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

SWTWATER SPRING RD

Good

Over: PORTER CREEK

4 MI W/O WESTSIDE RD, Sonoma, CA

Built 2005 Load: 31.4 t ADT: 140

AVE 176

Good

Over: LAKELAND CANAL

AT RD 24, Tulare, CA

Built 1965 Load: 31.4 t ADT: 200

WINDING ROAD

Good

Over: TUOLUMNE RIVER

NO DATA ENTERED, Tuolumne, CA

Built 1999 Load: 31.4 t ADT: 155

STATE ROUTE 33

Good

Over: BILLY CREEK

07-VEN-033-47.91, Ventura, CA

Built 1953 Load: 31.4 t ADT: 340

STATE ROUTE 150

Good

Over: COYOTE CREEK OVERFLOW

07-VEN-150-9.60, Ventura, CA

Built 1959 Load: 31.4 t ADT: 2,650

US HIGHWAY 101 SB

Good

Over: MOBIL PIER ACCESS

07-VEN-101-R39.78, Ventura, CA

Built 1973 Load: 31.4 t ADT: 38,000

INTERSTATE 5

Good

Over: OAT CREEK

03-YOL-005-R21.84, Yolo, CA

Built 1968 Load: 31.4 t ADT: 11,200

STATE ROUTE 24 WB

Good

Over: PRESLEY WAY

04-ALA-024-R3.97-OAK, Alameda, CA

Built 1970 Load: 31.8 t ADT: 143,000

STATE ROUTE 32

Good

Over: ROCK CREEK OVERFLOW

03-BUT-032-2.41, Butte, CA

Built 1921 Load: 31.8 t ADT: 11,700

STATE ROUTE 32

Good

Over: ROCK CREEK OVERFLOW

03-BUT-032-2.34, Butte, CA

Built 1921 Load: 31.8 t ADT: 11,700

STATE ROUTE 49

Good

Over: CALAVERITAS CREEK

10-CAL-049-16.41, Calaveras, CA

Built 1930 Load: 31.8 t ADT: 7,300

CENTER AVENUE

Good

Over: GRAYSON CREEK

0.1 MI W PACHECO BLVD, Contra Costa, CA

Built 1970 Load: 31.8 t ADT: 6,706

SR 269 (LASSEN AV)

