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 36

Fair

Over: EAST SAND SLOUGH

02-TEH-036-41.95-RBL, Tehama, CA

Built 1947 Load: 20.1 t ADT: 19,500

OSBORN RD

Fair

Over: MILL CREEK BRANCH

2.7 MI N PASKENTA RD, Tehama, CA

Built 1942 Load: 20.1 t ADT: 40

AVE 220

Fair

Over: ELK BAYOU

0.18 MI E OF RD 140, Tulare, CA

Built 1945 Load: 20.1 t ADT: 50

ROAD 192

Fair

Over: COTTONWOOD CREEK

0.7 MI N OF A344, Tulare, CA

Built 1960 Load: 20.1 t ADT: 25

AVE 432 (FLORAL)

Fair

Over: ALTA CANAL

0.4 MI E OF R 109, Tulare, CA

Built 1927 Load: 20.1 t ADT: 325

SR 1

Fair

Over: LITTLE SYCAMORE CREEK

07-VEN-001-1.23, Ventura, CA

Built 1928 Load: 20.1 t ADT: 11,600

STATE ROUTE 126 EB

Fair

Over: TWELFTH STREET

07-VEN-126-R12.29-SPA, Ventura, CA

Built 1965 Load: 20.1 t ADT: 18,250

INTERSTATE 580

Fair

Over: HILLSIDE

04-ALA-580-R6.92, Alameda, CA

Built 1969 Load: 20.4 t ADT: 110,000

JORDAN HILL RD

Fair

Over: CONCOW CREEK

0.8 MI W OF CONCOW RD, Butte, CA

Built 1920 Load: 20.4 t ADT: 5

CAMP CREEK ROAD

Fair

Over: ARCH ROCK CREEK

8.2 MILES FROM SR 70, Butte, CA

Built 2011 Load: 20.4 t ADT: 20

CONCORD AVE

Fair

Over: WALNUT CREEK

0.83 MI E SH 680, Contra Costa, CA

Built 1964 Load: 20.4 t ADT: 17,732

HOFFMAN LANE

Fair

Over: KELLOGG CREEK

1.0 MI S MARSH CREEK RD, Contra Costa, CA

Built 1952 Load: 20.4 t ADT: 334

DUNLAP RD

Fair

Over: MILL CREEK

0.5 MI S/O ORCHARD DR, Fresno, CA

Built 1956 Load: 20.4 t ADT: 600

E HUNTSMAN AVE

Fair

Over: FOWLER SWITCH CANAL

0.3 MI E OF TEMPERANCE AV, Fresno, CA

Built 1925 Load: 20.4 t ADT: 300

ROAD 'F'

