Contra Costa County, CA

686 public highway bridges

Contra Costa County Bridge Snapshot

According to the Federal Highway Administration's 2024 National Bridge Inventory, Contra Costa County, California contains 686 public highway bridges. Roughly 29.7% are rated “Good,” 26.1% “Fair,” and 5.5% “Poor.” Poor means the lowest applicable deck, superstructure, substructure, or culvert rating is 4 or below on the 0–9 NBI scale. It is a condition category, not a live safety or closure decision.

Responsible agencies inspect covered bridges on risk-based intervals under current NBIS rules and submit inventory data to FHWA annually. The list below shows every NBI-tracked bridge in the county. Use the “Sort by” controls to change the ordering, and click any row for its reported inspection date, traffic count, and condition fields.

Source: FHWA National Bridge Inventory. See methodology for full definitions.

686
Total Bridges
29.7%
Good
26.1%
Fair
5.5%
Poor Condition

Condition Distribution

Good
29.7% (204)
Fair
26.1% (179)
Poor
5.5% (38)

All Bridges (686)

NICHOLS RD

Fair

Over: CONTRA COSTA CANAL

0.35 MI S OF PORT CHICAGO, Contra Costa, CA

Built 1945 Load: 23.7 t ADT: 75

INTERSTATE 680

Fair

Over: SAN RAMON CREEK

04-CC-680-R7.43-DNVL, Contra Costa, CA

Built 1964 Load: 24.0 t ADT: 192,200

PINOLE VALLEY RD

Fair

Over: PINOLE CREEK

1.2 MI SE OF I-80, Contra Costa, CA

Built 1966 Load: 24.0 t ADT: 19,900

I80,JACUZZI,PIERCE

Fair

Over: CERRITO CREEK

04-CC-080-0.01-RCH, Contra Costa, CA

Built 1936 Load: 24.3 t ADT: 179,000

STATE ROUTE 4

Fair

Over: BNSF RY

04-CC-004-R9.10-MTZ, Contra Costa, CA

Built 1938 Load: 24.3 t ADT: 62,000

YGNACIO VALLEY RD

Fair

Over: GALINDO CREEK

0.05 MI W ALBERTA WY, Contra Costa, CA

Built 1954 Load: 24.3 t ADT: 19,000

KIRKER PASS RD

Fair

Over: MOUNT DIABLO CREEK

0.2 MI N CLAYTON RD, Contra Costa, CA

Built 1967 Load: 24.3 t ADT: 19,000

VANDERSLICE AVE

Fair

Over: UNNAMED CREEK

0.2 MI N RUDGEAR RD, Contra Costa, CA

Built 1950 Load: 24.3 t ADT: 400

PERADA DR

Fair

Over: PINE CREEK

0.1 MI E CITRUS AVE, Contra Costa, CA

Built 1958 Load: 24.3 t ADT: 1,100

RISDON ROAD

Fair

Over: SDM CHANNEL

0.25 MI SW OAK GROVE, Contra Costa, CA

Built 1970 Load: 24.3 t ADT: 450

CLAUDIA DR

Fair

Over: HOLBROOK CHANNEL

0.1 MI N HOLBROOK, Contra Costa, CA

Built 1970 Load: 24.3 t ADT: 200

HILLCREST AVE

Fair

Over: GILLIPPI GULCH

0.2 MI N OF E 18TH ST, Contra Costa, CA

Built 1958 Load: 24.3 t ADT: 4,000

BOYD RD

Fair

Over: E. FORK GRAYSON CREEK

0.3 MI W CONTRA COSTA BL, Contra Costa, CA

Built 1954 Load: 24.3 t ADT: 7,400

SAN MIGUEL ROAD

Fair

Over: PINE CREEK

0.2 MI NW TREAT BLVD, Contra Costa, CA

Built 1965 Load: 24.3 t ADT: 2,944

TREAT BLVD

Fair

Over: GALINDO CREEK

0.3 MI S CLAYTON RD, Contra Costa, CA

Built 1968 Load: 24.3 t ADT: 28,708

HAWTHORNE DR

Fair

Over: RODEO CREEK

0.04 MI W VAQUEROS AVE, Contra Costa, CA

Built 1959 Load: 24.3 t ADT: 1,237

LA HONDA RD

Fair

Over: SAN PABLO CREEK

0.1 MI N SAN PABLO DAM RD, Contra Costa, CA

Built 1949 Load: 24.3 t ADT: 552

DAINTY ROAD

Fair

Over: MARSH CREEK

800' E MINNESOTA AVE, Contra Costa, CA

Built 1964 Load: 24.3 t ADT: 4,200

TUNBRIDGE RD

Fair

Over: SYCAMORE CREEK

AT SYCAMORE VALLEY RD, Contra Costa, CA

Built 1970 Load: 24.3 t ADT: 400

COTTONWOOD DRIVE

Fair

Over: GRAYSON CREEK

0.1 MI W CONTRA COSTA BL, Contra Costa, CA

Built 1970 Load: 24.3 t ADT: 2,000

PITTSB-ANTIOCH HWY

Fair

Over: KIRKER CREEK

0.6 MI E OF HARBOR ST, Contra Costa, CA

Built 1950 Load: 24.3 t ADT: 10,610

NEWELL AVE

Fair

Over: TICE CREEK

200 FT W. OF S. MAIN ST, Contra Costa, CA

Built 1962 Load: 24.3 t ADT: 17,100

WARD ST

Fair

Over: ARROYO DEL HAMBRE

AT ESTUDILLO ST, Contra Costa, CA

Built 1958 Load: 24.9 t ADT: 3,300

WATERFRONT RD

Fair

Over: PACHECO SLOUGH

0.3 MI WEST SOLANO WAY, Contra Costa, CA

Built 1948 Load: 25.3 t ADT: 2,409

BALFOUR RD.

