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)

LINDEMANN RD

Poor

Over: DELTA-MENDOTA CANAL

100 FT S HERDLYN RD, Contra Costa, CA

Built 1950 Load: 10.4 t ADT: 150

FERRY STREET

Poor

Over: ARROYO DEL HAMBRE

AT GREEN ST, Contra Costa, CA

Built 1940 Load: 15.2 t ADT: 3,000

DELTA ROAD

Poor

Over: MARSH CREEK

0.8 MI E OF SH4, Contra Costa, CA

Built 1965 Load: 16.8 t ADT: 4,147

SHELL AVE

Poor

Over: ARROYO DEL HAMBRE

300 FT EST OF ALHAMBRA AV, Contra Costa, CA

Built 1955 Load: 20.4 t ADT: 4,900

BRIONES VALLEY RD

Poor

Over: BRIONES VALLEY CREEK

2.9 MI W DEER VALLEY RD, Contra Costa, CA

Built 2001 Load: 22.0 t ADT: 50

SAN PABLO AVE

Poor

Over: BNSF RY AND AMTRAK

WEST OF CAROL LANE, Contra Costa, CA

Built 1938 Load: 22.4 t ADT: 10,300

MINER RD

Poor

Over: SAN PABLO CREEK

AT CAMINO PABLO, Contra Costa, CA

Built 1931 Load: 22.4 t ADT: 6,368

W580-CENTRAL OFF

Poor

Over: CENTRAL AVE

04-CC-580-0.04-RCH, Contra Costa, CA

Built 1991 Load: 23.7 t ADT: 4,300

DIABLO ROAD

Poor

Over: SAN RAMON CREEK

0.2 MI WEST OF I-680, Contra Costa, CA

Built 1966 Load: 23.7 t ADT: 21,350

ST FRANCIS DR

Poor

Over: GALINDO CREEK

0.1 MI E OAK GROVE RD, Contra Costa, CA

Built 1950 Load: 24.3 t ADT: 450

SECOND AVE SOUTH

Poor

Over: GRAYSON CREEK

JUST W CONTRA COSTA BLVD, Contra Costa, CA

Built 1954 Load: 24.3 t ADT: 3,419

CAMINO SOBRANTE

Poor

Over: SAN PABLO CREEK

75 FT E CAMINO PABLO, Contra Costa, CA

Built 1955 Load: 24.3 t ADT: 2,514

JERSEY ISLAND RD

Poor

Over: DUTCH SLOUGH

1.5 MILES N OF CYPRESS RD, Contra Costa, CA

Built 1949 Load: 24.3 t ADT: 188

NORTH LAKE DRIVE

Poor

Over: LAKE ALHAMBRA

AT EAST 13TH ST, Contra Costa, CA

Built 1961 Load: 24.3 t ADT: 1,500

DEL MONTE DR

Poor

Over: BNSF RY

0.1 MI N SAN PABLO AVE, Contra Costa, CA

Built 1965 Load: 25.3 t ADT: 3,124

INTERSTATE 680

Poor

Over: LAS TRAMPAS CREEK

04-CC-680-13.72-WLC, Contra Costa, CA

Built 1960 Load: 27.2 t ADT: 195,300

INTERSTATE 680

Poor

Over: EL PINTADO ROAD

04-CC-680-R8.75-DNVL, Contra Costa, CA

Built 1964 Load: 27.9 t ADT: 194,300

N680-N242 CONNECTR

Poor

Over: WALNUT CREEK

04-CC-680-R18.70-CND, Contra Costa, CA

Built 1963 Load: 31.1 t ADT: 63,800

INTERSTATE 680

Poor

Over: BLUM ROAD

04-CC-680-21.52, Contra Costa, CA

Built 1962 Load: 31.4 t ADT: 118,000

INTERSTATE 680

Poor

Over: WILLOW PASS ROAD

04-CC-680-19.04-CND, Contra Costa, CA

Built 1962 Load: 32.4 t ADT: 130,000

INTERSTATE 680

Poor

Over: GRAYSON CREEK

04-CC-680-20.89, Contra Costa, CA

Built 1962 Load: 32.4 t ADT: 169,000

EB 4-SB 680 CONN

Poor

Over: GRAYSON CREEK

04-CC-680-20.88, Contra Costa, CA

Built 2005 Load: 32.4 t ADT: 28,700

HERCULES AVE

Poor

Over: BNSF RY

AT SAN PABLO AVE, Contra Costa, CA

Built 1985 Load: 32.4 t ADT: 4,000

RAILROAD AVE

Poor

Over: UP RR,PARKSIDE,RAILROAD

0.1 MI S OF CENTRAL AVE, Contra Costa, CA

Built 1988 Load: 32.4 t ADT: 10,000

CYPRESS ROAD

Poor

Over: MARSH CREEK

0.05 MI EAST OF SR 4, Contra Costa, CA

Built 1964 Load: 33.7 t ADT: 9,415

MARSH CREEK RD

Poor

Over: MARSH CREEK

3 MI E DEER VALLEY ROAD, Contra Costa, CA

Built 1937 Load: 35.0 t ADT: 3,979

CHURCH LANE

Poor

Over: SAN PABLO CREEK

0.1 MI S EL PORTAL, Contra Costa, CA

Built 1955 Load: 36.6 t ADT: 12,540

MORAGA BLVD

Poor

Over: LAS TRAMPAS CREEK

0.2 MI E FIRST ST, Contra Costa, CA

Built 1937 Load: 36.6 t ADT: 2,200

STATE ROUTE 24 WB

Poor

Over: LAFAYETTE STA PUC(BARTD)

04-CC-024-R6.08-LFYT, Contra Costa, CA

Built 1970 Load: 40.2 t ADT: 79,500

CREEKSIDE DR

Poor

Over: SAN RAMON CREEK

200 FT E OF S MAIN ST, Contra Costa, CA

Built 1959 Load: 41.1 t ADT: 5,800

LA GONDA WAY

Poor

Over: SAN RAMON CREEK

AT DANVILLE BLVD, Contra Costa, CA

Built 1950 Load: 42.1 t ADT: 2,800

STATE ROUTE 24

Poor

Over: BROWN AVENUE

04-CC-024-R6.84-LFYT, Contra Costa, CA

Built 1957 Load: 43.4 t ADT: 79,500

MAIN STREET

Poor

Over: CONTRA COSTA CANAL

.01 MI SE/O OAKLEY RD, Contra Costa, CA

Built 1977 Load: 46.7 t ADT: 28,500

STATE ROUTE 242

Poor

Over: CONCORD AVENUE

04-CC-242-R1.47-CND, Contra Costa, CA

Built 1963 Load: 47.1 t ADT: 100,000

AYERS ROAD

Poor

Over: MOUNT DIABLO CREEK

0.3 MI N CLAYTON RD, Contra Costa, CA

Built 1987 Load: 49.2 t ADT: 8,000

STATE ROUTE 24

Poor

Over: EBMUD AQUEDUCT

04-CC-024-R6.75-LFYT, Contra Costa, CA

Built 1957 Load: 50.5 t ADT: 79,500

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.