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)

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.

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

CHATEAU RD

Good

Over: UNNAMED WASH

0.2MI N/O US-101 FWY, Los Angeles, CA

Built 1940 Load: 19.8 t ADT: 510

CENTER VALLEY RD

Good

Over: BAECHTEL CREEK

0.8 MI E SH 101, Mendocino, CA

Built 1953 Load: 19.8 t ADT: 1,166

MODJESKA CANYON RD

Good

Over: SANTIAGO CREEK

.4 MI. E/O MODJESKA G RD, Orange, CA

Built 1947 Load: 19.8 t ADT: 1,000

CALLE DEL OSO ORO

Good

Over: MURRIETA CREEK

0.5 M SW/O WASHINGTON AV, Riverside, CA

Built 1998 Load: 19.8 t ADT: 1,152

US HIGHWAY 101 NB

Good

Over: ARROYO GRANDE CREEK

05-SLO-101-13.02-ARGD, San Luis Obispo, CA

Built 1959 Load: 19.8 t ADT: 24,000

VALERIO ST

Good

Over: MISSION CREEK

AT CASTILLO ST, Santa Barbara, CA

Built 1968 Load: 19.8 t ADT: 900

JUNIPERO STREET

Good

Over: MISSION CREEK

WEST OF ALAMAR AVE, Santa Barbara, CA

Built 1972 Load: 19.8 t ADT: 7,500

CURTNER AVE

Good

Over: GUADALUPE RIVER

NEAR ALMADEN RD, Santa Clara, CA

Built 1957 Load: 19.8 t ADT: 26,900

ALDERCROFT HTS RD

Good

Over: LOS GATOS CREEK

0.4 MI E/O OLD SC HWY, Santa Clara, CA

Built 1952 Load: 19.8 t ADT: 1,070

COLEMAN AVE

Good

Over: UPRR,BNSF,AMTRAK,BASSETT

UP TRACKS NEAR MARKET ST, Santa Clara, CA

Built 1961 Load: 19.8 t ADT: 26,350

HEDDING ST

Good

Over: CALTRAIN, UP RR,STOCKTON

0.4 MI N/E OF SH 92, Santa Clara, CA

Built 1959 Load: 19.8 t ADT: 15,600

NO DATA ENTERED

Good

Over: N. YUBA RIVER

NO DATA ENTERED, Sierra, CA

Built 1978 Load: 19.8 t ADT: 50

STATE ROUTE 12

Good

Over: SANTA ROSA CREEK

04-SON-012-T18.51-SRO, Sonoma, CA

Built 1956 Load: 19.8 t ADT: 40,750

LEVERONI RD

Good

Over: FELDER CREEK

1.45 MI W OF SR 12, Sonoma, CA

Built 1972 Load: 19.8 t ADT: 6,000

SHEARWATER DRIVE

Good

Over: SALADO CREEK

AT AMERICAN EAGLE DRIVE, Stanislaus, CA

Built 2006 Load: 19.8 t ADT: 1,000

AVE 368

Good

Over: COTTONWOOD CREEK

0.2 MI W OF RD 108, Tulare, CA

Built 1981 Load: 19.8 t ADT: 275

INTERSTATE 580 WB

Good

Over: UP RR, BNSF RY, & ACE

04-ALA-580-R8.00, Alameda, CA

Built 1938 Load: 20.1 t ADT: 88,000

STATE ROUTE 88

Good

Over: ROCKY CREEK

10-AMA-088-16.66, Amador, CA

Built 1942 Load: 20.1 t ADT: 22,300

BANCROFT RD

Good

Over: WALNUT CREEK

0.1 MI N DAVID ST, Contra Costa, CA

Built 1958 Load: 20.1 t ADT: 19,300

ORINDA WAY

Good

Over: SAN PABLO CREEK

AT CAMINO PABLO, Contra Costa, CA

Built 1920 Load: 20.1 t ADT: 6,000

ROAD 62

Good

Over: COLUSA DRAIN

0.1 MI E RD W, Glenn, CA

Built 1960 Load: 20.1 t ADT: 31

ROAD 99W

Good

Over: HAMBRIGHT CREEK

0.9 MI N OF S.H. 32, Glenn, CA

Built 1936 Load: 20.1 t ADT: 3,301

O&M Servicel Road

Good

Over: Un Named Wash Overchute

8.5 miles NE of Yuma, Imperial, CA

Built 1935 Load: 20.1 t ADT: 50

U.S. HIGHWAY 101

Good

Over: VENDOME STREET

07-LA-101-3.63-LA, Los Angeles, CA

Built 1949 Load: 20.1 t ADT: 265,000

SOLEDAD CYN RD

Good

Over: NELSON CYN WASH

3MI E/O AGUA DULCE CYN RD, Los Angeles, CA

Built 1949 Load: 20.1 t ADT: 2,550

