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)

Sort:

SR 160 SB

Over: WILBUR AVENUE

04-CC-160-1.50, Contra Costa, CA

Built 1971 ADT: 23,000

INTERSTATE 80

Over: POTRERO AVE & S80 ON RMP

04-CC-080-1.67-ECR, Contra Costa, CA

Built 1956 ADT: 9,620

BNSF RY

Over: STATE ROUTE 4 EB

04-CC-004-R3.66R, Contra Costa, CA

Built 1925 ADT: 43,500

S242-S680 CONNECTR

Over: INTERSTATE 680

04-CC-242-R0.08-CND, Contra Costa, CA

Built 1963 ADT: 229,000

SR 160 SB

Over: E 18TH STREET

04-CC-160-1.00, Contra Costa, CA

Built 1971 ADT: 36,700

SR 160 NB

Over: E 18TH STREET

04-CC-160-1.00, Contra Costa, CA

Built 1971 ADT: 36,700

E24-PLEASANT HILL

Over: MOUNT DIABLO BOULEVARD

04-CC-024-R7.60-LFYT, Contra Costa, CA

Built 1971 ADT: 16,700

I 580 EB OFF RAMP

Over: BNSF RY & GARRARD BLVD

04-CC-580-R4.82-RCH, Contra Costa, CA

Built 1991 ADT: 3,000

EB ONRAMP

Over: BNSF RY & GARRARD BLVD

04-CC-580-R4.82-RCH, Contra Costa, CA

Built 1980 ADT: 3,000

I 580 EB

Over: BNSF RY & GARRARD BLVD

04-CC-580-R4.82-RCH, Contra Costa, CA

Built 1980 ADT: 3,000

I 580 WB

Over: BNSF RY & GARRARD BLVD

04-CC-580-R4.81-RCH, Contra Costa, CA

Built 1991 ADT: 3,000

CANAL BL-W580 ONRP

Over: BNSF RY & GARRARD BLVD

04-CC-580-R4.81-RCH, Contra Costa, CA

Built 1980 ADT: 3,000

INTERSTATE 680

Over: RUDGEAR ROAD

04-CC-680-R12.61-WLC, Contra Costa, CA

Built 1964 ADT: 3,140

INTERSTATE 80 WB

Over: CUTTING BLVD

04-CC-080-2.04-RCH, Contra Costa, CA

Built 1997 ADT: 23,140

INTERSTATE 80 EB

Over: CUTTING BLVD

04-CC-080-2.04-RCH, Contra Costa, CA

Built 1997 ADT: 23,140

INTERSTATE 80

Over: MACDONALD AVE & E80 OFF

04-CC-080-2.62-RCH, Contra Costa, CA

Built 1956 ADT: 4,420

E80-MACDONALD OFF

Over: MACDONALD AVE & E80 OFF

04-CC-080-2.59-RCH, Contra Costa, CA

Built 1979 ADT: 4,420

INTERSTATE 80

Over: BARRETT AVENUE

04-CC-080-2.82-RCH, Contra Costa, CA

Built 1956 ADT: 18,550

E80-SAN PABLO OFF

Over: BARRETT AVENUE

04-CC-080-2.82-RCH, Contra Costa, CA

Built 1997 ADT: 18,550

INTERSTATE 80

Over: SAN PABLO AVENUE

04-CC-080-2.96-RCH, Contra Costa, CA

Built 1956 ADT: 19,200

W80-BARRETT OFFRMP

Over: SAN PABLO AVENUE

04-CC-080-2.97-RCH, Contra Costa, CA

Built 1964 ADT: 19,200

SOLANO AVENUE

Over: INTERSTATE 80

04-CC-080-3.40-RCH, Contra Costa, CA

Built 1996 ADT: 179,000

MCBRYDE AVENUE

Over: INTERSTATE 80

04-CC-080-3.80-RCH, Contra Costa, CA

Built 1997 ADT: 179,000

SAN PABLO DAM ROAD

Over: INTERSTATE 80

04-CC-080-4.34-SPB, Contra Costa, CA

Built 1956 ADT: 179,000

W24-CAMINO PABLO

Over: CAMINO PABLO

04-CC-024-R2.31-ORIN, Contra Costa, CA

Built 1969 ADT: 4,460

STATE ROUTE 24 WB

Over: CAMINO PABLO

