State profile · Below median Poor share

California bridge safety

Condition ratings, load ratings, and Poor-condition data for every public highway bridge in California, based on the FHWA National Bridge Inventory.

27,040
Public bridges
32.5%
Good condition
4.6%
Poor condition

Data updated May 2026

Total Bridges

27,040

Public highway bridges in California

Good Condition

32.5%

8,777 bridges rated 7-9

-17.5pp vs 50% benchmark

Poor Condition

4.6%

1,244 bridges whose lowest applicable component is rated 0-4

-2.4pp vs national avg 7.0%

California vs national bridge condition

California - Good condition share 32.5%
National avg

Share of bridges rated 7-9 on the FHWA 0-9 scale (deck, superstructure, substructure all good).

California - Poor-condition share 15.3%
National avg

Lower is better. Bar maxes at 30% (worst-state ceiling). National average sits at 7.0%.

Condition Distribution

California45.2%48.3%GoodFairPoor
Bridge inventory deck-condition mix - California (FHWA NBI)

Counties (58)

Alameda 800 Alpine 32 Amador 62 Butte 441 Calaveras 106 Colusa 211 Contra Costa 686 Del Norte 96 El Dorado 196 Fresno 929 Glenn 242 Humboldt 398 Imperial 448 Inyo 67 Kern 686 Kings 168 Lake 129 Lassen 108 Los Angeles 3937 Madera 250 Marin 217 Mariposa 109 Mendocino 357 Merced 532 Modoc 87 Mono 49 Monterey 390 Napa 160 Nevada 135 Orange 1224 Placer 347 Plumas 170 Riverside 1142 Sacramento 775 San Benito 76 San Bernardino 1465 San Diego 1707 San Francisco 170 San Joaquin 666 San Luis Obispo 408 San Mateo 393 Santa Barbara 429 Santa Clara 1041 Santa Cruz 203 Shasta 500 Sierra 65 Siskiyou 423 Solano 383 Sonoma 613 Stanislaus 390 Sutter 120 Tehama 452 Trinity 194 Tulare 599 Tuolumne 128 Ventura 511 Yolo 282 Yuba 136

California vs nearby ranks

Adjacent states by Poor-condition share (lower share = better)

States are ranked by the share of bridges whose lowest applicable component rating is 4 or below. This describes recorded condition; it does not measure funding effectiveness or live crossing safety. States here sit immediately above and below California on the same metric.

OH

Ohio

4.54% top marginal rate
Structure
Progressive
Burden @ $100K
$26,753

NJ

New Jersey

4.59% top marginal rate
Structure
Progressive
Burden @ $100K
$6,796
Selected

CA

California

4.60% top marginal rate
Structure
Progressive
Burden @ $100K
$27,040

AR

Arkansas

4.71% top marginal rate
Structure
Progressive
Burden @ $100K
$5,544

WA

Washington

4.81% top marginal rate
Structure
Progressive
Burden @ $100K
$8,808

Bridges Needing Most Attention in California

Six lowest-condition bridges in California, ranked by the portal's composite display score. Inspection intervals are risk-based under current NBIS rules.

