟon 12, "Temporary Traffic Control," of the Standard SpecificaƟons, the provisions 17 under "Maintaining Traffic" elsewhere in these special provisions, and these special provisions.
Signs for traffic control system shall conform to the provisions under "ConstrucƟon Area Signs" elsewhere in these special provisions. Contractor shall move or place temporary road signs necessary to keep at least one lane of traffic open in each direcƟon during construcƟon.
The provisions of this secƟon do not relieve the Contractor from the responsibility to provide such addiƟonal devices or take such measures as may be necessary to comply with the provisions of SecƟon 7-1.04, "Public Safety," of the Standard SpecificaƟons.
If any component in the traffic control system is damaged, displaced, or ceases to operate or funcƟon as specified, from any cause, during the progress of the work, the Contractor shall immediately repair said component to its original condiƟon or replace said component and shall restore the component to its original locaƟon.
When lane closures are made for work periods only, at the end of each work period, all components of the traffic control system, except portable delineators placed along open trenches or excavaƟon adjacent to the traveled way, shall be removed from the traveled way, shoulder and auxiliary lanes. If the Contractor so elects, said components may be stored at selected central locaƟons, approved by the Engineer, within the limits of the highway right of way. Upon compleƟon of the work requiring lane closure, all components of the traffic control system shall be removed from the site of the work and shall become the property of the Contractor.
At no Ɵme shall the roadway be closed to traffic, unless approved by the Town. Lane restricƟons shall not commence before 9 a.m. and shall cease at 4 p.m. No work that interferes with public traffic shall be done outside these hours except for work required under SecƟons 7-1.03 "Public Convenience," and SecƟon 7-1.04 "Public Safety," of the Standard SpecificaƟons. When work is not acƟvely in progress the full width of the traveled way shall be open for public traffic. Minor deviaƟons from the requirements of this secƟon concerning hours of work may be permiƩed upon approval by the Town Engineer.
2.13 REMOVE PAVEMENT MARKER
ExisƟng pavement markers, including underlying adhesive, when no longer required for traffic lane delineaƟon as determined by the Engineer, shall be removed and disposed of. The removal of exisƟng pavement markers shall conform to SecƟon 81-8.03B, “Remove Pavement Markers,” of the Standard SpecificaƟons.
18 2.14 REMOVE TRAFFIC STRIPE AND PAVEMENT MARKING
Traffic stripe and pavement marking shall be removed at the locaƟons shown on the plans and as directed by the Engineer. The removal of exisƟng traffic stripes and pavement markings shall conform to SecƟon 84-9.03B, “Remove Traffic Stripes and Pavement Markings,” of the Standard SpecificaƟons.
AƩenƟon is directed to SecƟon 13-4, “Job Site Management,” of the Standard SpecificaƟons for the necessary water polluƟon control measures.
2.15 REMOVE CONCRETE
Concrete, where shown on the plans to be removed, shall be removed.
The pay quanƟƟes of concrete to be removed will be measured by the cubic yard, or by the lineal foot if removing curb / curb & guƩer, measured before and during removal operaƟons.
Concrete removed shall be disposed of outside the highway right of way in conformance with the provisions in SecƟon 5-1.20B(4), "Contractor-Property Owner Agreement,” of the Standard SpecificaƟons.
2.16 TREE REMOVAL
Removal of trees shall be at the locaƟons shown on the plans and as directed by the Engineer.
All exisƟng trees shall be protected in place, unless specifically noted on the project plans to be removed or trimmed. The removal of exisƟng trees shall conform to SecƟon 16-1.03C, “Grubbing,” of the Standard SpecificaƟons. The Contractor shall be responsible for disposal of any tree removal or trimming.
AƩenƟon is directed to SecƟon 2.05, “Clearing and Grubbing,” of these Special Provisions.
2.17 THERMOPLASTIC AND PAINT TRAFFIC STRIPES AND PAVEMENT MARKINGS
ThermoplasƟc traffic striping and pavement markings shall be applied on pavements at the locaƟons shown on the Plans, as directed by the Engineer, and as specified in these special provisions. Traffic striping and pavement message markings shall conform to the standards, dimensions and details as specified in the Caltrans Standard Plans, the 2014 California Manual on Uniform Traffic Control Devices (MUTCD), and SecƟon 84-2, “Traffic Stripes And Pavement Markings”, of the Standard SpecificaƟons.
