Contra Costa County, CA

686 public highway bridges

Contra Costa County Bridge Snapshot

Contra Costa County, California contains 686 public highway bridges in the FHWA National Bridge Inventory. Roughly 29.7% are rated “Good,” 26.1% “Fair,” 5.5% “Poor,” and 5.5% are classified as structurally deficient — the federal designation for spans whose deck, superstructure, or substructure has been rated 4 or below on the 0–9 NBI scale. Structurally deficient does not mean unsafe to cross; it means the bridge is on the priority list for repair or replacement.

Inspections in CA are conducted by certified engineers from the state Department of Transportation on a 24-month cycle, and results are reported back to the FHWA each spring. The list below shows every NBI-tracked bridge in the county, sorted by inventory load rating. Use the “Sort by” controls to surface the lowest-rated spans first, and click any row for full inspection history, traffic counts, and condition trends.

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

686
Total Bridges
29.7%
Good
5.5%
Poor
5.5%
Structurally Deficient

Condition Distribution

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

Related

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Data sourced from official U.S. government datasets. See our methodology for details. Retrieved and formatted by PlainBridges Editorial