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

DREW RD

Poor

Over: NEW RIVER

0.8 MI S/O I-8, Imperial, CA

Built 1948 ADT: 1,500

EVAN HEWES HWY

Poor

Over: SOUTH FORK COYOTE WASH

3.5 MI E/O IMPERIAL HWY, Imperial, CA

Built 1932 ADT: 600

CR 305 (MAPES RD)

Poor

Over: HARTSON SLOUGH

0.4 MI E/O RD 303, Lassen, CA

Built 1978 ADT: 100

RD 424 (BASSETT)

Poor

Over: WILLOW CREEK

1.5 MI N OF RD A-2, Lassen, CA

Built 1960 ADT: 120

CR417 (PUNKIN CTR)

Poor

Over: MUDDY SLOUGH NO 1

2.8 MI S OF CR A2, Lassen, CA

Built 1955 ADT: 200

BELLVIEW RD

Poor

Over: WILLOW CREEK

O'NEAL ROAD, Madera, CA

Built 1940 ADT: 65

C.R. 210

Poor

Over: RYAN CREEK

4.0 MI E OF CR 211, Madera, CA

Built 1950 ADT: 70

WINDING ROAD

Poor

Over: NORTHFORK WILLOW CREEK

8S50-0.1, Madera, CA

Built 1928 ADT: 50

FOREST ROAD 330

Poor

Over: PARLIN CREEK

PARLIN FORK CONSERVATION, Mendocino, CA

Built 2005 ADT: 25

RANGE ROAD

Poor

Over: DRAINAGE SAN ANTONIO RIV

N TULE AIRSTRIP SEC 25, Monterey, CA

Built 1965 ADT: 10

PURDON ROAD

Poor

Over: SOUTH YUBA RIVER

2.0 MI S TYLER-FOOTE, Nevada, CA

Built 1895 ADT: 71

ROAD 23N37

Poor

Over: EUREKA CREEK

EUREKA CREEK, Plumas, CA

Built 1942 ADT: 50

ALTA MESA ROAD

Poor

Over: LAGUNA CREEK

0.4 MI N OF SR 104, Sacramento, CA

Built 1940 ADT: 1,530

CARMENCITA ROAD

Poor

Over: LAGUNA CREEK

0.7 MI N CALVINE RD, Sacramento, CA

Built 1945 ADT: 400

NAT TRAILS HWY

Poor

Over: COTA DITCH

16.7 MI E KELBAKER RD, San Bernardino, CA

Built 1930 ADT: 502

NAT TRAILS HWY

Poor

Over: DALMATIA DITCH

17.8 MI E KELBAKER RD, San Bernardino, CA

Built 1930 ADT: 502

RIVER ROAD

Poor

Over: HUER HUERO CREEK

1.5 MI S WELLONA AVE, San Luis Obispo, CA

Built 1950 ADT: 269

JACK CREEK RD

Poor

Over: PASO ROBLES CREEK

0.2 MI N STATE RTE 46, San Luis Obispo, CA

Built 1938 ADT: 151

SHOTGUN CREEK

Poor

Over: UNNAMED CREEK

NO DATA ENTERED, Shasta, CA

Built 1946 ADT: 50

TRAPPER ROAD

Poor

Over: TRAPPER CREEK

BEAVER, Siskiyou, CA

Built 1978 ADT: 50

NO DATA ENTERED

Poor

Over: MILL CREEK

NO DATA ENTERED, Tehama, CA

Built 1955 ADT: 20

MAY

Poor

Over: RATTLESNAKE CREEK

FOREST GLEN STA., Trinity, CA

Built 1959 ADT: 50

WINDING ROAD

Poor

Over: UPPER HUNTER CREEK

NO DATA ENTERED, Tuolumne, CA

Built 1969 ADT: 50

WINDING ROAD

Poor

Over: MILL CREEK

NO DATA ENTERED, Tuolumne, CA

Built 1969 ADT: 50

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

