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

ROUTE 103

Good

Over: GRADED EARTH GROUND

07-LA-103-0.01-LA, Los Angeles, CA

Built 2016 Load: 32.4 t ADT: 14,400

INTERSTATE 5

Good

Over: N.FK COYOTE CREEK, BIKE

07-LA-005-1.48-SFSP, Los Angeles, CA

Built 2015 Load: 32.4 t ADT: 164,000

ROUTE 5

Good

Over: COYOTE CREEK

07-LA-005-0.34-LMRD, Los Angeles, CA

Built 2022 Load: 32.4 t ADT: 169,000

S/B OFF-RAMP

Good

Over: ROUTE 5

07-LA-005-1.23-SFSP, Los Angeles, CA

Built 2022 Load: 32.4 t ADT: 3,280

S/B ON-RAMP

Good

Over: ROUTE 5

07-LA-005-1.14-LMRD, Los Angeles, CA

Built 2022 Load: 32.4 t ADT: 3,380

SR 134,RIVERSID DR

Good

Over: BUENA VISTA PARK CHANNEL

07-LA-134-2.82-BRB, Los Angeles, CA

Built 1959 Load: 32.4 t ADT: 227,000

SB INTERSTATE 5

Good

Over: BURIED BOX CULVERT

07-LA-005-3.98-NWK, Los Angeles, CA

Built 2015 Load: 32.4 t ADT: 87,500

ROUTE 5

Good

Over: STOUGH CANYON

07-LA-005-29.78, Los Angeles, CA

Built 2021 Load: 32.4 t ADT: 239,000

INTERSTATE 5

Good

Over: BURBANK WESTERN CHANNEL

07-LA-005-30.08-BRB, Los Angeles, CA

Built 2019 Load: 32.4 t ADT: 23,900

SB 101 ONRAMP

Good

Over: GRADED EARTH

07-LA-101-9.61-LA, Los Angeles, CA

Built 2016 Load: 32.4 t ADT: 20,000

STATE ROUTE 39

Good

Over: SAN GABRIEL CANYON

07-LA-039-21.67, Los Angeles, CA

Built 2016 Load: 32.4 t ADT: 850

BELLFLOWER BLVD

Good

Over: BOUTON CRK

0.1MI S/O ATHERTON ST, Los Angeles, CA

Built 1955 Load: 32.4 t ADT: 24,698

DALY ST

Good

Over: UP RR,AMTRAK,ALHAMBRA BL

0.2 MI S/O MAIN STREET, Los Angeles, CA

Built 1982 Load: 32.4 t ADT: 16,976

AGOURA RD

Good

Over: MEDEA CRK

0.3MI E/O KANAN RD, Los Angeles, CA

Built 1920 Load: 32.4 t ADT: 8,910

OLIVE AVE FRNTGE R

Good

Over: BURBANK WESTERN CHAN

0.1MI W/O I-5 FWY, Los Angeles, CA

Built 1949 Load: 32.4 t ADT: 510

ANAHEIM RD

Good

Over: LOS CERRITOS DRN

300FT W/O STUDEBAKER RD, Los Angeles, CA

Built 1984 Load: 32.4 t ADT: 11,330

DEL AMO BLVD

Good

Over: CLARK AVE DRN

0.6MI E/O LAKEWOOD BLVD, Los Angeles, CA

Built 1977 Load: 32.4 t ADT: 21,081

WORKMAN MILL RD

Good

Over: SAN JOSE CRK

0.3MI N/O SR-60 FWY, Los Angeles, CA

Built 1952 Load: 32.4 t ADT: 30,070

FIRESTONE BLVD

Good

Over: LONGVEST DRN

0.8MI E/O I-605 FWY, Los Angeles, CA

Built 1954 Load: 32.4 t ADT: 25,262

CENTINELA AVE

Good

Over: CENTINELLA CRK CHAN

100FT E/O SR-405 FWY, Los Angeles, CA

Built 1963 Load: 32.4 t ADT: 26,250

LAUREL CANYON BLVD

Good

Over: PACOIMA WASH

BTWN PAXTN ST/CHAMBLN ST, Los Angeles, CA

Built 1954 Load: 32.4 t ADT: 33,235

ALOSTA AVE

Good

Over: LITTLE DALTON WASH

0.8MI E/O AZUSA AVE, Los Angeles, CA

Built 1960 Load: 32.4 t ADT: 11,900

AVE I

Good

Over: AMARGOSA DRN

200FT E/O SR-14 FWY, Los Angeles, CA

Built 1968 Load: 32.4 t ADT: 25,064

DEVONSHIRE ST

Good

Over: BROWNS CANYON WASH

AT CANOGA AVE, Los Angeles, CA

Built 1974 Load: 32.4 t ADT: 33,672

ARROW HWY

Good

Over: MARSHALL CYN WASH

1.2MI W/O WHITE AVE, Los Angeles, CA

Built 1967 Load: 32.4 t ADT: 22,880

LEFFINGWELL RD

