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)

RICHMOND PARKWAY

Good

Over: PARKWAY WETLANDS

3.6 MI SW OF I-80, Contra Costa, CA

Built 1995 Load: 32.4 t ADT: 27,000

SOMERSVILLE ROAD

Good

Over: WEST ANTIOCH CREEK

0.05 MI W OF "O" STREET, Contra Costa, CA

Built 1992 Load: 32.4 t ADT: 6,000

ARMSTRONG ROAD

Good

Over: BRUSHY CREEK

0.3 MI W BYRON HOT SPRING, Contra Costa, CA

Built 1998 Load: 32.4 t ADT: 380

BETHEL ISLAND ROAD

Good

Over: DUTCH SLOUGH

1.5 MI N. OF E CYPRESS RD, Contra Costa, CA

Built 2010 Load: 32.4 t ADT: 5,881

EL PORTAL DRIVE

Good

Over: SAN PABLO CREEK

0.1 MI EAST OF I-80, Contra Costa, CA

Built 2013 Load: 32.4 t ADT: 10,500

PITTSB-ANTIOCH HWY

Good

Over: KIRKER CREEK

0.6 MI E OF HARBOR ST, Contra Costa, CA

Built 2005 Load: 32.4 t ADT: 10,610

MANZANITA DRIVE

Good

Over: SAN PABLO CREEK

0.2 MI E OF CAMINO PABLO, Contra Costa, CA

Built 2014 Load: 32.4 t ADT: 612

DEER VALLEY ROAD

Good

Over: CONTRA COSTA CANAL

1 MI. S. OF HWY 4, Contra Costa, CA

Built 1988 Load: 32.4 t ADT: 1,000

BARMOUTH DRIVE

Good

Over: CONTRA COSTA CANAL

0.4 MI. S.OF DAVISON RD, Contra Costa, CA

Built 1985 Load: 32.4 t ADT: 500

BLYTHE DRIVE

Good

Over: CONTRA COSTA CANAL

0.03 MI S JAMES DONLON BL, Contra Costa, CA

Built 1989 Load: 32.4 t ADT: 1,000

DOUGHERTY ROAD

Good

Over: WEST BRANCH ALAMO CREEK

1.0 MI S. OF BOLLINGER CY, Contra Costa, CA

Built 2015 Load: 32.4 t ADT: 2,760

ALHAMBRA VALLEY RD

Good

Over: PINOLE CREEK

65 FT E. CASTRO RANCH RD, Contra Costa, CA

Built 2017 Load: 32.4 t ADT: 1,000

CRESTVIEW DR

Good

Over: CONTRA COSTA CANAL

2.2 MI W RAILROAD AVE, Contra Costa, CA

Built 1981 Load: 32.4 t ADT: 5,000

HENRY AVENUE

Good

Over: PINOLE CREEK

.13 MI E OF PINOLE VLY RD, Contra Costa, CA

Built 1986 Load: 32.4 t ADT: 1,000

BAYFRONT BLVD

Good

Over: REFUGIO CREEK

AT JOHN MUIR PKWY, Contra Costa, CA

Built 2020 Load: 32.4 t ADT: 1,000

MT. DIABLO BLVD

Good

Over: SAN RAMON CREEK BYPASS

0.25 MI E. OF S. BROADWAY, Contra Costa, CA

Built 1986 Load: 32.4 t ADT: 15,300

WEST TENTH STREET

Good

Over: WEST ANTIOCH CREEK

WEST OF O STREET, Contra Costa, CA

Built 2017 Load: 32.4 t ADT: 17,298

WILDER ROAD

Good

Over: BROOKSIDE CREEK TRIB

SOUTH OF WINDY CREEK WAY, Contra Costa, CA

Built 2012 Load: 32.4 t ADT: 100

WILDER ROAD

Good

Over: BROOKSIDE CREEK TRIB

SOUTH OF DAIRY CREEK LANE, Contra Costa, CA

Built 2012 Load: 32.4 t ADT: 100

STATE ROUTE 24 WB

Good

Over: WALNUT CREEK UC (BARTD)

04-CC-024-R8.31, Contra Costa, CA

Built 1970 Load: 32.6 t ADT: 79,500

GREEN STREET

Good

Over: ARROYO DEL HAMBRE

AT FERRY STREET, Contra Costa, CA

Built 1940 Load: 33.0 t ADT: 3,000

STATE ROUTE 24 EB

Good

Over: LAFAYETTE STA PUC(BARTD)

