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)

YGNACIO VALLEY RD

Good

Over: WALNUT CREEK

0.8 MI E OF I 680, Contra Costa, CA

Built 1975 Load: 32.4 t ADT: 65,100

BAILEY RD

Good

Over: CONTRA COSTA CANAL

AT SR 4, Contra Costa, CA

Built 1969 Load: 32.4 t ADT: 16,200

DELTA ROAD

Good

Over: ROCK SLOUGH

3 MI E KNIGHTSEN, Contra Costa, CA

Built 2001 Load: 32.4 t ADT: 532

EL PORTAL AVE

Good

Over: SAN RAMON CREEK

0.06 MI NE DANVILLE BLVD, Contra Costa, CA

Built 1989 Load: 32.4 t ADT: 600

CAMINO DIABLO

Good

Over: KELLOGG CREEK

0.2 MI E VASCO RD, Contra Costa, CA

Built 1988 Load: 32.4 t ADT: 1,462

DEER VALLEY RD

Good

Over: MARSH CREEK

0.3 MI N MARSH CREEK RD, Contra Costa, CA

Built 1991 Load: 32.4 t ADT: 2,400

HOUGH AVE

Good

Over: LAFAYETTE CREEK

0.3 MI S MOUNT DIABLO BLV, Contra Costa, CA

Built 1986 Load: 32.4 t ADT: 2,000

NICHOLS RD

Good

Over: UP RR, BNSF RY, & AMTRAK

0.3 MI N PORT CHICAGO HY, Contra Costa, CA

Built 1991 Load: 32.4 t ADT: 485

MARINA VISTA AVE

Good

Over: ARROYO DEL HAMBRE

AT CASTRO ST, Contra Costa, CA

Built 1989 Load: 32.4 t ADT: 4,500

HILLCREST AVE

Good

Over: CONTRA COSTA CANAL

1.6 MI S SH 4, Contra Costa, CA

Built 1990 Load: 32.4 t ADT: 9,500

EMPIRE AVE

Good

Over: CONTRA COSTA CANAL

0.01 MI N LAUREL RD, Contra Costa, CA

Built 1994 Load: 32.4 t ADT: 14,901

DIABLO SHADOW DR

Good

Over: PINE CREEK

0.1 MI E OAK GROVE RD, Contra Costa, CA

Built 1975 Load: 32.4 t ADT: 1,900

VALLEY VISTA RD

Good

Over: PINE CREEK

0.1 MI E OAK GROVE RD, Contra Costa, CA

Built 1989 Load: 32.4 t ADT: 2,400

SUNSHINE DR

Good

Over: PINE CREEK

0.2 MI NE MEADOW LN, Contra Costa, CA

Built 1982 Load: 32.4 t ADT: 500

VASCO ROAD

Good

Over: BRUSHY CREEK

7.1 MI S/O WALNUT BLVD, Contra Costa, CA

Built 1996 Load: 32.4 t ADT: 19,806

VASCO ROAD

Good

Over: BRUSHY CREEK

5.1 MI S WALNUT BLVD, Contra Costa, CA

Built 1996 Load: 32.4 t ADT: 19,806

VASCO ROAD

Good

Over: UNIMAN/FRISK CREEK

3.4 MI S WALNUT BLVD, Contra Costa, CA

Built 1996 Load: 32.4 t ADT: 19,806

VASCO ROAD

Good

Over: KELLOGG CREEK

0.1 MI S WALNUT BLVD, Contra Costa, CA

Built 1996 Load: 32.4 t ADT: 17,424

BOLLINGER CANYON

Good

Over: EAST BRANCH ALAMO CREEK

JUST S OF HARCOURT RD, Contra Costa, CA

Built 2006 Load: 32.4 t ADT: 5,000

WATERMILL ROAD

Good

Over: EAST BRANCH ALAMO CREEK

JUST S. OF HARCOURT WAY, Contra Costa, CA

Built 2006 Load: 32.4 t ADT: 500

WINDEMERE PARKWAY

Good

Over: EAST BRANCH ALAMO CREEK

0.6 MI E. BOLLINGER PKWY, Contra Costa, CA

Built 2006 Load: 32.4 t ADT: 2,000

WINDEMERE PARKWAY

Good

Over: ALAMO CREEK SOUTH FORK

1 MI E. BOLLINGER PKWY, Contra Costa, CA

Built 2005 Load: 32.4 t ADT: 2,000

BOLLINGER CANYON

Good

Over: MAIN BRANCH ALAMO CREEK

1 MI E CROW CANYON RD, Contra Costa, CA

Built 2006 Load: 32.4 t ADT: 5,000

BOLLINGER CANYON

Good

Over: WEST BRANCH ALAMO CREEK

0.1 MI W. OF DOUGHERTY RD, Contra Costa, CA

Built 2005 Load: 32.4 t ADT: 2,760

BOLLINGER CANYON R

Good

Over: E BRANCH PKWY

.1 MI S OF E BRANCH PKWY, Contra Costa, CA

Built 2005 Load: 32.4 t ADT: 5,000

