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

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 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

California45.2%48.3%GoodFairPoor (structurally 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.

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 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

UP RR & BARTD

Unknown

Over: STATE ROUTE 238

04-ALA-238-2.19-FMT, Alameda, CA

Built 1921 ADT: 112,000

INTERSTATE 80

Unknown

Over: POWELL STREET

04-ALA-080-3.79-EMV, Alameda, CA

Built 1954 ADT: 30,000

UNIVERSITY AVE

Unknown

Over: I 80, EB OFFRMP, 4 &2 ST

04-ALA-080-5.82-BER, Alameda, CA

Built 1939 ADT: 6,500

INTERSTATE 580 EB

Unknown

Over: GREENVILLE ROAD

04-ALA-580-R8.29, Alameda, CA

Built 1969 ADT: 2,000

INTERSTATE 580 WB

Unknown

Over: GREENVILLE ROAD

04-ALA-580-R8.29, Alameda, CA

Built 1969 ADT: 2,000

UP RR,BNSF,AMTRAK

Unknown

Over: STATE ROUTE 84

04-ALA-084-10.71-FMT, Alameda, CA

Built 1937 ADT: 22,400

UP RR SPUR

Unknown

Over: STATE ROUTE 84

04-ALA-084-12.10-FMT, Alameda, CA

Built 1906 ADT: 14,850

UP RR SPUR

Unknown

Over: STATE ROUTE 84

04-ALA-084-13.03, Alameda, CA

Built 1932 ADT: 14,850

INTERSTATE 880

Unknown

Over: UP RR SPUR,FRUITVALE AVE

04-ALA-880-28.24-OAK, Alameda, CA

Built 1947 ADT: 19,147

UPRR, E84-MAIN OFF

Unknown

Over: STATE ROUTE 84

04-ALA-084-16.93, Alameda, CA

Built 1941 ADT: 13,500

INTERSTATE 80 WB

Unknown

Over: UP,BNSF,AMTRAK,E80-W580

04-ALA-080-R7.20-ALB, Alameda, CA

Built 1960 ADT: 7,000

INTERSTATE 80 EB

Unknown

Over: UP RR,BNSF,AMTRAK,I 580

04-ALA-080-R7.20-ALB, Alameda, CA

Built 1999 ADT: 7,000

UP RR

Unknown

Over: STATE ROUTE 84

04-ALA-084-10.63-FMT, Alameda, CA

Built 1937 ADT: 22,400

UP RR,BNSF,AMTRAK

Unknown

Over: STATE ROUTE 13

04-ALA-013-13.69-BER, Alameda, CA

Built 1935 ADT: 46,400

E&W80-E580 CONNCTR

Unknown

Over: UP RR,BNSF RY,AMTRAK,ETC

04-ALA-580-46.50L-OAK, Alameda, CA

Built 1955 ADT: 5,000

W580-E&W80 CONNCTR

Unknown

Over: UP RR,BNSF RY,AMTRAK,ETC

04-ALA-580-46.50R-OAK, Alameda, CA

Built 1935 ADT: 3,000

HEGENBERGER RD WB

Unknown

Over: INTERSTATE 880

04-ALA-880-25.50-OAK, Alameda, CA

Built 1996 ADT: 199,000

HEGENBERGER RD EB

Unknown

Over: INTERSTATE 880

04-ALA-880-25.49-OAK, Alameda, CA

Built 1976 ADT: 199,000

UP RR & AMTRAK

Unknown

Over: ST RTE 92 (JACKSON ST)

04-ALA-092-7.26-HAY, Alameda, CA

Built 1962 ADT: 57,000

BNSF,UP RR, AMTRAK

Unknown

Over: ST RTE 92 (JACKSON ST)

04-ALA-092-8.02-HAY, Alameda, CA

Built 1962 ADT: 57,000

STATE ROUTE 13 SB

Unknown

Over: CARSON STREET

04-ALA-013-5.01-OAK, Alameda, CA

Built 1966 ADT: 5,000

STATE ROUTE 13 NB

Unknown

Over: CARSON STREET

04-ALA-013-5.01-OAK, Alameda, CA

Built 1966 ADT: 5,000

98TH AVE

Unknown

Over: INTERSTATE 880

04-ALA-880-24.74-OAK, Alameda, CA

Built 1998 ADT: 199,000

SR 123 (SAN PABLO)

Unknown

Over: SR 123 (MACARTHUR BLVD)