ThermoplasƟc traffic stripes and pavement markings shall be installed by the extrusion method only.
19 LocaƟon of traffic stripes and pavement markers shall be as directed by the Engineer.
ThermoplasƟc traffic stripes and pavement markings are to be applied as soon as pracƟcal aŌer paving. All new AC dikes shall be painted with two coats of yellow water-borne paint along the top and face of the AC dike.
ThermoplasƟc traffic stripes will be measured by the lineal foot along the line of the traffic stripes. ThermoplasƟc pavement markings will be measured by the square foot for the actual area covered, as shown in the Standard Plans.
## END ##
INTERSECTION IMPROVEMENTS
ALAMEDA DE LAS PULGAS AT STOCKBRIDGE AVENUE
Interwest Consulting Group
INTERWEST
A SAFEbuilt COMPANY
SIGN INDEX:
R1-5 (36" x 36") R1-6 (12" x 36")
W11-2 (36" x 36")
W16-7P (24" x 12")
W16-9P (24" x 12")
YIELD LINE DETAIL
DIRECTION OF TRAVEL
BIKE LANE
3'
1' 2'
1.5'
0.5' 1'
R10-25 (9" x 12")
COVER AND DETAILS
NTS
DIRECTION OF TRAVEL
VEHICLE LANE
LADDER CROSSWALK DETAIL
NTS
10'
1'
1'
3' 2'
TOWN OF ATHERTON
INTERSECTION IMPROVEMENTS
AT
ALAMEDA DE LAS PULGAS AND STOCKBRIDGE AVENUE
SHEET INDEX:
SHEET 1 COVER AND DETAILS
SHEET 2 SIGNING AND STRIPING PLANS
SHEET 3 RRFB DETAILS
DETAIL B
DETAIL A
GREEN PAVEMENT MARKING DETAIL
DIRECTION OF TRAVEL
BIKE LANE
NTS
DETAIL F
DIRECTION OF TRAVEL
VEHICLE LANE
4'
TYP.
VARIES
8'
TYP.
2 25 LF
SIDEWALK DRIVEWAY DRIVEWAY DRIVEWAY
DRIVEWAY DRIVEWAY
DRIVEWAY
DRIVEWAY
SIDEWALK
WALK PATH
WALK PATH
SIDEWALK
SIDEWALK
TOWN OF WOODSIDE
TOWN OF ATHERTON
UNINCORPORATED SAN MATEO COUNTY
TOWN OF ATHERTON
TOWN OF WOODSIDE
UNINCORPORATED SAN MATEO COUNTY
160 SF
1 10
13 6
14 4
8 5
11 12 9
1 5
6 7
15 9
16 FROM
TO
INTERSECTION IMPROVEMENTS
ALAMEDA DE LAS PULGAS AT STOCKBRIDGE AVENUE
Interwest Consulting Group
INTERWEST
A SAFEbuilt COMPANY
N
1 PROJECT NOTES:
REMOVE AND SALVAGE REFLECTIVE CROSSWALK FLAGS AND
STORAGE BIN.
REMOVE AND SALVAGE POST.
NOT USED.
INSTALL NEW WHITE THERMOPLASTIC LADDER CROSSWALK PER
2023 CALTRANS STANDARD PLAN A24F. SEE DETAIL A ON SHEET 1.
CONTINENTAL LINES TO BE PARALLEL TO TRAFFIC FLOW.
INSTALL NEW WHITE THERMOPLASTIC YIELD LINE FOR VEHICLE
LANE PER 2023 CALTRANS STANDARD PLAN A24G. SEE DETAIL B ON SHEET 1.
INSTALL NEW WHITE THERMOPLASTIC YIELD LINE FOR BIKE LANE PER 2014 CA MUTCD FIGURE 3B-16 (a) MINIMUM DIMENSIONS. SEE DETAIL B ON SHEET 1.
INSTALL NEW 6" WHITE THERMOPLASTC STRIPING DETAIL 39A
PER 2023 CALTRANS STANDARD PLAN A20D.
INSTALL NEW WHITE THERMOPLASTIC TYPE IV(L) ARROW
PAVEMENT MARKING PER 2023 CALTRANS STANDARD PLAN A24A.
INSTALL NEW R1-5 (36" x 36") SIGN AND POST.
INSTALL NEW TAPCO RRFB SYSTEM AND POST. SEE DETAIL C ON SHEET 3 FOR MORE DETAILS.
