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

PROSPECT BLVD

Unknown

Over: SECO ST

0.4MI S/O LINCOLN BLVD, Los Angeles, CA

Built 1989 ADT: 5,126

UP RR

Unknown

Over: MOTOR AVE

S. OF 10, Los Angeles, CA

Built 1964 ADT: 20,300

AZUSA AVE

Unknown

Over: VALLEY BL/ARENTH AV/SPRR

1.0MI N/O SR-60 FWY, Los Angeles, CA

Built 1967 ADT: 31,779

IRWINDALE AVE

Unknown

Over: METRO / AVIENDA PADILLA

100FT S/O I-10 FWY, Los Angeles, CA

Built 1968 ADT: 9,476

UP RR

Unknown

Over: VAN NUYS BLVD

0.5 MI S/O ROSCOE BLVD, Los Angeles, CA

Built 1966 ADT: 34,100

ATSF RR

Unknown

Over: BALDWIN AVE UP

AT I-210 FWY, Los Angeles, CA

Built 1971 ADT: 28,080

CABRITO ROAD

Unknown

Over: VAN NUYS BLVD

0.4 KM NORTH OF SATICOY, Los Angeles, CA

Built 1966 ADT: 34,100

MTA

Unknown

Over: SIERRA MADRE VILLA AV

300FT N/O COLORADO BLVD, Los Angeles, CA

Built 1972 ADT: 4,434

Metro Gold Line

Unknown

Over: MICHILLINDA AVE

0.1MI S/O FOOTHILL BLVD, Los Angeles, CA

Built 1971 ADT: 21,600

METROLINK

Unknown

Over: ATLANTIC BLVD UP

AT I-10 FWY, Los Angeles, CA

Built 1953 ADT: 43,993

SP/UP RR

Unknown

Over: SIERRA HWY

1.0MI S/O PALMDALE BLVD, Los Angeles, CA

Built 1967 ADT: 7,242

SPTCO

Unknown

Over: GAREY AVE UNDER SPTCO

0.3MI S/O HOLT AVE, Los Angeles, CA

Built 1963 ADT: 20,432

FIRST ST

Unknown

Over: GAREY AVE

0.3MI S/O HOLT AVE, Los Angeles, CA

Built 1963 ADT: 20,432

FOURTH ST

Unknown

Over: LORENA ST & BERNAL AVE

AT LORENA ST, Los Angeles, CA

Built 1928 ADT: 3,723

AVENUE OF THE STAR

Unknown

Over: OLYMPIC BLVD

AT OLYMPIC BLVD, Los Angeles, CA

Built 1963 ADT: 60,144

METRO

Unknown

Over: HILL AVE

0.2MI N/O WALNUT AVE, Los Angeles, CA

Built 1972 ADT: 26,463

METRO

Unknown

Over: SIERRA BONITA AVE

0.2MI N/O WALNUT AVE, Los Angeles, CA

Built 1972 ADT: 785

METRO

Unknown

Over: ALLEN AVE

0.1MI N/O FOOTHILL BLVD, Los Angeles, CA

Built 1976 ADT: 21,834

METRO

Unknown

Over: CRAIG AVE

0.2MI N/O FOOTHILL BLVD, Los Angeles, CA

Built 1976 ADT: 2,525

METRO

Unknown

Over: ALTADENA DR

0.5MI S/O ORANGE GROVE B, Los Angeles, CA

Built 1976 ADT: 16,840

METRO

Unknown

Over: SAN GABRIEL BOULEVARD

AT I-10 FWY, Los Angeles, CA

Built 1976 ADT: 8,802

METRO

Unknown

Over: SUNNYSLOPE AVE

0.1MI N/O FOOTHILL BLVD, Los Angeles, CA

Built 1976 ADT: 2,214

METRO

Unknown

Over: FOOTHILL BLVD

AT I-10 FWY, Los Angeles, CA

Built 1976 ADT: 21,012

METRO NB

Unknown

Over: FOOTHILL BLVD

0.3MI W/O AZUSA AVE, Los Angeles, CA

Built 1941 ADT: 15,554

ELBERON AVE

Unknown

Over: GAFFEY STREET

0.1 M W/O GAFFEY PLACE, Los Angeles, CA

Built 1936 ADT: 24,767

LB CTY COLLEGE POC

Unknown

Over: CARSON ST

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

