City Council Agenda Report
TO: Mayor Clauzel and Members of the City Council
FROM: Ken Irwin, City Manager
BY: Fernando Ulloa, City Engineer
MEETING DATE: March 5, 2024
ITEM NO: 6.8
SUBJECT: Approve the proposal from NCM Engineering, Corp for the I-5/Sperry Avenue Traffic Interchange: Located between the Westley and Crows Landing Interchanges, authorize staff to enter into a negotiated Consultant Agreement with a not to exceed cost of $1,593,652.45 for the Phase 2 design and authorize the Finance Department to make the necessary budget amendments.
RECOMMENDATION
Motion to Approve the proposal from NCM Engineering, Corp for the I-5/Sperry Avenue Traffic Interchange: Located between the Westley and Crows Landing Interchanges, authorize staff to enter into a negotiated Consultant Agreement with a not to exceed cost of $1,593,652.45 for the Phase 2 design and authorize the Finance Department to make the necessary budget amendments.
BACKGROUND
Interstate 5 (I-5) is a four-lane freeway near the City of Patterson. According to the 2012 traffic counts obtained from the Caltrans website, I-5 carries between 37,000 to 41,000 vehicles per day in the vicinity of Sperry Avenue. For regional travel within western Stanislaus County, I-5 is a major north-south freeway to the west of the City of Patterson limits. I-5 connects to Interstate 580 (I-580), approximately 13 miles to the north of the City of Patterson. I-5 and I-580 provide access to regional employment centers in Pleasanton, San Ramon, and the San Francisco Bay Area. Under Existing Conditions, the interchange of I-5/Sperry Avenue is configured as a tight diamond with a narrow undercrossing for Sperry Avenue and a steep drop in grade next to the northbound on-ramp. All ramps are one lane in width. The existing ramp intersections are stopcontrolled at the off-ramps. The northbound on-ramp operates at a Level Of Service (LOS) ‘F’ during the A.M peak hours and a LOS ‘E’ during the P.M. peak hours. The southbound off- ramp operates at a LOS ‘C’ during the A.M. peak hours and a LOS ‘F’ during the P.M. peak hours.
The project involves converting the I-5 Southbound (SB) and I-5 Northbound (NB) on/off ramps at Sperry Avenue to signal control with split phasing sequence. The geometry proposed involves modifying the I-5 SB ramps intersection to include an exclusive left and a shared left, through and right lane at the southbound off ramp, an exclusive left lane and a shared left and through lane at the westbound approach and two through lanes with a shared right turn lane at the eastbound approach. At the I-5 NB Ramps intersection, the lane geometry modification involved providing a shared left and through lane and two exclusive right turn lanes at the northbound off ramp, two through lanes and an exclusive right turn lane with a right turn channelized island at the westbound approach and a shared left and through lane and exclusive through lane at the eastbound approach.
Sperry Avenue will be modified to a four-lane roadway (east-west bound) requiring the existing 2-lane bridge over the California Aqueduct to be widened to four-lanes by adding an additional lane on either side of the existing bridge. The outer abutments to accommodate the proposed two additional bridge lanes are existing.
ANALYSIS
A Request For Proposals (RFP) for Engineering and Design Services was prepared and advertised.
Two proposals and estimated fees (based on hourly rates) were submitted by the following firms:
NCM Engineering, Corp. $2,569,980
MNS Engineers
Pursuant to the criteria listed in the RFP, the cost proposal for the highest rated consultant was opened and negotiations were completed successfully.
The proposals were reviewed by a Selection Committee consisting of City of Patterson, Stanislaus County, and the Dept. of Transportation (Caltrans). Proposals were rated on:
· Understanding of work to be performed
· Experience with similar types of work
· Quality of staff for work to be done
· Capability of developing innovative or advanced techniques · Familiarity with state and federal procedures
· Financial Responsibility
· Demonstrated Technical Ability
Both proposals were very clear and concise and showed good understanding of the project, while also meeting the requirements set forth in the RFP. The Selection Committee recommends NCM Engineering, Corp. for the design of this project based on the evaluation of their qualifications and experience.
FISCAL IMPACT
Staff negotiated with NCM Engineering, Corp. for a final and agreeable scope of work and fee of $2,569,980. This project was broken-up into two phases; Phase 1 amount of $976,327.55, and Phase 2 amount of $1,593,652.45. Phase 1 was awarded to NCM Engineering, Corp at the July 5, 2022 City Council meeting. Staff recommends awarding the design of Phase 2 to NCM Engineering, Corp.
$1,593,652.45 NCM Engineering, Corp
$159,365.25 10% Contingency
$1,753017.17 Total Phase 2 Project Cost
Current funding for this project is as follows:
$545,459.42 Fund 412 - Streets Impact
$899,047.22 Fund 327 - Gas Tax
$308,510.53 Fund 329 - Measure L
$1,753,017.17 Total Funding
If approved, the budget will be adjusted as shown above.