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)

PRIVATE RD

Unknown

Over: SHELL AVENUE

0.2 MI N/O PACHECO BLVD, Contra Costa, CA

Built 1970 ADT: 4,386

PIPELINES

Unknown

Over: HARBOR ST

0.2 MI W OF COLUMBIA ST, Contra Costa, CA

Built 1940 ADT: 21,000

BNSF RY

Unknown

Over: SYCAMORE STREET

AT WILLOW AVENUE, Contra Costa, CA

Built 1915 ADT: 3,500

BNSF RY & AMTRAK

Unknown

Over: RAILROAD AVENUE

0.1 MI N OF CENTRAL AVE, Contra Costa, CA

Built 1988 ADT: 10,000

BARTD

Unknown

Over: WILLOW PASS RD

500 FT S. OF EVORA ROAD, Contra Costa, CA

Built 2007 ADT: 20,241

BNSF RY

Unknown

Over: RICHMOND PARKWAY

0.5 MI S OF GERTRUDE AVE, Contra Costa, CA

Built 1995 ADT: 27,000

RICHMOND PARKWAY

Unknown

Over: CASTRO ST

1/2 MI S OF GETRUDE AVE, Contra Costa, CA

Built 1995 ADT: 20,000

RICHMOND PARKWAY

Unknown

Over: GIANT HIGHWAY

INTCHG RICHMOND/GIANT RD, Contra Costa, CA

Built 1995 ADT: 6,800

RICHMOND PKWY SB

Unknown

Over: GIANT,UP RR,BNSF,AMTRAK

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

Built 1995 ADT: 5,000

RICHMOND PKWY NB

Unknown

Over: GIANT,UP RR,BNSF,AMTRAK

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

Built 1995 ADT: 5,000

BARTD

Unknown

Over: CONTRA LOMA BLVD

MEDIAN OF HWY 4, Contra Costa, CA

Built 2015 ADT: 6,000

BARTD

Unknown

Over: A STREET

0.1 MI S OF BRYAN AVE, Contra Costa, CA

Built 2020 ADT: 5,000

BARTD

Unknown

Over: CAVALLO ROAD

0.1 MI S OF SUNSET DR, Contra Costa, CA

Built 2020 ADT: 500

IRON HORSE TRAIL

Unknown

Over: TREAT BLVD

AT JONES RD, Contra Costa, CA

Built 2010 ADT: 49,100

LAWRENCE WAY

Unknown

Over: PARKSIDE DRIVE

800 FT N. OF MAIN STREET, Contra Costa, CA

Built 1992 ADT: 12,800

RAILROAD AVE

Fair

Over: CONTRA COSTA CANAL

0.7 MI S SH 4, Contra Costa, CA

Built 1938 Load: 14.6 t ADT: 20,300

SAN PABLO AVE

Fair

Over: SAN PABLO CREEK

AT ROAD 20, Contra Costa, CA

Built 1926 Load: 15.6 t ADT: 20,490

INTERSTATE 680

Fair

Over: CANAL & BIKE PATH

04-CC-680-16.08, Contra Costa, CA

Built 1956 Load: 16.2 t ADT: 257,000

MONUMENT BLVD

Fair

Over: PINE CREEK

0.2 MI NE OAK GROVE RD, Contra Costa, CA

Built 1940 Load: 16.2 t ADT: 32,500

BYRON HWY

Fair

Over: KELLOGG CREEK

0.5 MI S SR 4, Contra Costa, CA

Built 1940 Load: 16.2 t ADT: 13,637

MARSH CREEK RD

Fair

Over: MARSH CREEK

3 MI E MORGAN TERITORY RD, Contra Costa, CA

Built 1937 Load: 16.2 t ADT: 5,637

MARINA VISTA AVE

Fair

Over: SHELL OIL CO PIPE UC

0.4 MI S/W SHELL AVE, Contra Costa, CA

Built 1920 Load: 16.2 t ADT: 14,000

MARSH CREEK RD

Fair

Over: MARSH CREEK

7.3 MI E MORGAN TERITY RD, Contra Costa, CA

Built 1934 Load: 16.8 t ADT: 5,588

DIABLO RD

Fair

Over: GREEN VALLEY CREEK

0.5 MI E/O I-680, Contra Costa, CA

Built 1953 Load: 16.8 t ADT: 18,463

WILLOW PASS RD

Fair

Over: WALNUT CREEK

AT I-680, Contra Costa, CA

Built 1954 Load: 17.2 t ADT: 37,000

WREN AVE

Fair

Over: CONTRA COSTA CANAL

0.05 MI E 6TH ST, Contra Costa, CA