SPRING CREEK RD

Poor

Over: FALL RIVER

0.5 MI N OF MCARTHUR RD, Shasta, CA

Built 1950 Load: 2.7 t ADT: 50

ORESTIMBA ROAD

Poor

Over: CCID MAIN CANAL

0.1 MI E DRAPER RD, Stanislaus, CA

Built 1919 Load: 2.9 t ADT: 684

CLARK STREET

Poor

Over: M.I.D. CANAL

0.1 MI WEST OF ROAD 26.0, Madera, CA

Built 1955 Load: 3.2 t ADT: 200

GULLING STREET

Poor

Over: MIDDLE FORK FEATHER RIV

0.2 MI S SH 70, Plumas, CA

Built 1954 Load: 3.2 t ADT: 10,046

AVENUE 10

Poor

Over: COTTONWOOD CREEK

JUST E/O ROAD 23, Madera, CA

Built 1950 Load: 3.6 t ADT: 50

S BISHOP AVE

Poor

Over: CRESCENT DITCH

0.64 MI S/O MT WHITNEY AV, Fresno, CA

Built 1950 Load: 3.9 t ADT: 125

All Bridges in California

W92-S880 CONNECTOR

Unknown

Over: I 880, E92-N880 CONNECTR

04-ALA-092-6.37-HAY, Alameda, CA

Built 2010 ADT: 101,000

E92-N880 CONNECTR

Unknown

Over: I 880, S880-E92 CONNECTR

04-ALA-092-6.27-HAY, Alameda, CA

Built 2009 ADT: 106,000

BARTD

Unknown

Over: S880-UNION & UNION-N880

04-ALA-880-R32.58-OAK, Alameda, CA

Built 1968 ADT: 126,000

HIGHT ST -N880

Unknown

Over: SR 77 & S880-N77 CNNCTR

04-ALA-880-27.70-OAK, Alameda, CA

Built 2013 ADT: 24,500

INTERSTATE 580 WB

Unknown

Over: INTERSTATE 205 EB

04-ALA-580-0.40R, Alameda, CA

Built 2009 ADT: 122,000

UP RR, BNSF RY

Unknown

Over: STATE RTE 262 MISSION BL

04-ALA-262-R0.43-FMT, Alameda, CA

Built 2015 ADT: 76,000

RR TRACKS (BARTD)

Unknown

Over: STATE RTE 262 MISSION BL

04-ALA-262-R0.45-FMT, Alameda, CA

Built 2015 ADT: 76,000

STANLEY BLVD

Unknown

Over: STATE ROUTE 84 (ISABEL)

04-ALA-084-R26.98-LVMR, Alameda, CA

Built 2003 ADT: 43,000

UNION PACIFIC RR

Unknown

Over: STATE ROUTE 84 (ISABEL)

04-ALA-084-R27.00-LVMR, Alameda, CA

Built 2003 ADT: 22,800

PORTOLA AVE

Unknown

Over: I-580,ARROYO LAS POSITAS

04-ALA-580-13.22, Alameda, CA

Built 2011 ADT: 208,000

ST RTE 84 (ISABEL)

Unknown

Over: INTERSTATE 580

04-ALA-084-N28.15-LVMR, Alameda, CA

Built 2011 ADT: 95,000

BARTD

Unknown

Over: W24-PATTON ST OFF RAMP

04-ALA-024-R4.16-OAK, Alameda, CA

Built 1970 ADT: 5,000

STATE ROUTE 238 NB

Unknown

Over: SR 185 (14TH STREET)