Good

Over: COYOTE CRK NF

0.3MI N/O IMPERIAL HWY, Los Angeles, CA

Built 1961 Load: 32.4 t ADT: 19,740

SOLEDAD CYN RD

Good

Over: SANTA CLARA RIV

4.0MI E/O BOUQUET CYN RD, Los Angeles, CA

Built 1973 Load: 32.4 t ADT: 43,000

SHERMAN WAY

Good

Over: BROWNS CREEK

0.4 M E/O DE SOTO AVE, Los Angeles, CA

Built 1971 Load: 32.4 t ADT: 32,000

BOUQUET CYN RD

Good

Over: PLUM CYN CHAN

3.0MI N/O SOLEDAD CYN RD, Los Angeles, CA

Built 1967 Load: 32.4 t ADT: 27,396

SOLEDAD CYN RD

Good

Over: MAHER CYN CR

3.3MI E/O AGUA DULCE CYN, Los Angeles, CA

Built 1949 Load: 32.4 t ADT: 2,550

SANTA ANITA AVE

Good

Over: SIERRA MADRE WASH

0.8MI N/O I-210 FWY, Los Angeles, CA

Built 1960 Load: 32.4 t ADT: 10,506

TERRA BELLA ST

Good

Over: PACOIMA DIVERSION CHAN

0.1 MI WEST OF ARLETA AVE, Los Angeles, CA

Built 1954 Load: 32.4 t ADT: 14,256

BREA CYN RD

Good

Over: DIAMOND BAR CRK

0.2MI N/O LYCOMING ST, Los Angeles, CA

Built 1980 Load: 32.4 t ADT: 16,135

LA PUENTE RD

Good

Over: LEMON CRK

200FT E/O LEMON AVE, Los Angeles, CA

Built 1981 Load: 32.4 t ADT: 5,871

LEMON AVE

Good

Over: LEMON CRK

0.4MI N/O VALLEY BLVD, Los Angeles, CA

Built 1976 Load: 32.4 t ADT: 9,064

VALYERMO RD

Good

Over: PALLETT CRK

0.1MI E/O PALLETT CR RD, Los Angeles, CA

Built 1926 Load: 32.4 t ADT: 1,530

DEL AMO BLVD

Good

Over: DOWNEY AVE DRN

0.4MI W/O LAKEWOOD BLVD, Los Angeles, CA

Built 1953 Load: 32.4 t ADT: 29,969

WARDLOW RD

Good

Over: COYOTE CRK

0.8MI E/O I-605 FWY, Los Angeles, CA

Built 1955 Load: 32.4 t ADT: 16,748

DUDLEY ST

Good

Over: SAN JOSE CRK

0.5MI N/O HOLT AVE, Los Angeles, CA

Built 1957 Load: 32.4 t ADT: 7,200

BADILLO ST

Good

Over: CHARTER OAK WASH

0.1MI W/O BARRANCA AVE, Los Angeles, CA

Built 1965 Load: 32.4 t ADT: 19,784

MARINE AVE

Good

Over: DOMINGUEZ CHAN

0.2MI W/O CRENSHAW BL, Los Angeles, CA

Built 1961 Load: 32.4 t ADT: 19,623

MANHATTAN BCH BLVD

Good

Over: DOMINGUEZ CHAN

0.5MI W/O CRENSHAW BLVD, Los Angeles, CA

Built 1961 Load: 32.4 t ADT: 21,942

HARDWICK ST

Good

Over: DOWNEY AVE DRN

0.5MI W/O LAKEWOOD BLVD, Los Angeles, CA

Built 1959 Load: 32.4 t ADT: 4,379

STUDEBAKER RD

Good

Over: GRIDLEY DRN

0.3MI S/O DEL AMO BLVD, Los Angeles, CA

Built 1962 Load: 32.4 t ADT: 28,629

FOOTHILL BLVD

Good

Over: EATON WASH

E/O SAN GABRIEL BLVD, Los Angeles, CA

Built 1972 Load: 32.4 t ADT: 21,012

MONTROSE AVE

Good

Over: PICKENS CYN CHAN

0.2MI W/O BRIGGS AVE, Los Angeles, CA

Built 1936 Load: 32.4 t ADT: 8,273

VERMONT/TORRANCE

Good

Over: TORRANCE LATERAL CHAN

0.8MI N/O CARSON ST, Los Angeles, CA

Built 1961 Load: 32.4 t ADT: 30,680

KANAN RD

Good

Over: TRIUNFO CR

3.0MI S/O US-101 FWY, Los Angeles, CA

Built 1962 Load: 32.4 t ADT: 6,592

SANTA GERTRUDES

Good

Over: LA MIRADA CHAN

0.4MI N/O IMPERIAL HWY, Los Angeles, CA

Built 1962 Load: 32.4 t ADT: 17,544

BONITA AVE

Good

Over: THOMPSON CRK

0.5MI W/O GAREY AVE, Los Angeles, CA

Built 1965 Load: 32.4 t ADT: 10,200

Showing 20,951-21,000 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.