Built 1956 ADT: 31,058

UP RR

Unknown

Over: PARAMOUNT BLVD

0.1MI N/O WHITTIER BLVD, Los Angeles, CA

Built 1972 ADT: 14,832

SPTCO

Unknown

Over: VALLEY BLVD UNDER SPTCO

0.1MI W/O SANTA ANITA AVE, Los Angeles, CA

Built 1973 ADT: 32,400

UPRR

Unknown

Over: AZUSA AVE

0.4MI N/O SR-60 FWY, Los Angeles, CA

Built 1971 ADT: 57,846

WHITT GRNWY TR POC

Unknown

Over: NORWALK BLVD

0.5MI N/O WHITTIER BLVD, Los Angeles, CA

Built 1966 ADT: 19,240

DOMINGUEZ SCH POC

Unknown

Over: SANTE FE AVE

0.8MI S/O DEL AMO BLVD, Los Angeles, CA

Built 1954 ADT: 18,746

UP RR

Unknown

Over: SANTA FE AVE

0.1MI N/O I-405 FWY, Los Angeles, CA

Built 1932 ADT: 18,746

UPRR

Unknown

Over: TELEGRAPH RD UP

0.2MI E/O PIONEER BLVD, Los Angeles, CA

Built 1952 ADT: 39,157

UPRR.

Unknown

Over: 87TH ST E

2.0MI N/O SR-138 HWY, Los Angeles, CA

Built 1967 ADT: 7,210

4TH ST

Unknown

Over: OCEAN PARK BLVD

0.5MI S/O PICO BLVD, Los Angeles, CA

Built 1965 ADT: 3,200

ATSF RR

Unknown

Over: ALOSTA AVE

2.0MI E/O GRAND AVE, Los Angeles, CA

Built 1929 ADT: 33,125

UP RR

Unknown

Over: RESEDA BLVD

0.1 M N/O PARTHENIA ST, Los Angeles, CA

Built 1967 ADT: 42,795

UP RR

Unknown

Over: PARTHENIA STREET

0.1 MI E/O RESEDA BLVD, Los Angeles, CA

Built 1967 ADT: 28,877

UP RR

Unknown

Over: SEPULVEDA BLVD

0.4 MI S/O ROSCOE BLVD, Los Angeles, CA

Built 1971 ADT: 32,419

SLAUSON AVE

Unknown

Over: LA CIENEGA BLVD UC

0.7MI N/O CENTINELA AVE, Los Angeles, CA

Built 1949 ADT: 86,288

REBECCA LOPEZ POC

Unknown

Over: VALLEY BOULEVARD

150FT W/O SR-57 FWY, Los Angeles, CA

Built 1974 ADT: 19,285

UP RR, METROLINK

Unknown

Over: LANKERSHIM BLVD

0.15 MI S/O SHERMAN WAY, Los Angeles, CA

Built 1938 ADT: 21,002

EL CAMINO COLEGE M

Unknown

Over: REDONDO BEACH BLVD

0.1MI W/O CRENSHAW BLVD, Los Angeles, CA

Built 1978 ADT: 26,624

ATSF RR

Unknown

Over: 190 TH ST UP

200FT E/O HAWTHORNE BLVD, Los Angeles, CA

Built 1979 ADT: 39,520

ATSF RR

Unknown

Over: NORMANDIE AVE UP

0.5MI S/O SEPULVEDA BL, Los Angeles, CA

Built 1923 ADT: 18,060

UNION PACIFIC RR

Unknown

Over: WILLOW ST

0.8MI W/O I-710 FWY, Los Angeles, CA

Built 1932 ADT: 21,836

SPTCO

Unknown

Over: VICTORY PLACE UP

0.3MI N/O BURBANK BLVD, Los Angeles, CA

Built 1932 ADT: 21,412

UNION PACIFIC RR

Unknown

Over: CHERRY AVE

0.5MI S/O S ST, Los Angeles, CA

Built 1932 ADT: 30,266

UNION PACIFIC R R

Unknown

Over: ATLANTIC AVE UP

0.1MI N/O DEL AMO BLVD, Los Angeles, CA

Built 1932 ADT: 23,108

UNION PACIFIC RR

Unknown

Over: LONG BEACH BLVD UP

0.2MI S/O DEL AMO BLVD, Los Angeles, CA

Built 1932 ADT: 22,048

Showing 2,851-2,900 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.