COLLINS ISLAND BRIDGE
REPLACEMENT
RECOMMENDATIONS
ADOPT MITIGATED NEGATIVE DECLARATION
AND
PROCEED WITH FINAL BRIDGE DESIGN
Collins Island is private.
The existing bridge was built in
1953 as a private improvement
project.
The City took over ownership of
the bridge in 1959.
I,
CITY OF
NEWPORT BEACH
.,A
Tw JQ r�
ns N•
I
r9
rr'
T�
13 5 r OP4
rf
�lr
,'-LJKL1H1 N �t•ti .. 4
w r, 7
Rp wM1�pM
-
: i r
YfSIVY F,i�ONT ,?; i i y ��-
�` n Y
L 0
r �
2 "NOW Ab�
It
I,
CITY OF
NEWPORT BEACH
I,
CITY OF
NEWPORT BEACH
➢ Existing bridge abutments are constructed with concrete sheet piles. ➢ Caltrans inspection evaluated the bridge structure as "minimum tolerable".
➢ Top of bridge coping is Elevation 9.0'.
➢ Seawall at 1 Collins Avenue is at Elevation 10.9'.
➢ Note the open railing on the bridge.
PRUPDSE�SEAWALL
IMPROVEMENTS
ALLEY
{
`` 7 I I Ifr�F[5xlsr. �u�.{u DIM, [ V
tip--- .- � ����--- � IR � F EY[sT. T1I�� — �` ; • __—_____ . � i 11,
{ll PRDPDSEl1 RRIl1GE � � • +
{ APPROACHES r
till l COLLINS IStAfVD STREET, SIDEWALK AnD
1 BALBOA ISLAND
LANDSCAPE IMPROVEMENTS K awe
�yl ,ldgi ETISI- -I• •I+CC_ `T �® i•�LS. RJ'S.. .3 * �' f — ��C �i^ e�TG s— AM 01 or
IK � 1 PJAX nYE
,(�1M9E-p1} .axixa iau.� uxi ® 11*18 T'} a _
1 FUTURE PUMPSIATION
i
PROPOSED Ealu} -- - -
10 �kL -
4. • � 6Q106E : i pEE��ntE
f Er[sr. awEax ja,l }• a [s1�
,\ L*® G � l+ xp xE[m� Ex�sr. r�rex aslx �.�-L� � � • 4 Af. PY
P R OPOSE O S EAWAL L 1
IMPROVEMENTS
➢ Bridge and bridge approaches
➢ Seawall improvements
➢ Street, sidewalk and landscape improvements
➢ Provisions for future stormwater pump station
CITY OF
NEWPORT BEACH
Bridge Elements Proposed Existing
-Bridge Span
31'-0"
207
-Bridge Width
20'-6"
197
-Travel Lane Width
133-3"
127
-Sidewalk Width
4'-6"
4'
-Bridge Deck Elev.
7.52'
7.247
-Side Barrier Top Elev.
11.00'
Open
Railing
I,
CITY OF
NEWPORT BEACH
�I,l
.31-_ 11
IKE PARK
AVENUE
-2" POLfE!�TE:
'J CONCRETE
I OVERLAY
w
J
m
4 0
Proposed Typical Section
Typ
+
Exist COPING, Typ
`
NEW STEEL SHEET PILE
]_ SHEET PILE
Exlst CONCRETE
I
SHEET PILE, Typ
2 19•-2"l OPENING
I
4 _
I
I
Conc BARRIER
TYPE 7325W (MOD) of
,
P
PAR AVENUE
11 N53' •59"W
El- 7.702 .1
—
I
a:=- �161:, Typ Conc BARRIER TYPE 542 (MOD} ACCCMMODA7E SEA LEVEL R15E SHEET PILE, Typ
Exiat TOP NEW Canc COPING, Typ
I` NEW Conc COPING, Typ j( OF DECH 3" CIP DECK
NE- STEEL SHEET PILE PLAN NEW STEEL
ROADWAY
I SHEET PILE ROADWAY _
HIGH TIDE
PILE CAP, Tyq Conc SLA9 WATER
r I
El
ev 7Jf
I
rLOW TIDE
24" CIDH �� / WATER Exist Conc
sssJJl Elegy —2.4i I•r r�
SECANT PILE, Typ ��� — �i-.rl SHEET PILE, Typ
I
I I
I Exi L ,
SHEET PLE, Typ "—I— SHEET SHEET PCEn Typ NEW STEEL
T1 LJ NEW STEEL 179 r 1—Y--- SHEET PILE, Typ
CITY OF SHEET PILE, Typ
NEWPORT BEACH
nn ELEVATION n1*�
COLLINS ISLAND
Top of Seawall Elevation Requirements
1 11 ' SEAWALL_
(TV BB 10r92 V'
R
3 EXIST. SEhMhLL FRCP 15RIDGE
0.5.0 G' v
NEW SEAWALL
Year Structure
Permitted
Adopted Newport Beach
Standard Elevation (feet)
Designfor Adaptability
Elevation (feet) '
NAVD88
VILLW
NAVD86
VLLW
2020
10.7 10.9
13.7 13.9
2021 -2025
10.9 11.1
14.A
14.6 2026-2030
'11.0
11.1 14.6
14.8 2031- 2035
11.0 112
14.8 1 15.0
Saurce: 2= Newport Beach Waterfront project Guidelines T261e N--. 2
83.48' .ER "+.. 2.7 B3.80'
LIMIT OF SE4WFLL OCfi5TRUCTIUN LIMIT CF SEAWALL OONSTFLCTIO'.