WINDEMERE PARKWAY

Good

Over: CAMINO TASSAJARA

.3 MI W. CAMINO TASSAJARA, Contra Costa, CA

Built 2007 Load: 32.4 t ADT: 2,000

CASABLANCA ROAD

Good

Over: SHADOW CREEK

.1 MI W OF CREEKVIEW PL., Contra Costa, CA

Built 2006 Load: 32.4 t ADT: 1,000

SOMERSVILLE ROAD

Good

Over: CONTRA COSTA CANAL

0.35 MI SW BUCHANAN RD, Contra Costa, CA

Built 2009 Load: 32.4 t ADT: 13,686

DOUGHERTY ROAD

Good

Over: WEST BRANCH ALAMO CREEK

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

Built 2015 Load: 32.4 t ADT: 2,760

SUNSET ROAD

Good

Over: MARSH CREEK

1/10 MI E BRENTWOOD BLVD, Contra Costa, CA

Built 2005 Load: 32.4 t ADT: 5,800

SAND CREEK ROAD

Good

Over: MARSH CREEK

AT O'HARA AVE, Contra Costa, CA

Built 2002 Load: 32.4 t ADT: 20,000

ORWOOD ROAD

Good

Over: WERNER DREDGER CUT

2 MI. E. OF BYRON HWY, Contra Costa, CA

Built 2016 Load: 32.4 t ADT: 1,164

SAN PABLO AVE

Good

Over: RODEO CREEK

AT PARKER STREET, Contra Costa, CA

Built 2015 Load: 32.4 t ADT: 3,294

MARSH CREEK ROAD

Good

Over: MARSH CREEK

0.2 MI E OF ASPARA DRIVE, Contra Costa, CA

Built 2018 Load: 32.4 t ADT: 5,637

CO. JAIL ACCESS RD

Good

Over: MARSH CREEK

0.25 MI. S. MARSH CR. RD, Contra Costa, CA

Built 2014 Load: 32.4 t ADT: 150

CANAL ROAD

Good

Over: CONTRA COSTA CANAL

0.5 MI. W OF BAILEY ROAD, Contra Costa, CA

Built 2018 Load: 32.4 t ADT: 3,010

13TH ST

Good

Over: WILDCAT CREEK

0.1 MI S OF BROOKSIDE DR., Contra Costa, CA

Built 1994 Load: 32.4 t ADT: 25,106

BANCROFT ROAD

Good

Over: CONTRA COSTA CANAL

0.2 MI S TREAT BLVD, Contra Costa, CA

Built 1968 Load: 32.4 t ADT: 29,800

GREGORY LN

Good

Over: GRAYSON CREEK

0.4 MI W CONTRA COSTA BL, Contra Costa, CA

Built 1959 Load: 32.4 t ADT: 10,000

TREAT BLVD

Good

Over: CONTRA COSTA CANAL

0.1 MI E SAN MIGUEL RD, Contra Costa, CA

Built 1970 Load: 32.4 t ADT: 18,245

DETROIT AVE

Good

Over: PINE CREEK

AT WHITMAN RD, Contra Costa, CA

Built 1960 Load: 32.4 t ADT: 4,493

CHILPACINGO PARKWY

Good

Over: GRAYSON CREEK

0.1 MI W CONTRA COSTA BL, Contra Costa, CA

Built 1969 Load: 32.4 t ADT: 10,810

CHRISTEN DR

Good

Over: CONTRA COSTA CANAL

0.04 MI S THIRD AVE, Contra Costa, CA

Built 1990 Load: 32.4 t ADT: 3,200

COWELL ST

Good

Over: GALINDO CREEK

0.05 MI S BABEL LANE, Contra Costa, CA

Built 1978 Load: 32.4 t ADT: 9,000

VIEWPOINTE BLVD

Good

Over: RODEO CREEK

0.1 MI E WILLOW AVE, Contra Costa, CA

Built 1974 Load: 32.4 t ADT: 8,599

DIABLO RD

Good

Over: GREEN VALLEY CREEK

0.2 MI E EL CERRO BLVD, Contra Costa, CA

Built 1959 Load: 32.4 t ADT: 14,013

SYCAMORE VALLEY RD

Good

Over: SYCAMORE CREEK

0.2 MI W CAMINO TASSAJARA, Contra Costa, CA

Built 1974 Load: 32.4 t ADT: 28,237

VIA DORA DRIVE

Good

Over: CONTRA COSTA CANAL

AT HILLCREST AVENUE, Contra Costa, CA

Built 1984 Load: 32.4 t ADT: 1,500

CENTRAL BLVD

Good

Over: MARSH CREEK

0.1 MI W ESTATES DR, Contra Costa, CA

Built 1991 Load: 32.4 t ADT: 6,700

WILLOW PASS ROAD

Good

Over: CONTRA COSTA CANAL

0.1MI SW PORT CHICAGO HWY, Contra Costa, CA

Built 1994 Load: 32.4 t ADT: 19,000

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.