BROOKTREE ROAD

Good

Over: RUSTIC CANYON CHANNEL

BWEEN RANCH LN & HIGHTREE, Los Angeles, CA

Built 1996 Load: 20.1 t ADT: 300

REDWOOD BLVD

Good

Over: NOVATO CREEK

0.6 M N ROWLAND BL, Marin, CA

Built 1929 Load: 20.1 t ADT: 9,103

FALLON-TWO ROCK RD

Good

Over: ESTERO DE SAN ANTONIO

0.02 MI E SR 1, Marin, CA

Built 1932 Load: 20.1 t ADT: 249

JEFFREY ROAD

Good

Over: WOODBRIDGE BICYCLE TRAIL

0.1 MI S BARRANCA PKWY, Orange, CA

Built 1957 Load: 20.1 t ADT: 43,700

H STREET

Good

Over: AMERICAN RIVER

0.4 MI E OF CARLSON DR, Sacramento, CA

Built 1932 Load: 20.1 t ADT: 36,719

MARIPOSA ROAD

Good

Over: NORTH LITTLE JOHNS CREEK

0.5 MI W AUSTIN RD, San Joaquin, CA

Built 1934 Load: 20.1 t ADT: 3,500

STATE ROUTE 46

Good

Over: JACK CREEK (PSO RBLS CR)

05-SLO-046-R15.85, San Luis Obispo, CA

Built 1969 Load: 20.1 t ADT: 4,600

RD 252

Good

Over: LEWIS CREEK

0.25 MI S OF AVE 220, Tulare, CA

Built 1962 Load: 20.1 t ADT: 50

C.R. 90

Good

Over: SOUTH FORK WILLOW SLOUGH

0.37 MI S OF S.H. 16, Yolo, CA

Built 1959 Load: 20.1 t ADT: 234

JAMES DONLON BLVD

Good

Over: CONTRA COSTA CANAL

1.5 MI E SOMERVILLE RD, Contra Costa, CA

Built 1950 Load: 20.4 t ADT: 1,873

VAN NESS STREET

Good

Over: WILDCAT CREEK

0.1 MI S SAN PABLO AVE, Contra Costa, CA

Built 1960 Load: 20.4 t ADT: 13,320

11N46

Good

Over: SO. FORK AMER. RIVER

NO DATA ENTERED, El Dorado, CA

Built 1960 Load: 20.4 t ADT: 50

STATE ROUTE 299

Good

Over: NORTH FORK MAD RIVER

01-HUM-299-R11.02, Humboldt, CA

Built 1969 Load: 20.4 t ADT: 3,500

STATE ROUTE 86 SB

Good

Over: ANZA DITCH

11-IMP-086-57.82, Imperial, CA

Built 1989 Load: 20.4 t ADT: 7,300

STATE ROUTE 58

Good

Over: WEST SIDE CANAL

06-KER-058-24.08, Kern, CA

Built 1982 Load: 20.4 t ADT: 9,000

INTERSTATE 405

Good

Over: MONTANA AVE

07-LA-405-32.50-LA, Los Angeles, CA

Built 1956 Load: 20.4 t ADT: 283,000

INTERSTATE 710

Good

Over: DEL AMO BLVD

07-LA-710-10.82-LBCH, Los Angeles, CA

Built 1953 Load: 20.4 t ADT: 190,000

STATE ROUTE 91

Good

Over: BIXBY AVE

07-LA-091-R15.87-BFL, Los Angeles, CA

Built 1968 Load: 20.4 t ADT: 242,000

INTERSTATE 605 SB

Good

Over: SANTA FE FLOOD BASIN

07-LA-605-25.09-IRW, Los Angeles, CA

Built 1970 Load: 20.4 t ADT: 67,000

EVERGREEN AVE

Good

Over: SAWPIT WASH

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

Built 1968 Load: 20.4 t ADT: 14,139

COLLEGE AVE

Good

Over: CORTE MADERA CREEK

0.2 MI SO SIR FRNCS DRAKE, Marin, CA

Built 1970 Load: 20.4 t ADT: 6,000

INDIAN PEAK ROAD

Good

Over: WEST FK CHOWCHILLA RIVER

3.2 MI S OF SR 49, Mariposa, CA

Built 1978 Load: 20.4 t ADT: 120

STATE ROUTE 1

Good

Over: HOWARD CREEK

01-MEN-001-R80.55, Mendocino, CA

Built 1972 Load: 20.4 t ADT: 1,185

FRESNO ROAD

Good

Over: NORTH FORK DEADMAN CREEK

1.0 MI N BUCHANAN HOLLW R, Merced, CA

Built 1930 Load: 20.4 t ADT: 35

STATE ROUTE 156 WB

Good

Over: UP RR & AMTRAK

05-MON-156-R1.59, Monterey, CA

Built 1942 Load: 20.4 t ADT: 16,116

Showing 17,751-17,800 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.