04-ALA-238-14.93, Alameda, CA

Built 2010 ADT: 18,000

UP RR SPUR

Unknown

Over: STATE ROUTE 238

04-ALA-238-3.77-FMT, Alameda, CA

Built 2006 ADT: 27,000

UP RR & BNSF RY

Unknown

Over: STATE ROUTE 238

04-ALA-238-3.40-FMT, Alameda, CA

Built 2006 ADT: 10,000

PEDESTRIAN WALKWAY

Unknown

Over: INTERSTATE 580 WB

04-ALA-580-20.98-PLE, Alameda, CA

Built 2015 ADT: 99,273

PEDESTRIAN WALKWAY

Unknown

Over: INTERSTATE 580 EB

04-ALA-580-20.98-PLE, Alameda, CA

Built 2015 ADT: 82,727

I880 SB

Unknown

Over: UPRR,AMTRAK,SR77,HIGH ST

04-ALA-880-27.63-OAK, Alameda, CA

Built 2013 ADT: 21,500

I880 NB

Unknown

Over: UPRR,AMTRAK,SR77,HIGH

04-ALA-880-27.63-OAK, Alameda, CA

Built 2013 ADT: 21,500

MARINA BLVD

Unknown

Over: INTERSTATE 880

04-ALA-880-22.84-SLN, Alameda, CA

Built 2016 ADT: 217,000

STATE ROUTE 112

Unknown

Over: INTERSTATE 880

04-ALA-112-R0.47-SLN, Alameda, CA

Built 2016 ADT: 217,000

BARTD

Unknown

Over: ROUTE I 880 AND RAMPS

04-ALA-880-25.54-OAK, Alameda, CA

Built 2014 ADT: 20,000

CALAROGA AVE

Unknown

Over: STATE ROUTE 92 & RAMP

04-ALA-092-R6.03-HAY, Alameda, CA

Built 2011 ADT: 5,000

29TH AVENUE

Unknown

Over: INTERSTATE 880

04-ALA-880-28.69-OAK, Alameda, CA

Built 2020 ADT: 2,000

INTERSTATE 880

Unknown

Over: 29 TH AVENUE

04-ALA-880-28.69, Alameda, CA

Built 2020 ADT: 8,220

23RD AVENUE

Unknown

Over: INTERSTATE 880

04-ALA-880-28.95-OAK, Alameda, CA

Built 2020 ADT: 22,500

INTERSTATE 880

Unknown

Over: UP RR, BNSF, AMTRAK, 5TH

04-ALA-880-30.38-ALA, Alameda, CA

Built 2013 ADT: 10,000

SHERIDAN ROAD

Unknown

Over: INTERSTATE ROUTE 680

04-ALA-680-R8.32, Alameda, CA

Built 2020 ADT: 153,300

TOLL PLAZA CANOPY

Unknown

Over: STATE ROUTE 92 WB

04-ALA-092-R2.59, Alameda, CA

Built 1992 ADT: 86,000

TOLL PLAZA CANOPY

Unknown

Over: STATE ROUTE 92 WB

04-ALA-092-R2.69, Alameda, CA

Built 2003 ADT: 86,000

PEDESTRIAN & BIKE

Unknown

Over: INTERSTATE ROUTE 80

04-ALA-080-6.49-BER, Alameda, CA

Built 2023 ADT: 233,000

WEST GRAND AVENUE

Unknown

Over: UPRR, BNSF, AMTRAK, WOOD

04-ALA-000-0.00-OAK, Alameda, CA

Built 1997 ADT: 4,500

UP RR,BNSF RY,ACE

Unknown

Over: ALTAMONT PASS ROAD

0.4 MI E/O GREENVILLE RD, Alameda, CA

Built 1908 ADT: 400

UP RR,BNSF,AMTRAK

Unknown

Over: NILES BLVD

0.15 MI SW OF ST RTE 238, Alameda, CA

Built 1937 ADT: 5,200

UP RR

Unknown

Over: LOWRY RD

0.5 MI SW/O ALVARADO BLVD, Alameda, CA

Built 1960 ADT: 9,300

UPRR, BNSF, AMTRAK

Unknown

Over: PLEASANTON-SUNOL RD

0.1 MI W OF HWY 680, Alameda, CA

Built 1985 ADT: 2,500

UP RR & BARTD

Unknown

Over: WASHINGTON AVE

0.4 MI S/O MARINA BLVD, Alameda, CA

Built 1936 ADT: 16,800

PEDESTRIAN WALKWAY

Unknown

Over: BROADWAY

NEAR PATTON ST, Alameda, CA

Built 1967 ADT: 5,000

BARTD

Unknown

Over: HESPERIAN BLVD

0.2 MI S/O HALCYON DR, Alameda, CA

Built 1969 ADT: 21,000

UP RR, BNSF,AMTRAK

Unknown

Over: PLEASANTON-SUNOL RD

0.1 MI W OF I-580, Alameda, CA

Built 1965 ADT: 5,300

UPRR, BNSF, & ACE

Unknown

Over: PLEASANTON-SUNOL RD

NEAR VERONA RD W/O I680, Alameda, CA

Built 1907 ADT: 1,800

UP RR, BNSF, ACE

Unknown

Over: ALTAMONT PASS ROAD

3.7 MI E OF GREENVILLE RD, Alameda, CA

Built 1907 ADT: 400

UP RR & BNSF RY

Unknown

Over: INDUSTRIAL PARKWAY WEST

0.3 MI SW/O SR 238, Alameda, CA

Built 1967 ADT: 34,718

BARTD

Unknown

Over: INDUSTRIAL PARKWAY WEST

0.3 MI SW/O SR 238, Alameda, CA

Built 1968 ADT: 10,000

BARTD

Unknown

Over: DECOTO ROAD

0.3 MI W MILES RD, Alameda, CA

Built 1968 ADT: 25,984

UP RR, BNSF RY

Unknown

Over: D STREET

0.3 MI SW/O SR 238, Alameda, CA

Built 1965 ADT: 19,751

BARTD

Unknown

Over: D STREET

W OF ATHERTON ST, Alameda, CA

Built 1965 ADT: 19,751

UP RR & BNSF RY

Unknown

Over: GRIMMER BLVD

0.1 MI E/O WARM SPRGS BL, Alameda, CA

Built 1979 ADT: 12,300

UP RR

Unknown

Over: GRIMMER BLVD

0.1 MI E/O WARM SPRGS BL, Alameda, CA

Built 1979 ADT: 12,300

PEDESTRIAN WALKWAY

Unknown

Over: HEGENBERGER,ARROYO VIEJO

OVER HEGENBERGER RD, Alameda, CA

Built 1966 ADT: 5,000

Showing 301-350 of 27,040 bridges

Related

All states → | National rankings → | Understanding conditions → | Retired SD term explained →
Data sourced from the FHWA National Bridge Inventory (NBI), latest released cycle. See our methodology for details. Retrieved and formatted by PlainBridges.

Disclaimer: This information is provided for informational purposes only and does not constitute professional advice. Data is sourced from the FHWA National Bridge Inventory (NBI). Poor condition is an inspection-record category, not a closure or unsafe-to-cross designation. Consult the bridge owner for current status.

Understanding Bridge Conditions

How FHWA rates bridge condition on a 0-9 scale.

Check Your Daily Bridges

How to look up bridge condition data for bridges on your route.

Read our methodology — how this data is sourced, computed, and verified.

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.