04-ALA-123-0.22-EMV, Alameda, CA

Built 1936 ADT: 24,350

UP RR, BNSF, & ACE

Unknown

Over: INTERSTATE 580 EB

04-ALA-580-R3.99L, Alameda, CA

Built 1938 ADT: 82,000

INTERSTATE 80

Unknown

Over: GILMAN STREET

04-ALA-080-6.62-BER, Alameda, CA

Built 1955 ADT: 18,400

INTERSTATE 580

Unknown

Over: LAKESHORE BL & GRAND AVE

04-ALA-580-43.48-OAK, Alameda, CA

Built 1962 ADT: 3,500

BROADWAY

Unknown

Over: GOLDEN GATE AVE

04-ALA-024-R4.43-OAK, Alameda, CA

Built 1934 ADT: 650

16TH AVENUE

Unknown

Over: I 880,E 12TH ST,BARTD,RR

04-ALA-880-29.69-OAK, Alameda, CA

Built 1997 ADT: 225,000

REDWOOD ROAD

Unknown

Over: STATE ROUTE 13

04-ALA-013-5.39-OAK, Alameda, CA

Built 1966 ADT: 78,000

INTERSTATE 580

Unknown

Over: NORTH LIVERMORE AVE

04-ALA-580-12.53, Alameda, CA

Built 1972 ADT: 2,000

PARK BLVD

Unknown

Over: STATE ROUTE 13

04-ALA-013-7.40-OAK, Alameda, CA

Built 1956 ADT: 110,000

LA SALLE AVE

Unknown

Over: STATE ROUTE 13

04-ALA-013-7.76-OAK, Alameda, CA

Built 1956 ADT: 114,000

PEDESTRIAN WALKWAY

Unknown

Over: STATE ROUTE 13

04-ALA-013-4.85-OAK, Alameda, CA

Built 1966 ADT: 94,000

STATE ROUTE 13

Unknown

Over: BROADWAY TERRACE

04-ALA-013-9.07-OAK, Alameda, CA

Built 1951 ADT: 14,422

WASHINGTON AVE

Unknown

Over: INTERSTATE 880

04-ALA-880-20.82-SLN, Alameda, CA

Built 1952 ADT: 219,000

WILLIAMS ST

Unknown

Over: INTERSTATE 880

04-ALA-880-23.12-SLN, Alameda, CA

Built 1994 ADT: 217,000

INTERSTATE 880

Unknown

Over: HESPERIAN BLVD

04-ALA-880-20.16, Alameda, CA

Built 1991 ADT: 25,000

INTERSTATE 880

Unknown

Over: S880-S238 CONNECTOR RAMP

04-ALA-880-20.68-SLN, Alameda, CA

Built 1952 ADT: 29,000

N880-WASHINGTON AV

Unknown

Over: N880-N238 CONNECTOR

04-ALA-880-20.78-SLN, Alameda, CA

Built 1994 ADT: 29,000

PASEO GRANDE RD

Unknown

Over: I 880, VIA RODRIQUEZ

04-ALA-880-19.76, Alameda, CA

Built 1992 ADT: 250,000

INTERSTATE 880

Unknown

Over: LEWELLING BLVD

04-ALA-880-20.32, Alameda, CA

Built 1953 ADT: 10,000

N880-E238 CONNECTR

Unknown

Over: LEWELLING BLVD

04-ALA-880-20.32, Alameda, CA

Built 1978 ADT: 10,000

INTERSTATE 880

Unknown

Over: A STREET

04-ALA-880-18.35-HAY, Alameda, CA

Built 1952 ADT: 15,000

HACIENDA AVE

Unknown

Over: INTERSTATE 880

04-ALA-880-19.27, Alameda, CA

Built 1992 ADT: 250,000

WINTON AVE

Unknown

Over: INTERSTATE 880

04-ALA-880-17.60-HAY, Alameda, CA

Built 1968 ADT: 250,000

UP RR, BNSF RY

Unknown

Over: STATE ROUTE 262

04-ALA-077-0.16-OAK, Alameda, CA

Built 1954 ADT: 21,500

W80-S13 CONNECTOR

Unknown

Over: INTERSTATE 80

04-ALA-080-4.45-EMV, Alameda, CA

Built 1954 ADT: 239,000

N13-W80 CONNECTOR

Unknown

Over: I 80 & W80-S13 CONNECTOR

04-ALA-013-13.92L-BER, Alameda, CA

Built 1955 ADT: 239,000

PEDESTRIAN WALKWAY

Unknown

Over: INTERSTATE 580

04-ALA-580-30.09, Alameda, CA

Built 1991 ADT: 207,000

Showing 1-50 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.

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.