State profile · Below national median SD

California bridge safety

Condition ratings, load ratings, and structural-deficiency data for every public highway bridge in California — drawn straight from the FHWA National Bridge Inventory.

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

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 rated 0-4

Structurally Deficient

4.6%

1,244 bridges flagged for repair priority

-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 — Structurally deficient share 15.3%
National avg

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

Condition Distribution

Bridge inventory deck-condition mix — California (FHWA NBI)

California32.45931952662722%34.67455621301775%GoodFairPoorStructurally Deficient
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 on the structurally deficient leaderboard (lower share = better)

States are ranked by share of bridges flagged structurally deficient — the FHWA classification for any span where deck, superstructure, or substructure carries a condition rating of 4 or below. Lower percentages indicate stronger maintenance funding and inspection follow-through. States here sit immediately above and below California on the same metric.

39

Ohio

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

34

New Jersey

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

06

California

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

05

Arkansas

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

53

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 composite NBI rating. Each is inspected at least every 24 months.

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

Structurally Deficient

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

STATE ROUTE 84 EB

Unknown

Over: NEWARK BLVD

04-ALA-084-R4.88-NWK, Alameda, CA

Built 1983 ADT: 200,005

LAKE BLVD

Unknown

Over: STATE ROUTE 84

04-ALA-084-R5.39-NWK, Alameda, CA

Built 1983 ADT: 70,000

S260-WILMA CHAN WY

Unknown

Over: STATE ROUTE 260 NB

04-ALA-260-R0.86L-ALA, Alameda, CA

Built 1985 ADT: 16,100

PASEO PADRE PKWY

Unknown

Over: INTERSTATE 880

04-ALA-880-10.93-FMT, Alameda, CA

Built 1981 ADT: 220,000

W LAS POSITAS BLVD

Unknown

Over: I 680, SO SAN RAMON CRK

04-ALA-680-R18.40-PLE, Alameda, CA

Built 1984 ADT: 146,000

DUMBARTON TL POC

Unknown

Over: STATE ROUTE 84

04-ALA-084-R3.21-FMT, Alameda, CA

Built 1986 ADT: 63,000

SERVICE ACCESS RD

Unknown

Over: STATE ROUTE 24 WB

04-ALA-024-R5.85-OAK, Alameda, CA

Built 1964 ADT: 155,000

SERVICE ACCESS RD

Unknown

Over: STATE ROUTE 24

04-ALA-024-R5.97-OAK, Alameda, CA

Built 1964 ADT: 154,000

W PORTAL BLDG BRDG

Unknown

Over: STATE ROUTE 24 WB

04-ALA-024-R5.89-OAK, Alameda, CA

Built 1964 ADT: 155,000

E580-STROBRIDGE AV

Unknown

Over: N238-E580 CONNECTOR RAMP

04-ALA-580-R30.80, Alameda, CA

Built 1988 ADT: 6,600

S238-E580 CONNECTR

Unknown

Over: SR 238 NB,CASTRO ON RAMP

04-ALA-238-R14.58, Alameda, CA

Built 1988 ADT: 5,000

W580-N238 CONNECTR

Unknown

Over: INTERSTATE 238 NB

04-ALA-580-R30.80, Alameda, CA

Built 1991 ADT: 8,600

N238-W580 CONNECTR

Unknown

Over: S238-E580,W580-N238,N238

04-ALA-238-R14.49, Alameda, CA

Built 1988 ADT: 6,000

METERING LIGHTS

Unknown

Over: INTERSTATE 80 WB

04-ALA-080-1.80-OAK, Alameda, CA

Built 1974 ADT: 266,000

N238-S880 CONNECTR

Unknown

Over: I 880,I 238,UP RR,AMTRAK

04-ALA-238-16.03-SLN, Alameda, CA

Built 1991 ADT: 119,000

HOPYARD DOUGHERTY

Unknown

Over: INTERSTATE 580

04-ALA-580-19.86-PLE, Alameda, CA

Built 1988 ADT: 248,000

FAIRWAY DRIVE

Unknown

Over: INTERSTATE 880

04-ALA-880-22.40-SLN, Alameda, CA

Built 1994 ADT: 217,000

HACIENDA DR

Unknown

Over: INTERSTATE 580

04-ALA-580-18.82-PLE, Alameda, CA

Built 1993 ADT: 241,000

SANTA RITA RD

Unknown

Over: INTERSTATE 580

04-ALA-580-17.96-PLE, Alameda, CA

