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)

Sort:

ALCOSTA BOULEVARD

Over: INTERSTATE 680

04-CC-680-R0.01-SRMN, Contra Costa, CA

Built 1965 ADT: 181,700

CENTER AVENUE

Over: STATE ROUTE 4

04-CC-004-R9.18-MTZ, Contra Costa, CA

Built 1975 ADT: 62,000

CUMMINGS SKYWAY

Over: STATE ROUTE 4

04-CC-004-R4.89, Contra Costa, CA

Built 1967 ADT: 43,500

STATE ROUTE 4 WB

Over: ALHAMBRA AVE

04-CC-004-R8.55-MTZ, Contra Costa, CA

Built 1967 ADT: 70,000

STATE ROUTE 4 EB

Over: ALHAMBRA AVE

04-CC-004-R8.55-MTZ, Contra Costa, CA

Built 1967 ADT: 70,000

STATE ROUTE 4 WB

Over: MCEWEN ROAD

04-CC-004-R5.17, Contra Costa, CA

Built 1967 ADT: 75

STATE ROUTE 4 EB

Over: MCEWEN ROAD

04-CC-004-R5.17, Contra Costa, CA

Built 1967 ADT: 75

STATE ROUTE 4 WB

Over: ALHAMBRA WAY

04-CC-004-R8.75-MTZ, Contra Costa, CA

Built 1967 ADT: 59,000

STATE ROUTE 4 EB

Over: ALHAMBRA WAY

04-CC-004-R8.75-MTZ, Contra Costa, CA

Built 1967 ADT: 59,000

MILANO WAY

Over: STATE ROUTE 4

04-CC-004-R11.13-MTZ, Contra Costa, CA

Built 1975 ADT: 62,000

STATE ROUTE 4 WB

Over: MORELLO AVE

04-CC-004-R10.33-MTZ, Contra Costa, CA

Built 1975 ADT: 15,000

STATE ROUTE 4 EB

Over: MORELLO AVE

04-CC-004-R10.33-MTZ, Contra Costa, CA

Built 1975 ADT: 15,000

INTERSTATE 680

Over: PINE VALLEY ROAD

04-CC-680-R1.09-SRMN, Contra Costa, CA

Built 1966 ADT: 2,950

INTERSTATE 680

Over: MONTEVIDEO DRIVE

04-CC-680-R1.89-SRMN, Contra Costa, CA

Built 1966 ADT: 5,920

GREENBROOK DRIVE

Over: INTERSTATE 680

04-CC-680-R5.33-DNVL, Contra Costa, CA

Built 1966 ADT: 176,400

BOLLINGER CYN RD

Over: INTERSTATE 680

04-CC-680-R2.88-SRMN, Contra Costa, CA

Built 1966 ADT: 181,700

STATE ROUTE 24

Over: FIRST STREET

04-CC-024-R6.51-LFYT, Contra Costa, CA

Built 1970 ADT: 1,200

STATE ROUTE 24

Over: FIRST STREET

04-CC-024-R6.51-LFYT, Contra Costa, CA

Built 1970 ADT: 1,200

STATE ROUTE 24

Over: FIRST STREET

04-CC-024-R6.51-LFYT, Contra Costa, CA

Built 1971 ADT: 1,200

CENTRAL AVENUE

Over: INTERSTATE 580

04-CC-580-0.24-RCH, Contra Costa, CA

Built 1991 ADT: 84,500

STATE ROUTE 4 WB

Over: SOLANO WAY

04-CC-004-R13.65, Contra Costa, CA

Built 1981 ADT: 5,500

STATE ROUTE 4 EB

Over: SOLANO WAY

04-CC-004-R13.65, Contra Costa, CA

Built 1981 ADT: 5,500

STATE ROUTE 4 WB

Over: PERALTA ROAD

04-CC-004-R13.96-CND, Contra Costa, CA

Built 1981 ADT: 4,500

STATE ROUTE 4 EB

Over: PERALTA ROAD

04-CC-004-R13.96-CND, Contra Costa, CA

Built 1978 ADT: 4,500

STATE ROUTE 4 WB

Over: W4-S242 CONNECTOR RAMP

04-CC-004-R14.64-CND, Contra Costa, CA

Built 1978 ADT: 100,000

STATE ROUTE 4 EB

Over: W4-S242 CONNECTOR RAMP

04-CC-004-R14.62-CND, Contra Costa, CA

