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 162

Poor

Over: SACRAMENTO RIVER

03-GLE-162-76.70, Glenn, CA

Built 1948 Load: 8.1 t ADT: 2,400

LINDLEY ROAD

Poor

Over: MATTOLE RIVER

0.5 MI NE MATTOLE RD, Humboldt, CA

Built 1925 Load: 8.1 t ADT: 50

OLD TOPANGA CYN RD

Poor

Over: RED ROCK CRK

1.9MI N/O TOPANGA CYN BL, Los Angeles, CA

Built 1936 Load: 8.1 t ADT: 2,712

BURCHELL AVENUE

Poor

Over: DUCK SLOUGH

0.6 MI N/O MARIPOSA WAY, Merced, CA

Built 1938 Load: 8.1 t ADT: 360

DILLON ROAD

Poor

Over: WHITEWATER RIVER

0.12 MI. SE/O SR 86S, Riverside, CA

Built 1950 Load: 8.1 t ADT: 8,700

SAN FELIPE ROAD

Poor

Over: TEQUISQUITA SLOUGH

0.85 MI SOUTH OF SHORE RD, San Benito, CA

Built 1952 Load: 8.1 t ADT: 2,760

NAT TRAILS HWY

Poor

Over: CALIFA DITCH

21.2 MI E KELBAKER RD, San Bernardino, CA

Built 1930 Load: 8.1 t ADT: 502

GILROY HOT SPGS RD

Poor

Over: COYOTE CREEK

2.6 MI N CANADA RD, Santa Clara, CA

Built 1921 Load: 8.4 t ADT: 10

COUNTY ROAD 303

Poor

Over: S FK WILLOW CREEK

4.3 MI S OF S.H. 162, Glenn, CA

Built 1920 Load: 8.7 t ADT: 56

CHALK MTN RD

Poor

Over: NORTH FORK CACHE CREEK

IN SPRING VALLEY LAKE DEV, Lake, CA

Built 1967 Load: 8.7 t ADT: 15

SYCAMORE SLOUGH RD

Poor

Over: SYCAMORE SLOUGH

0.6 MI N OF SACHREITER RD, Colusa, CA

Built 1915 Load: 9.1 t ADT: 70

CHOWCHILLA ROAD

Poor

Over: BIG CREEK

Approx. 2.5 miles SW of W, Mariposa, CA

Built 1940 Load: 9.1 t ADT: 20

WURR RD

Poor

Over: PESCADERO CREEK

0.1 MI E PESCADERO RD, San Mateo, CA

Built 1962 Load: 9.1 t ADT: 91

BELLE MILL RD

Poor

Over: SAMSON SLOUGH

WHITE ROAD, Tehama, CA

Built 1915 Load: 9.1 t ADT: 1,837

CALAVERITAS RD

Poor

Over: CALAVERITAS CREEK

4.6 MI SE/O MT RANCH RD, Calaveras, CA

Built 1928 Load: 10.0 t ADT: 203

LOCKWOOD SAN LUCAS

Poor

Over: SALINAS RIVER

0.1 MI W OF US 101, Monterey, CA

Built 1915 Load: 10.0 t ADT: 530

NAT TRAILS HWY

Poor

Over: ADENA DITCH

21.9 MI E KELBAKER RD, San Bernardino, CA

Built 1930 Load: 10.0 t ADT: 502

NAT TRAILS HWY

Poor

Over: BANDERA WASH

26.1 MI E KELBAKER RD, San Bernardino, CA

Built 1930 Load: 10.0 t ADT: 502

GREEN VALLEY RD

Poor

Over: CASSERLY CREEK TRIB NO 2

@ TRAVELERS LANE, Santa Cruz, CA

Built 1920 Load: 10.0 t ADT: 500

GAVIN MANDRY DRIVE

Poor

Over: HUTCHINSON CREEK

1 MILE EAST OF INTERSECTI, Yuba, CA

Built 1952 Load: 10.0 t ADT: 3,400

DOOLITTLE DRIVE

Poor

Over: HUTCHINSON CREEK

3.5 MILES SOUTH OF DOOLIT, Yuba, CA

Built 1952 Load: 10.0 t ADT: 3,900

WARREN SHINGLE ROA

Poor

Over: HUTCHINSON CREEK

0.85 MILES EAST OF INTERS, Yuba, CA

Built 1952 Load: 10.0 t ADT: 2,000

LINDEMANN RD

Poor

Over: DELTA-MENDOTA CANAL

100 FT S HERDLYN RD, Contra Costa, CA

Built 1950 Load: 10.4 t ADT: 150

GRIZZLY FLAT ROAD

Poor

Over: STEELY FK COSUMNES RIVER

7.0 MI E OF MT AUKUM RD, El Dorado, CA

Built 1936 Load: 10.4 t ADT: 2,080

NAT TRAILS HWY

Poor

Over: CLIPPER DITCH

23.6 MI E KELBAKER RD, San Bernardino, CA

Built 1930 Load: 10.4 t ADT: 502