Fair

Over: MARSH CREEK

1.1 MI WEST OF SR 4, Contra Costa, CA

Built 1996 Load: 25.3 t ADT: 10,600

BALFOUR RD.

Fair

Over: MARSH CREEK

1.1 MI WEST OF SR 4, Contra Costa, CA

Built 1996 Load: 25.6 t ADT: 10,600

RELIEZ STATION RD

Fair

Over: LAS TRAMPAS CREEK

0.1 MI N OLYMPIC BLVD, Contra Costa, CA

Built 1937 Load: 25.6 t ADT: 900

CLIFTON COURT ROAD

Fair

Over: ITALIAN SLOUGH

0.5 MI E BYRON HIGHWAY, Contra Costa, CA

Built 1950 Load: 26.6 t ADT: 100

STATE ROUTE 4

Fair

Over: KELLOGG CREEK

04-CC-004-45.56, Contra Costa, CA

Built 1990 Load: 26.9 t ADT: 18,900

APPIAN WAY

Fair

Over: SAN PABLO CREEK

AT SAN PABLO DAM ROAD, Contra Costa, CA

Built 1938 Load: 27.2 t ADT: 11,492

CANAL RD

Fair

Over: CONTRA COSTA CANAL

0.2 MI E BAILEY RD, Contra Costa, CA

Built 1969 Load: 27.9 t ADT: 10,900

CREEKSIDE DR

Fair

Over: SAN RAMON CREEK

0.4 MI E OF S MAIN ST, Contra Costa, CA

Built 1959 Load: 28.8 t ADT: 2,100

PINOLE VALLEY RD

Fair

Over: PINOLE CREEK

0.3 MI SOUTH OF I-80, Contra Costa, CA

Built 1936 Load: 28.8 t ADT: 14,000

PACHECO BLVD

Fair

Over: GRAYSON CREEK

0.2 MI N CENTER AVE, Contra Costa, CA

Built 1975 Load: 29.2 t ADT: 17,285

I 580 EB

Fair

Over: SCOFIELD AVENUE

04-CC-580-5.83-RCH, Contra Costa, CA

Built 1956 Load: 29.5 t ADT: 34,000

CANAL RD

Fair

Over: CONTRA COSTA CANAL

0.15 MI NW BAILEY RD, Contra Costa, CA

Built 1969 Load: 29.5 t ADT: 3,010

TREAT BLVD

Fair

Over: WALNUT CREEK

0.5 MI EAST OF OAK RD, Contra Costa, CA

Built 1970 Load: 29.5 t ADT: 36,800

BROWN ST

Fair

Over: ARROYO DEL HAMBRE

0.1 MI W PINE ST, Contra Costa, CA

Built 1929 Load: 29.5 t ADT: 3,000

ELINORA DRIVE

Fair

Over: GRAYSON CREEK

LESLIE DRIVE, Contra Costa, CA

Built 1958 Load: 30.1 t ADT: 3,400

PLEASANT HILL RD

Fair

Over: LAS TRAMPAS CREEK

AT OLYMPIC BLVD, Contra Costa, CA

Built 1967 Load: 30.5 t ADT: 15,780

RED WILLOW RD

Fair

Over: WEST BRANCH ALAMO CREEK

0.1 MI SE DOUGHERTY RD, Contra Costa, CA

Built 1990 Load: 30.8 t ADT: 400

NORTH GATE ROAD

Fair

Over: PINE CREEK

AT CASTLE ROCK ROAD, Contra Costa, CA

Built 1970 Load: 31.1 t ADT: 3,500

G ST

Fair

Over: UP RR

0.4 MI N/O SR4 INTCH, Contra Costa, CA

Built 1967 Load: 31.4 t ADT: 6,100

E4-N160 CONNECTOR

Fair

Over: UP RR

04-CC-160-0.43, Contra Costa, CA

Built 1971 Load: 31.8 t ADT: 11,950

STATE ROUTE 4

Fair

Over: KENDALL CREEK OVERFLOW

04-CC-004-45.84, Contra Costa, CA

Built 1990 Load: 32.4 t ADT: 18,900

STATE ROUTE 4 WB

Fair

Over: RODEO CREEK

04-CC-004-R1.90L, Contra Costa, CA

Built 2001 Load: 32.4 t ADT: 20,250

INTERSTATE 680

Fair

Over: SAN RAMON CREEK

04-CC-680-R4.46-DNVL, Contra Costa, CA

Built 1966 Load: 32.4 t ADT: 176,400

INTERSTATE 80

Fair

Over: RICHMOND GREENWAY TRAIL

04-CC-080-2.53-RCH, Contra Costa, CA

Built 1954 Load: 32.4 t ADT: 179,000

STATE ROUTE 580

Fair

Over: RUST DRAIN

04-CC-580-0.72-RCH, Contra Costa, CA

Built 1991 Load: 32.4 t ADT: 84,500

I 580

Fair

Over: MARINE STREET

04-CC-580-R5.43-RCH, Contra Costa, CA

Built 1990 Load: 32.4 t ADT: 68,000

Read our methodology - how this data is sourced, computed, and verified.

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Data sourced from official public datasets. See our methodology for details. Retrieved and formatted by PlainBridges

Every figure on PlainBridge is rendered directly from federal source data, no number is typed in by an editor. This page draws directly on federal source data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.