Built 1939 Load: 17.2 t ADT: 850

TENNENT AVE

Fair

Over: PINOLE CREEK

0.3 MI S SAN PABLO AVE, Contra Costa, CA

Built 1967 Load: 17.5 t ADT: 8,000

N. BROADWAY

Fair

Over: WALNUT CREEK

B/W LINCOLN & DUNCAN ST., Contra Costa, CA

Built 1971 Load: 17.8 t ADT: 20,905

CARQUINEZ SCENIC D

Fair

Over: ECKLEY SLIDE

2.1 MI E I-80 IN CROCKETT, Contra Costa, CA

Built 1919 Load: 18.8 t ADT: 470

NORSE DR

Fair

Over: CONTRA COSTA CANAL

AT PASO NOGAL, Contra Costa, CA

Built 1972 Load: 18.8 t ADT: 800

PERADA DR

Fair

Over: PINE CREEK

0.1 MI E CITRUS AVE, Contra Costa, CA

Built 1958 Load: 19.1 t ADT: 900

STATE ROUTE 4 EB

Fair

Over: RODEO CREEK

04-CC-004-R1.96R, Contra Costa, CA

Built 1920 Load: 19.4 t ADT: 20,250

HARBOR ST

Fair

Over: CONTRA COSTA CANAL

0.01 MI S STONEMAN AVE, Contra Costa, CA

Built 1966 Load: 19.4 t ADT: 13,000

CONCORD AVE

Fair

Over: WALNUT CREEK

0.83 MI E SH 680, Contra Costa, CA

Built 1964 Load: 19.8 t ADT: 18,144

CONCORD AVE

Fair

Over: WALNUT CREEK

0.83 MI E SH 680, Contra Costa, CA

Built 1964 Load: 20.4 t ADT: 17,732

HOFFMAN LANE

Fair

Over: KELLOGG CREEK

1.0 MI S MARSH CREEK RD, Contra Costa, CA

Built 1952 Load: 20.4 t ADT: 334

INTERSTATE 680 SB

Fair

Over: UP,BNSF,AMTRAK,SUISUN BA

04-CC-680-25.04L-MTZ, Contra Costa, CA

Built 1962 Load: 20.7 t ADT: 115,000

DIAMOND BLVD

Fair

Over: WALNUT CREEK

0.1 MI N WILLOW PASS RD, Contra Costa, CA

Built 1966 Load: 20.7 t ADT: 33,000

INTERSTATE 580

Fair

Over: SAN PABLO BAY

04-CC-580-6.22-RCH, Contra Costa, CA

Built 1956 Load: 21.4 t ADT: 80,000

FREEMAN ROAD

Fair

Over: LAS TRAMPAS CREEK

0.1 MI WEST OF STANLEY CT, Contra Costa, CA

Built 1946 Load: 21.7 t ADT: 625

PARK & RIDE ACCESS

Fair

Over: PINE CREEK

04-CC-242-R0.85-CND, Contra Costa, CA

Built 1964 Load: 22.0 t ADT: 200

MILBURN DR

Fair

Over: GRAYSON CREEK

0.1 MI W LUCILLE LN, Contra Costa, CA

Built 1967 Load: 22.0 t ADT: 100

GREENBROOK DR

Fair

Over: SAN RAMON CREEK

0.3 MI E CAMINO RAMON, Contra Costa, CA

Built 1965 Load: 22.7 t ADT: 7,643

DIAMOND BLVD

Fair

Over: WALNUT CREEK

0.1 MI N WILLOW PASS RD, Contra Costa, CA

Built 1966 Load: 23.0 t ADT: 33,000

PACIFIC AVE

Fair

Over: UP RR, BNSF RY, & AMTRAK

AT SAN PABLO AVE, Contra Costa, CA

Built 1958 Load: 23.0 t ADT: 1,518

INTERSTATE 580 WB

Fair

Over: HILLSIDE

04-CC-580-R5.60-RCH, Contra Costa, CA

Built 1985 Load: 23.3 t ADT: 34,000

STATE ROUTE 4

Fair

Over: MAINTENANCE ACCESS

04-CC-004-24.97-ANT, Contra Costa, CA

Built 1953 Load: 23.7 t ADT: 114,000

MONUMENT BLVD

Fair

Over: WALNUT CREEK

AT MOHR LANE, Contra Costa, CA

Built 1965 Load: 23.7 t ADT: 33,600

BRENTWOOD BLVD

Fair

Over: MARSH CREEK

0.1 M N/O KAYLA PL, Contra Costa, CA

Built 1928 Load: 23.7 t ADT: 17,900

NEWELL AVE

Fair

Over: SAN RAMON CREEK

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

Built 1940 Load: 23.7 t ADT: 16,200

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.