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

Built 1971 Load: 33.4 t ADT: 79,500

OLD TUNNEL RD

Good

Over: RELIEZ CREEK

0.1 MI E PLEASANT HILL RD, Contra Costa, CA

Built 1971 Load: 33.4 t ADT: 3,100

SIMAS AVE

Good

Over: PINOLE CREEK

0.1 MI E OF PINOLE VAL RD, Contra Costa, CA

Built 1966 Load: 33.7 t ADT: 1,300

WEST LELAND RD

Good

Over: CONTRA COSTA CANAL

1.5 MI E BAILEY RD, Contra Costa, CA

Built 1976 Load: 35.0 t ADT: 7,500

GOLF CLUB ROAD

Good

Over: GRAYSON CREEK

0.15 MI W- CONTRA COSTA, Contra Costa, CA

Built 2014 Load: 35.6 t ADT: 700

STATE ROUTE 4

Good

Over: ABANDONED BNSF RY SPUR

04-CC-004-R8.85-MTZ, Contra Costa, CA

Built 1967 Load: 36.3 t ADT: 62,000

TAYLOR BLVD

Good

Over: GRAYSON CREEK

0.2 MI W CONTRA COSTA BLV, Contra Costa, CA

Built 1961 Load: 36.6 t ADT: 14,800

TAYLOR BLVD

Good

Over: CONTRA COSTA CANAL

0.8 MI W CONTRA COSTA BLV, Contra Costa, CA

Built 1961 Load: 38.2 t ADT: 12,300

SEVEN HILL RNCH RD

Good

Over: WALNUT CREEK

AT CHERRY LANE, Contra Costa, CA

Built 1965 Load: 38.9 t ADT: 2,200

WILLOW PASS RD

Good

Over: MT DIABLO CRK

0.8 MI S OF SH 4, Contra Costa, CA

Built 1944 Load: 39.9 t ADT: 7,200

PORT CHICAGO HWY

Good

Over: MOUNT DIABLO CREEK

0.6 MI N HWY 4, Contra Costa, CA

Built 1979 Load: 40.2 t ADT: 3,240

LOVERIDGE ROAD

Good

Over: CONTRA COSTA CANAL

0.2 MI N BUCHANAN RD, Contra Costa, CA

Built 1970 Load: 45.0 t ADT: 1,500

STATE ROUTE 4 WB

Good

Over: USN RR & KINNE BLVD

04-CC-004-R16.00-CND, Contra Costa, CA

Built 1975 Load: 46.3 t ADT: 73,000

BISHOP LANE

Good

Over: SAN RAMON CREEK

RUDGEAR ROAD, Contra Costa, CA

Built 1964 Load: 47.3 t ADT: 250

GARROW DRIVE

Good

Over: CONTRA COSTA CANAL

0.1 MI S OF DAVISON DR, Contra Costa, CA

Built 1991 Load: 48.6 t ADT: 4,500

RUDGEAR RD

Good

Over: SAN RAMON CREEK

DANVILLE BLVD, Contra Costa, CA

Built 1964 Load: 52.8 t ADT: 8,000

GENTRYTOWN DRIVE

Good

Over: CONTRA COSTA CANAL

0.7 MI N JAMES DONLON, Contra Costa, CA

Built 1973 Load: 53.8 t ADT: 4,500

STATE ROUTE 4 EB

Good

Over: USN RR & KINNE BLVD

04-CC-004-R16.00-CND, Contra Costa, CA

Built 1976 Load: 56.7 t ADT: 73,000

BERNARD ROAD

Good

Over: MARSH CREEK

160 M NE MAIN ST/SR-4, Contra Costa, CA

Built 2003 Load: 59.0 t ADT: 4,200

IMHOFF DRIVE

Good

Over: WALNUT CREEK

0.3 MI W SOLANO WAY, Contra Costa, CA

Built 1981 Load: 59.6 t ADT: 1,000

RAMONA ST

Good

Over: PINOLE CREEK

0.1 MI E OF PINOLE VAL RD, Contra Costa, CA

Built 1971 Load: 60.9 t ADT: 1,500

LUCILLE LN

Good

Over: GRAYSON CREEK

0.3 MI S TAYLOR BLVD, Contra Costa, CA

Built 1979 Load: 70.3 t ADT: 120

CLAYTON RD

Good

Over: PINE CREEK

300 FT EAST OF MARKET ST, Contra Costa, CA

Built 1981 Load: 83.6 t ADT: 12,000

OAK GROVE RD

Good

Over: PINE CREEK

0.5 MI N WALNUT AVE, Contra Costa, CA

Built 1974 Load: 92.7 t ADT: 6,600

INTERSTATE 80

Good

Over: SAN PABLO CREEK

04-CC-080-4.81, Contra Costa, CA

Built 1954 Load: 99.9 t ADT: 179,000

INTERSTATE 80

Good

Over: PINOLE CREEK

04-CC-080-8.40-PIN, Contra Costa, CA

Built 1957 Load: 99.9 t ADT: 179,000

INTERSTATE 80

Good

Over: RODEO CREEK

04-CC-080-10.73, Contra Costa, CA

Built 1958 Load: 99.9 t ADT: 115,000

WATERFRONT RD

Poor

Over: SLOUGH

WEST OF T1/T2, Contra Costa, CA

Built 1945

BYRON HWY

Poor

Over: CALIFORNIA AQUEDUCT

5.6 MI SOUTH OF SR 4, Contra Costa, CA

Built 1964 Load: 4.5 t ADT: 8,387

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.