Built 1993 ADT: 241,000

STEVENSON BLVD

Unknown

Over: INTERSTATE 880

04-ALA-880-6.24-FMT, Alameda, CA

Built 1997 ADT: 187,000

W80 HOV-TOLL PLAZA

Unknown

Over: INTERSTATE 80 WB

04-ALA-080-3.14-EMV, Alameda, CA

Built 1998 ADT: 125,000

STATE ROUTE 13 SB

Unknown

Over: N13-W24 CONNECTOR RAMP

04-ALA-013-R9.69-OAK, Alameda, CA

Built 1996 ADT: 50,000

INTERSTATE 880 SB

Unknown

Over: 7TH STREET

04-ALA-880-R33.50-OAK, Alameda, CA

Built 1997 ADT: 876

INTERSTATE 880 NB

Unknown

Over: 7TH STREET

04-ALA-880-R33.50-OAK, Alameda, CA

Built 1997 ADT: 876

INTERSTATE 880 SB

Unknown

Over: UP RR,BNSF RY,AMTRAK,POR

04-ALA-880-R34.50L-OAK, Alameda, CA

Built 1998 ADT: 288,000

INTERSTATE 880 NB

Unknown

Over: UP RR,BNSF RY,AMTRAK,POR

04-ALA-880-R34.00R-OAK, Alameda, CA

Built 1998 ADT: 165,000

I 80-I 880 CONN

Unknown

Over: SB 880, I 80, W GRAND

04-ALA-080-2.44-OAK, Alameda, CA

Built 1996 ADT: 10,000

INTERSTATE 880 SB

Unknown

Over: ADELINE, BARTD,UNION,5TH

04-ALA-880-R32.20-OAK, Alameda, CA

Built 1998 ADT: 7,895

INTERSTATE 880 NB

Unknown

Over: ADELINE, BARTD,UNION,5TH

04-ALA-880-R32.20-OAK, Alameda, CA

Built 1998 ADT: 7,895

FREMONT BOULEVARD

Unknown

Over: INTERSTATE 880

04-ALA-880-11.50-FMT, Alameda, CA

Built 1998 ADT: 198,000

BARTD

Unknown

Over: STATE ROUTE 185

04-ALA-185-1.99-SLN, Alameda, CA

Built 1986 ADT: 18,000

W80-MARITIME OFFRP

Unknown

Over: EB I-80,WB I-80,SB I-880

04-ALA-080-2.30-OAK, Alameda, CA

Built 1995 ADT: 52,000

S680-E580 CONN SEP

Unknown

Over: I-680, I-580, DUBLIN BL

04-ALA-680-R20.72-PLE, Alameda, CA

Built 2001 ADT: 32,000

PEDESTRIAN WALKWAY

Unknown

Over: INTERSTATE 880

04-ALA-880-24.90-OAK, Alameda, CA

Built 1998 ADT: 199,000

ALVARADO-NILES RD

Unknown

Over: INTERSTATE 880

04-ALA-880-13.00, Alameda, CA

Built 1998 ADT: 245,000

N680-E580 CONN

Unknown

Over: E580&S680 OFF, SAN RAMON

04-ALA-680-R20.01-PLE, Alameda, CA

Built 2001 ADT: 999

S680-W580 CONN

Unknown

Over: ST PATRICK-S680 ON RAMP

04-ALA-680-R20.22-PLE, Alameda, CA

Built 2001 ADT: 750

BARTD

Unknown

Over: INTERSTATE 880

04-ALA-880-R33.48-OAK, Alameda, CA

Built 1995 ADT: 126,000

PEDESTRIANS

Unknown

Over: STATE ROUTE 92

04-ALA-092-R3.88-HAY, Alameda, CA

Built 2002 ADT: 86,000

PEDESTRIAN & BIKE

Unknown

Over: INTERSTATE 880

04-ALA-880-16.03-HAY, Alameda, CA

Built 2010 ADT: 211,000

STATE ROUTE 61

Unknown

Over: AIRPORT DRIVE

04-ALA-061-15.90-OAK, Alameda, CA

Built 2001 ADT: 12,000

PEDESTRIAN WALKWAY

Unknown

Over: I-80, WEST FRONTAGE RD

04-ALA-080-5.70-BER, Alameda, CA

Built 2002 ADT: 239,000

BARTD AERIAL

Unknown

Over: 52ND ST WB-W24 ON-RAMP

04-ALA-024-R2.80-OAK, Alameda, CA

Built 1968 ADT: 600

W262-S880 CONNECTR

Unknown

Over: I 880, WARREN AVE, RAMPS

04-ALA-880-2.48-FMT, Alameda, CA

Built 2008 ADT: 153,000

S880-E262 CONNECTR

Unknown

Over: INTERSTATE 880

04-ALA-880-2.55-FMT, Alameda, CA

Built 2009 ADT: 170,000

WARREN AVENUE

Unknown

Over: INTERSTATE 880

04-ALA-880-2.51-FMT, Alameda, CA

Built 2009 ADT: 170,000

WARREN AVENUE

Unknown

Over: N880-E262 CONNECTOR RAMP

04-ALA-880-2.29-FMT, Alameda, CA

Built 2009 ADT: 40,000

KATO ROAD

Unknown

Over: ST RTE 262 (MISSION BL)

04-ALA-262-R0.28, Alameda, CA

Built 2008 ADT: 76,000

N880-W92 CONNECTOR

Unknown

Over: E 92-N 880 CONNECTOR

04-ALA-880-16.79-HAY, Alameda, CA

Built 2011 ADT: 50,000

STATE ROUTE 92

Unknown

Over: I 880, E92-N880,S880-E92

04-ALA-092-6.35-HAY, Alameda, CA

Built 2011 ADT: 106,000

Showing 251-300 of 27,040 bridges

Related

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

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). A "structurally deficient" rating is a repair-priority signal, not a closure or unsafe-to-cross designation. Consult a qualified civil engineer before making decisions based on this data.

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.