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

PICACHO RD

Poor

Over: YUMA MAIN CANAL

0.16 M E/O WINTERHAVEN RD, Imperial, CA

Built 1925 Load: 4.2 t ADT: 6,500

BRACE ROAD

Poor

Over: SECRET RAVINE

JUST EAST OF I-80, Placer, CA

Built 1939 Load: 4.2 t ADT: 2,595

ALDERCROFT HTS RD

Poor

Over: LOS GATOS CREEK

2.38 MI S LOS GATOS SC RD, Santa Clara, CA

Built 1956 Load: 4.2 t ADT: 30

MOSQUITO RD

Poor

Over: SOUTH FK AMERICAN RIVER

5.7 MI NORTH OF US 50, El Dorado, CA

Built 1939 Load: 5.2 t ADT: 1,055

TISDALE RD

Poor

Over: WESTSIDE CANAL

100' E CRANMORE RD, Sutter, CA

Built 1925 Load: 5.2 t ADT: 12

BREEDLOVE ROAD

Poor

Over: CANYON CREEK

1.0 MI N/O WENTWORTH S RD, El Dorado, CA

Built 1940 Load: 5.5 t ADT: 250

ELLIS RD

Poor

Over: SIMMERLY SLOUGH

1.0 MI E OF SR 70, Yuba, CA

Built 1928 Load: 5.5 t ADT: 40

ROAD 67

Poor

Over: BRANCH HOWARD SLOUGH

1.9 MI E OF RD Z, Glenn, CA

Built 1920 Load: 6.2 t ADT: 93

S COW MTN -8 MILE

Poor

Over: Panther Creek

11.4 miles SE of Ukiah, Lake, CA

Built 2000 Load: 6.5 t ADT: 25

HILL ROAD

Poor

Over: MILL CREEK

2.0 MI E FAIRBANKS RD, Mendocino, CA

Built 1925 Load: 6.5 t ADT: 78

KILBURN ROAD

Poor

Over: ORESTIMBA CREEK

.45 MI S CROWS LANDING RD, Stanislaus, CA

Built 1910 Load: 6.5 t ADT: 122

BUNKER ROAD

Poor

Over: OUTSIDE CANAL

0.3 MI W OF SR 33, Merced, CA

Built 1930 Load: 6.8 t ADT: 93

STATE ROUTE 111

Poor

Over: FIR DITCH

08-RIV-111-9.54, Riverside, CA

Built 1951 Load: 7.1 t ADT: 5,500

18023: MELSONS COR

Poor

Over: Perry Creek

10 mi SE of Placerville, El Dorado, CA

Built 1955 Load: 7.5 t ADT: 5

CR 305 (MAPES RD)

Poor

Over: WHITEHEAD SLOUGH

0.6 MI S/O RD 306, Lassen, CA

Built 1978 Load: 7.5 t ADT: 162

CUNNINGHAM LANE

Poor

Over: WEST WALKER RIVER

0.3 MI E RT 395, PM 112.5, Mono, CA

Built 1951 Load: 7.5 t ADT: 82

TYLER FOOTE XING

Poor

Over: MIDDLE YUBA RIVER

NEV/SIE CO LINE, Nevada, CA

Built 1958 Load: 7.5 t ADT: 58

MESA RD

Poor

Over: DURHAM MUTUAL DITCH

0.7 MI W OROVILLECHICO HY, Butte, CA

Built 1949 Load: 7.8 t ADT: 130

US HIGHWAY 101 SB

Poor

Over: NOJOQUI CREEK

05-SB-101-55.00, Santa Barbara, CA

Built 1956 Load: 7.8 t ADT: 11,000

BELLE MILL RD

Poor

Over: PAYNES CREEK SLOUGH

ROYAL DRIVE, Tehama, CA

Built 1915 Load: 7.8 t ADT: 1,373

N FANCHER AVE

Poor

Over: MILL DITCH

0.3 MI SOUTH OF MCKINLEY, Fresno, CA

Built 1939 Load: 8.1 t ADT: 200

Showing 25,801-25,850 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.