04-CC-024-R2.31-ORIN, Contra Costa, CA

Built 1969 ADT: 4,460

STATE ROUTE 24 EB

Over: CAMINO PABLO

04-CC-024-R2.31-ORIN, Contra Costa, CA

Built 1954 ADT: 4,460

INTERSTATE 680

Over: MONUMENT BOULEVARD

04-CC-680-R17.70-PLHL, Contra Costa, CA

Built 1998 ADT: 35,000

SR 24 WB RAMP

Over: PLEASANT HILL ROAD

04-CC-024-R7.66-LFYT, Contra Costa, CA

Built 1970 ADT: 45,700

SR 24 WB

Over: PLEASANT HILL ROAD

04-CC-024-R7.66-LFYT, Contra Costa, CA

Built 1970 ADT: 45,700

SR 24 EB

Over: PLEASANT HILL ROAD

04-CC-024-R7.66-LFYT, Contra Costa, CA

Built 1971 ADT: 45,700

SR 24 EB RAMP

Over: PLEASANT HILL ROAD

04-CC-024-R7.66-LFYT, Contra Costa, CA

Built 1971 ADT: 45,700

OAKLEY ROAD

Over: STATE ROUTE 160

04-CC-160-0.48, Contra Costa, CA

Built 1971 ADT: 23,900

STATE ROUTE 24

Over: ACALANES ROAD

04-CC-024-R4.40-LFYT, Contra Costa, CA

Built 1969 ADT: 16,700

STATE ROUTE 24 WB

Over: ACALANES ROAD

04-CC-024-R4.40-LFYT, Contra Costa, CA

Built 1969 ADT: 16,700

STATE ROUTE 24 EB

Over: ACALANES ROAD

04-CC-024-R4.40-LFYT, Contra Costa, CA

Built 1959 ADT: 16,700

E24 & ACALANES RD

Over: ACALANES ROAD

04-CC-024-R4.40-LFYT, Contra Costa, CA

Built 1959 ADT: 16,700

ST STEPHENS DRIVE

Over: STATE ROUTE 24 & BARTD

04-CC-024-R3.47-ORIN, Contra Costa, CA

Built 1969 ADT: 159,000

INTERSTATE 80

Over: CENTRAL AVENUE

04-CC-080-0.22-RCH, Contra Costa, CA

Built 1958 ADT: 28,350

OAK PARK BLVD

Over: I 680, N MAIN STREET

04-CC-680-16.88-PLHL, Contra Costa, CA

Built 1982 ADT: 18,000

OAKVALE ROAD

Over: INTERSTATE 680

04-CC-680-14.56-WLC, Contra Costa, CA

Built 1997 ADT: 40,000

S680-W24 CONNECTOR

Over: YGNACIO VALLEY ROAD

04-CC-680-14.85-WLC, Contra Costa, CA

Built 1994 ADT: 66,100

INTERSTATE 680 SB

Over: YGNACIO VALLEY ROAD

04-CC-680-14.85-WLC, Contra Costa, CA

Built 1995 ADT: 66,100

INTERSTATE 680 NB

Over: YGNACIO VALLEY ROAD

04-CC-680-14.85-WLC, Contra Costa, CA

Built 1995 ADT: 66,100

INTERSTATE 680

Over: PARKSIDE DRIVE

04-CC-680-15.24-WLC, Contra Costa, CA

Built 1960 ADT: 12,800

NORTH MAIN STREET

Over: INTERSTATE 680

04-CC-680-15.61-WLC, Contra Costa, CA

Built 1996 ADT: 257,000

TREAT BOULEVARD

Over: INTERSTATE 680

04-CC-680-16.40, Contra Costa, CA

Built 1982 ADT: 257,000

INTERSTATE 80

Over: PINOLE VALLEY ROAD

04-CC-080-8.51-PIN, Contra Costa, CA

Built 1957 ADT: 19,900

INTERSTATE 80

Over: EL PORTAL DRIVE

04-CC-080-5.25, Contra Costa, CA

Built 1956 ADT: 24,500

INTERSTATE 80

Over: CARLSON BLVD

04-CC-080-1.00-RCH, Contra Costa, CA

Built 1960 ADT: 14,920

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

Reviewed byPlainbridges Editorial, Plain Bridges Editorial Team · June 6, 2026