INSTALL NEW TAPCO RRFB SYSTEM AND POST. SEE DETAIL D ON SHEET 3 FOR MORE DETAILS.
INSTALL NEW W11-2 (36" x 36") SIGN ABOVE NEW W16-9P (24" x 12") SIGN AND POST.
INSTALL NEW ADVANCED TAPCO RRFB SYSTEM AND POST. SEE
DETAIL E ON SHEET 3 FOR MORE DETAILS.
INSTALL NEW R1-6 (12" x 36") DOUBLE-SIDED SIGN AND FIXED SPRING-BACK BASE AT THE CROSSWALK ON THE CENTERLINE.
INSTALL GREEN PAVEMENT MARKING AT EXISTING AND
PROPOSED DETAIL 39A STRIPING AS SHOWN. SEE DETAIL F ON
SHEET 1.
RELOCATE EXISTING R81(CA) SIGN AND POST AS SHOWN.
LEGEND:
EXISTING FIRE HYDRANT
EXISTING STREET LIGHT POLE
EXISTING PAVEMENT MARKING
EXISTING SIGN AND POST
PROPOSED PAVEMENT MARKING
PROPOSED SIGN AND POST
PROPOSED RECTANGULAR RAPID
FLASHING BEACON SYSTEM
3 ABBREVIATIONS:
EX. EXISTING
LF LINEAR FEET
MOD. MODIFIED
NTS NOT TO SCALE
SF SQUARE FEET
SNS STREET NAME SIGN
2 SIGNING AND STRIPING PLAN
4 5
6 8
11 12
13 CONSTRUCTION NOTES:
1. ALL POST LOCATIONS TO BE CONFIRMED AFTER
UNDERGROUND SERVICE ALERTS AND ENGINEER
APPROVAL. PUSHBUTTON LOCATION PLACEMENT PER
CAMUTCD SECTION 4E.08 CRITERIA ALONG WITH MEETING
ADA REQUIREMENTS. SOLAR PANEL LOCATIONS TO OBTAIN
MAXIMUM EFFICIENCY.
2. ALL SIGNS SHALL BE DIAMOND GRADE DG3.
3. ALL STRIPING AND PAVEMENT MARKINGS TO BE
THERMOPLASTIC AND PER 2023 CALTRANS STANDARD
PLANS AND SPECIFICATIONS.
4. REMOVE ALL CONFLICTING EXISTING STRIPING AND
PAVEMENT MARKINGS AND FOG SEAL PRIOR TO NEW
STRIPING AND PAVEMENT MARKING INSTALLATION.
5. CONTRACTOR SHALL LAYOUT PROPOSED STRIPING FOR
ENGINEER APPROVAL PRIOR TO FINAL STRIPING.
6. TAPCO MANUFACTURE'S REPRESENTATIVE TO BE ON-SITE
DURING THE RRFB SYSTEM INSTALLATION.
7. DO NOT STRIPE OR ADD PAVEMENT MARKINGS IN GUTTER.
8. CONTRACTOR SHALL RETURN THE SALVAGED REFLECTIVE
CROSSWALK FLAGS, STORAGE BINS, AND POST TO THE
OWNER AT 305 STOCKBRIDGE AVENUE, ALAMEDA, CA 94027.
PROJECT NOTES (CONTINUED):
7 9
10 14
15 16
INTERSECTION IMPROVEMENTS
ALAMEDA DE LAS PULGAS AT STOCKBRIDGE AVENUE
Interwest Consulting Group
INTERWEST
A SAFEbuilt COMPANY
42"
84"
MINIMUM
RRFB DETAILS
8"
FACING WESTBOUND FACING EASTBOUND FACING WESTBOUND
TAPCO RRFB SYSTEM DETAIL
NTS
DETAIL C
FACING EASTBOUND
TAPCO RRFB SYSTEM DETAIL
NTS
DETAIL D
ADVANCED TAPCO RRFB SYSTEM DETAIL
NTS
DETAIL E
VEHICLE TRAFFIC VEHICLE TRAFFIC VEHICLE TRAFFIC VEHICLE TRAFFIC
FACING WESTBOUND
VEHICLE TRAFFIC
84"
MINIMUM
8"
156"
MINIMUM
84"
MINIMUM
8"
156"
MINIMUM
84"
MINIMUM
8"
156"
MINIMUM
156"
MINIMUM
42"
84"
MINIMUM
8"
156"
MINIMUM