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)

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