FF.11TE(T Ex]ST SExNALL
rU4' SEAULL r TI y l ib.
(TTP r - I HEN SEANALL
Ff; i➢ EXIST. SEAWALL Ip (TYP )
RI'k-1 - — —IQ
�:_. --
it _ FIITI FE 7y
�— I IFS--= FII F �
F J LI I`II 'r-r[a.-
v I7- RiR PCC CURB
R/W III I IEN DRAIN
_Y nl 2 _ ~
�I IL
III II LI+E FCR
r^' � L+':l ,:APE BU", I II —J LJ runlRr•= -
r x y ExI T carcN ea.=.15 I L— _ —_ J p. �r I
➢ Top of new seawall would transition to match existing seawall. ➢ Boardwalk would be raised about 1 foot to match new elevation of roadway approach to bridge.
❑ Staff recommends elevation 10.0' for seawalls adjacent to Boardwalk.
CITY OF
NEWPORT BEACH
BAY ISLAND SEAWALL
i000w I
IC Ni.
I
I,
CITY OF
NEWPORT BEACH
Traffic Management Plan
❑Limiting lane closures to avoid peak hours of traffic. ❑Construction flag persons to direct traffic during heavy equipment use. ❑Establishing dedicated truck routes.
❑Identify proposed mainland parking areas for construction workers.
Construction Noise Mitigation Plan
❑Contractor's Noise Disturbance Coordinatorto investigate complaints. ❑Implement construction noise reduction methods including:
• requiring construction equipment be equipped with noise shielding and muffling devices,
■ shutting off idling equipment,
■ maximizing the distance between construction equipment staging areas and residential areas, and
■ requiring the use of electric air compressors and similar power tools.
10 PROJECT MILESTONES
• Drawings and Specifications Completed
• Coastal Development Permit and Other
Permits Issued
• Advertise Project
• Award Project
• Begin Construction
• Complete Construction
I,
CITY OF
NEWPORT BEACH
DATE
October 2025
March 2026
April 2026
June 2026
September 2026
March 2027
Conceptual Design / Environmental Documents
Final Design /Agency Permitting
Construction (Rough Estimate)
Contingency
Estimated Total Project Cost
I,
CITY OF
NEWPORT BEACH
$ 3705000
$ 7115000
$2, 500, 000
$ 250,000
$3,831,000
• Adopt Resolution No. 2024-79, A Resolution of the City Council of the City of Newport Beach, Adopting Mitigated Negative Declaration No. ND2018-002 for the Collins Island Bridge Replacement (PA2024-0190), pursuant to the California Environmental Quality Act, State CEQA Guidelines and City Council Policy K-3; and • Authorize Michael Baker International to prepare the final construction documents for the Collins Island Bridge Replacement including adjacent new seawalls.
I,
CITY OF
NEWPORT BEACH
/1
CITY OF
NEWPORT BEACH
CITY OF
NEWPORT BEACH
■ New steel sheet pile (green dots) installed
outside the existing concrete sheet pile (purple).
■ New concrete coping (dark green dots) installed
on top of new steel sheet pile to top elevation
10.9 feet (NAVD88 datum).
■ Existing concrete coping ( )range) removed and
sidewalk widened (black dots).
■ A future stem wall can be added to top elevation
14.4 feet.
I,
CITY OF
NEWPORT BEACH
7;1P OF FOTURE STDJ WALL
eve 4.40
I
I I
I I
I I
I I
I I
I I
L--FUTURE Cann 5TEM WALL
I I IF DEEMED NECESSARY
I I TO AGCOMMOOATE SEA
I I LEVEL RISE
I I
I I
I I
I I
I I
TOP aF WALL
pq—t 0, 9Gf
_—NEW Cony
COPING
PROFILE LINE
23•
y.. ,
M M
J
¢ ONE O0.1R5E
Conc SIDEWALK
n
�LICi-IWJG COfJDIJ IT
Exist•Caac BULKHEAD
.r—�
• J . 17 +
SECTION No.2
Eclat fans
SHEET PILE