Built 1978 ADT: 100,000

E4-PORT CHICAGO

Over: W4-S242 & N242-E4 CONNS

04-CC-004-R14.61-CND, Contra Costa, CA

Built 1978 ADT: 100,000

STATE ROUTE 4 WB

Over: PORT CHICAGO HWY

04-CC-004-R15.42-CND, Contra Costa, CA

Built 1976 ADT: 15,792

STATE ROUTE 4 EB

Over: PORT CHICAGO HWY

04-CC-004-R15.42-CND, Contra Costa, CA

Built 1976 ADT: 15,792

STATE ROUTE 4 WB

Over: WILLOW PASS ROAD

04-CC-004-R16.83, Contra Costa, CA

Built 1975 ADT: 22,357

STATE ROUTE 4 EB

Over: WILLOW PASS ROAD

04-CC-004-R16.83, Contra Costa, CA

Built 1976 ADT: 22,357

OLIVERA ROAD

Over: STATE ROUTE 242

04-CC-242-R2.79-CND, Contra Costa, CA

Built 1978 ADT: 100,000

N242-W4 CONNECTOR

Over: STATE ROUTES 4 & 242

04-CC-242-R3.24-CND, Contra Costa, CA

Built 1978 ADT: 80,000

PEDESTRIAN WALKWAY

Over: SR 24 ON & OFF-RAMPS

04-CC-024-R2.40-ORIN, Contra Costa, CA

Built 1969 ADT: 161,300

BARTD AERIAL C007

Over: INTERSTATE 680

04-CC-680-14.46-WLC, Contra Costa, CA

Built 1968 ADT: 235,000

BAYVIEW AVENUE OC

Over: INTERSTATE 580

04-CC-580-1.21, Contra Costa, CA

Built 1987 ADT: 84,500

SOUTH 23RD ST

Over: INTERSTATE 580

04-CC-580-R2.89-RCH, Contra Costa, CA

Built 1987 ADT: 87,000

MARINA WAY OC

Over: INTERSTATE 580

04-CC-580-R3.35-RCH, Contra Costa, CA

Built 1989 ADT: 87,000

CUTTING BLVD

Over: INTERSTATE 580

04-CC-580-R3.79-RCH, Contra Costa, CA

Built 1989 ADT: 69,000

INTERSTATE 580

Over: BNSF RY, SOUTH SECOND ST

04-CC-580-R4.09-RCH, Contra Costa, CA

Built 1990 ADT: 3,000

INTERSTATE 580

Over: CANAL BOULEVARD

04-CC-580-R4.64-RCH, Contra Costa, CA

Built 1991 ADT: 1,200

HILLTOP DRIVE WB

Over: INTERSTATE 80

04-CC-080-5.99-RCH, Contra Costa, CA

Built 1977 ADT: 3,000

HILLTOP DRIVE EB

Over: INTERSTATE 80

04-CC-080-5.99-RCH, Contra Costa, CA

Built 2009 ADT: 3,000

EAST PORTAL BLDG

Over: STATE ROUTE 24

04-CC-024-R0.28, Contra Costa, CA

Built 1964 ADT: 155,000

BNSF RY

Over: STATE ROUTE 4

04-CC-004-R1.00, Contra Costa, CA

Built 1985 ADT: 42,500

BNSF RY

Over: INTERSTATE 580

04-CC-580-R2.00-RCH, Contra Costa, CA

Built 1988 ADT: 87,000

BNSF RY

Over: INTERSTATE 580

04-CC-580-R2.06-RCH, Contra Costa, CA

Built 1988 ADT: 87,000

ERLANDSON ST

Over: INTERSTATE ROUTE 580

04-CC-580-R2.09-RCH, Contra Costa, CA

Built 1988 ADT: 87,000

APPIAN WAY NB

Over: INTERSTATE 80

04-CC-080-7.62-PIN, Contra Costa, CA

Built 1985 ADT: 190,000

STATE ROUTE 242

Over: CLAYTON ROAD-S242 ON RMP

04-CC-242-R0.78-CND, Contra Costa, CA

Built 1986 ADT: 1,000

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

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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.