ROCK CREEK ROAD

Poor

Over: EAST FORK MILL CREEK

4.1 MILES EAST OF US 101, Del Norte, CA

Built 1950 Load: 11.0 t ADT: 10

NAT TRAILS HWY

Poor

Over: ELLITA DITCH

15.3 MI E KELBAKER RD, San Bernardino, CA

Built 1930 Load: 11.0 t ADT: 502

NAT TRAILS HWY

Poor

Over: TENINO DITCH

16.0 MI E KELBAKER RD, San Bernardino, CA

Built 1930 Load: 11.0 t ADT: 502

NAT TRAILS HWY

Poor

Over: BUD DITCH

18.8 MI E KELBAKER RD, San Bernardino, CA

Built 1930 Load: 11.0 t ADT: 502

SYCAMORE DR

Poor

Over: TWIN OAKS VALLEY CREEK

0.17 MI S/O DEER SPRINGS, San Diego, CA

Built 1960 Load: 11.0 t ADT: 1,387

CAMP EDEN ROAD

Poor

Over: DUCK LAKE CREEK

CALLAHAN, Siskiyou, CA

Built 1949 Load: 11.0 t ADT: 50

DENNIS DR

Poor

Over: SALT CREEK

0.1 MI W LODOGA-STONYFORD, Colusa, CA

Built 1935 Load: 11.3 t ADT: 23

AIRPORT BLVD

Poor

Over: BURLINGAME LAGOON

1.3 MI E OF BAYSHORE HWY, San Mateo, CA

Built 1970 Load: 11.3 t ADT: 7,000

WEAVER RD

Poor

Over: CENTRAL MAIN CANAL

20 FT E/O AUSTIN RD, Imperial, CA

Built 1950 Load: 12.0 t ADT: 100

BUCKMAN RD

Poor

Over: DUCK CREEK

0.2 MI N OF SR 4, San Joaquin, CA

Built 1931 Load: 12.0 t ADT: 179

ANDERSON ROAD

Poor

Over: CCID MAIN CANAL

0.3 MI W STATE RTE 33, Stanislaus, CA

Built 1926 Load: 12.0 t ADT: 333

E RIO BONITO ROAD

Poor

Over: SUTTER-BUTTE CANAL

0.8 MI EAST OF SR 99, Butte, CA

Built 1974 Load: 12.3 t ADT: 270

COUNTY ROAD 303

Poor

Over: S FK WILLOW CREEK

4.5 MI S OF S.H. 162, Glenn, CA

Built 1929 Load: 12.3 t ADT: 56

MATTOLE RD

Poor

Over: MATTOLE RIVER

E OF JCT WILDER RIDGE RD, Humboldt, CA

Built 1920 Load: 12.3 t ADT: 514

SUVA ST

Poor

Over: RIO HONDO

0.8MI N/O FLORENCE AVE, Los Angeles, CA

Built 1954 Load: 12.3 t ADT: 11,589

BASELINE RD

Poor

Over: EAST TWIN CREEK CHANNEL

0.75 MI E WATERMAN AVE, San Bernardino, CA

Built 1961 Load: 12.3 t ADT: 28,140

NAT TRAILS HWY

Poor

Over: ATAJO DITCH

14.3 MI E KELBAKER RD, San Bernardino, CA

Built 1930 Load: 12.3 t ADT: 502

NAT TRAILS HWY

Poor

Over: AXTON DITCH

26.0 MI E KELBAKER RD, San Bernardino, CA

Built 1930 Load: 12.3 t ADT: 502

NAT TRAILS HWY

Poor

Over: ECKSY DITCH

1.30 MI E OF ESSEX RD, San Bernardino, CA

Built 1930 Load: 12.3 t ADT: 502

SCOTT MTN RD

Poor

Over: EAST FORK SCOTT RIVER

AT GAZELLE CALLAHAN RD, Siskiyou, CA

Built 1914 Load: 12.3 t ADT: 23

HARTMAN CUTOFF

Poor

Over: WILLOW CREEK

0.2 MI N/O CR 415, Madera, CA

Built 1973 Load: 12.6 t ADT: 22

CHUCKWALLA VLY RD

Poor

Over: TARANTULA DITCH

1.5 MI E/O CORN SPRNGS RD, Riverside, CA

Built 1931 Load: 12.6 t ADT: 40

NAT TRAILS HWY

Poor

Over: ALBRO DITCH

13.8 MI E KELBAKER RD, San Bernardino, CA

Built 1930 Load: 12.6 t ADT: 502

34013: HUNTING CRE

Poor

Over: HUNTING CREEK

20.4 mi W of Lower Lake,, Lake, CA

Built 2003 Load: 13.0 t ADT: 25

C.R. 810

Poor

Over: E FK CHOWCHILLA RIVER

0.1 MI SE OF CR 800, Madera, CA

Built 1965 Load: 13.0 t ADT: 25

Showing 25,851-25,900 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.