Fair

Over: GLENN-COLUSA CANAL

0.5 MI S/O ROAD 62, Glenn, CA

Built 1948 Load: 20.4 t ADT: 30

ROAD 48

Fair

Over: GLENN-COLUSA CANAL

1.0 MI E OF RD 99W, Glenn, CA

Built 1948 Load: 20.4 t ADT: 150

COUNTY RD NO. 8

Fair

Over: TEHAMA-COLUSA CANAL

0.2 MI E OF RD 'N', Glenn, CA

Built 1965 Load: 20.4 t ADT: 25

STATE ROUTE 283

Fair

Over: EEL RIVER & NWP RR

01-HUM-283-0.12, Humboldt, CA

Built 1941 Load: 20.4 t ADT: 2,150

HOWARD HEIGHTS RD

Fair

Over: FRESHWATER CREEK

0.01 MI SW FRESHWATER RD, Humboldt, CA

Built 1949 Load: 20.4 t ADT: 172

BROOKWOOD DRIVE

Fair

Over: JACOBY CREEK

0.1 MI S/O JACOBY CRK RD, Humboldt, CA

Built 1967 Load: 20.4 t ADT: 162

PELLETT RD

Fair

Over: WESTSIDE MAIN CANAL

1.0 MI W/O 58C0179, Imperial, CA

Built 1950 Load: 20.4 t ADT: 60

U.S. HIGHWAY 395

Fair

Over: SUSAN RIVER OVERFLOW

02-LAS-395-R71.92, Lassen, CA

Built 1992 Load: 20.4 t ADT: 1,700

SCOTT RD

Fair

Over: SCOTT CREEK

2.0 MI S OF SR 70, Lassen, CA

Built 1954 Load: 20.4 t ADT: 50

SIERRA HWY

Fair

Over: METROLINK & UP RR, CREEK

0.1 MI EAST OF I-5, Los Angeles, CA

Built 1911 Load: 20.4 t ADT: 6,100

WARDLOW RD W

Fair

Over: LOS ANGELES RIV

0.1MI E/O I-710 FWY, Los Angeles, CA

Built 1950 Load: 20.4 t ADT: 26,141

SECO ST

Fair

Over: ARROYO SECO CHAN

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

Built 1939 Load: 20.4 t ADT: 1,793

ARROYO BLVD

Fair

Over: ARROYO SECO CHAN

0.1MI N/O SR-134 FWY, Los Angeles, CA

Built 1927 Load: 20.4 t ADT: 1,965

ROAD 24 1/2

Fair

Over: COTTONWOOD CREEK

2.1 MI SOUTH OF AVE 12, Madera, CA

Built 1961 Load: 20.4 t ADT: 50

STATE ROUTE 49

Fair

Over: MAXWELL CREEK

10-MPA-049-44.62, Mariposa, CA

Built 1963 Load: 20.4 t ADT: 615

U.S. HIGHWAY 101

Fair

Over: ROBINSON CREEK

01-MEN-101-20.91, Mendocino, CA

Built 1940 Load: 20.4 t ADT: 7,350

STATE ROUTE 101

Fair

Over: NCRRA/NWP RR

01-MEN-020-35.63, Mendocino, CA

Built 1969 Load: 20.4 t ADT: 13,500

STATE PARK ROAD

Fair

Over: LITTLE RIVER

VAN DAMME STATE PARK, Mendocino, CA

Built 1995 Load: 20.4 t ADT: 100

S BR INGALSBE SLGH

Fair

Over: SOUTH BR INGALSBE SLOUGH

10-MER-059-31.25, Merced, CA

Built 1926 Load: 20.4 t ADT: 1,425

STATE ROUTE 165

Fair

Over: OUTSIDE CANAL

10-MER-165-4.52, Merced, CA

Built 1968 Load: 20.4 t ADT: 1,800

ROMERO ROAD

Fair

Over: OUTSIDE CANAL

AT RTE 33, Merced, CA

Built 1924 Load: 20.4 t ADT: 35

NCMNTO-FERGUSON RD

Fair

Over: NACIMIENTO CREEK

14.9 MI NW OF MISSION RD, Monterey, CA

Built 1950 Load: 20.4 t ADT: 500

DARLING AVE (RSVL)

Fair

Over: DRY CREEK

NEAR CLINTON AVE, Placer, CA

Built 1964 Load: 20.4 t ADT: 4,434

MCKINNEY CREEK RD

Fair

Over: MCKINNEY CREEK

0.1 MI NW MCKNY RUBCN SP, Placer, CA

Built 1950 Load: 20.4 t ADT: 1,409

INTERSTATE 215

Fair

Over: BNSF RY & METROLINK

08-SBD-215-6.59-SBD, San Bernardino, CA

Built 1957 Load: 20.4 t ADT: 192,000

NATL TRAILS HWY

Fair

Over: TRANS DITCH

1.9 MI E OF CRUCERO RD, San Bernardino, CA

Built 1930 Load: 20.4 t ADT: 108

NAT TRAILS HWY

Fair

Over: WIDE WASH

4.3 MI E OF CRUCERO RD, San Bernardino, CA

Built 1930 Load: 20.4 t ADT: 230

STATE ROUTE 94

Fair

Over: DULZURA CREEK

11-SD-094-24.66, San Diego, CA

Built 1947 Load: 20.4 t ADT: 7,800

HOG CANYON RD

Fair

Over: HOG CANYON CREEK

3.4 MI NE OF ESTRELLA RD, San Luis Obispo, CA

Built 1960 Load: 20.4 t ADT: 1,267

VIEJO CAMINO

Fair

Over: WEST BRANCH PALOMA CREEK

0.4 MI SE EL CAMINO REAL, San Luis Obispo, CA

Built 1959 Load: 20.4 t ADT: 500

SOUTH AIRPORT BLVD

Fair

Over: COLOMA CREEK

150 FT S/O MITCHELL AVE, San Mateo, CA

Built 1977 Load: 20.4 t ADT: 15,000

STATE ROUTE 9

Fair

Over: SAN LORENZO RIVER

05-SCR-009-7.87, Santa Cruz, CA

Built 1933 Load: 20.4 t ADT: 21,100

ASH CR RD

Fair

Over: SACRAMENTO RIVER

1.2 MI E BALLS FERRY RD, Shasta, CA

Built 1970 Load: 20.4 t ADT: 850

QUARTZ VALLEY ROAD

Fair

Over: SCOTT RIVER

0.3 MI S SCOTT RIVER RD, Siskiyou, CA

Built 1967 Load: 20.4 t ADT: 329

HORSE CREEK ROAD

Fair

Over: SEIAD CREEK

HORSE, Siskiyou, CA

Built 1956 Load: 20.4 t ADT: 50

FRUITVALE RD

Fair

Over: ULATIS CREEK

0.1 MI W GIBSON CANYON RD, Solano, CA

Built 1965 Load: 20.4 t ADT: 2,880

Showing 9,351-9,400 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.