Good

Over: CALIFORNIA AQUEDUCT

06-FRE-269-13.38, Fresno, CA

Built 1966 Load: 31.8 t ADT: 2,550

STATE ROUTE 162

Good

Over: BRUSH CANAL

03-GLE-162-73.55, Glenn, CA

Built 1963 Load: 31.8 t ADT: 2,700

ROAD 59

Good

Over: COLUSA DRAIN

1.4 MI W HWY 45, Glenn, CA

Built 1945 Load: 31.8 t ADT: 113

N101-DEAN CRK RD

Good

Over: DEAN CREEK

01-HUM-101-R14.31, Humboldt, CA

Built 1967 Load: 31.8 t ADT: 310

US HIGHWAY 101 SB

Good

Over: VAN DUZEN RIVER OVERFLOW

01-HUM-101-57.36, Humboldt, CA

Built 1952 Load: 31.8 t ADT: 4,400

US HIGHWAY 101 NB

Good

Over: VAN DUZEN RIVER OVERFLOW

01-HUM-101-57.36, Humboldt, CA

Built 1952 Load: 31.8 t ADT: 4,400

US HIGHWAY 101 NB

Good

Over: JORDAN CREEK

01-HUM-101-R46.19, Humboldt, CA

Built 1966 Load: 31.8 t ADT: 6,000

INTERSTATE 8 WB

Good

Over: BOULDER CREEK

11-IMP-008-R0.87L, Imperial, CA

Built 1963 Load: 31.8 t ADT: 5,423

US HIGHWAY 395 SB

Good

Over: LOS ANGELES AQUEDUCT

09-INY-395-R21.31, Inyo, CA

Built 1979 Load: 31.8 t ADT: 6,400

6TH AVE

Good

Over: TULE RIVER

0.5 MI S QUEBEC AVE, Kings, CA

Built 1953 Load: 31.8 t ADT: 1,500

ELDER AVE

Good

Over: LOWER KINGS RIVER DITCH

0.7 MI E OF 16TH AVE, Kings, CA

Built 1962 Load: 31.8 t ADT: 400

ATLANTIC-S710 ONRP

Good

Over: LA JUNCTION RY

07-LA-710-21.79-BELL, Los Angeles, CA

Built 1957 Load: 31.8 t ADT: 1,100

STATE ROUTE 14 NB

Good

Over: PURITAN MINE ROAD

07-LA-014-45.73, Los Angeles, CA

Built 1963 Load: 31.8 t ADT: 48,500

INTERSTATE 5 SB

Good

Over: QUAIL LAKE RD

07-LA-005-R81.76, Los Angeles, CA

Built 1967 Load: 31.8 t ADT: 35,890

INTERSTATE 210

Good

Over: ARROYO STREET

07-LA-210-R5.46-LA, Los Angeles, CA

Built 1975 Load: 31.8 t ADT: 121,000

SOLEDAD CYN RD

Good

Over: SPRING CYN WASH

0.1MI E/O SR-14 FWY, Los Angeles, CA

Built 1948 Load: 31.8 t ADT: 4,811

SIERRA MDR BLVD W

Good

Over: EATON WASH

0.5MI W/O SIERRA MADRE VL, Los Angeles, CA

Built 1958 Load: 31.8 t ADT: 7,604

PARTHENIA ST

Good

Over: ALISO CREEK

0.57MI W/O RESEDA BLVD, Los Angeles, CA

Built 1955 Load: 31.8 t ADT: 34,493

US HIGHWAY 101 SB

Good

Over: GIBSON CREEK

01-MEN-101-R24.32-UKI, Mendocino, CA

Built 1964 Load: 31.8 t ADT: 10,450

US HIGHWAY 101 NB

Good

Over: GIBSON CREEK

01-MEN-101-R24.32-UKI, Mendocino, CA

Built 1964 Load: 31.8 t ADT: 10,450

RESERVATION RD

Good

Over: EL TORO CREEK

0.5 MI W OF SH 68, Monterey, CA

Built 1973 Load: 31.8 t ADT: 10,400

OAK KNOLL AVE

Good

Over: NAPA RIVER OVERFLOW

0.35 MI SW SLVRDO TRAIL, Napa, CA

Built 1930 Load: 31.8 t ADT: 2,600

INTERSTATE 80

Good

Over: EAGLE LAKES ROAD

03-NEV-080-R62.03R, Nevada, CA

Built 1964 Load: 31.8 t ADT: 11,750

RETRAC WAY

Good

Over: WOLF CREEK

0.7 MI W/O LIME KILN RD, Nevada, CA

Built 2017 Load: 31.8 t ADT: 650

CROTHER RD

Good

Over: UP RR, BNSF RY, & AMTRAK

NEAR BURGAN RD, Placer, CA

Built 1973 Load: 31.8 t ADT: 700

INTERSTATE 10 EB

Good

Over: WIDE DITCH

08-RIV-010-R101.14, Riverside, CA

Built 1967 Load: 31.8 t ADT: 11,500

INTERSTATE 10 EB

Good

Over: EAST CHANNEL STUBBY WASH

08-RIV-010-R24.24, Riverside, CA

Built 1940 Load: 31.8 t ADT: 45,500

INTERSTATE 10 WB

Good

Over: KEIM ACCESS ROAD

08-RIV-010-R146.90, Riverside, CA

Built 1972 Load: 31.8 t ADT: 11,250

INTERSTATE 10 EB

Good

Over: KEIM ACCESS ROAD

08-RIV-010-R146.90-BLY, Riverside, CA

Built 1972 Load: 31.8 t ADT: 11,250

STETSON AVENUE

Good

Over: HEMET CHANNEL

0.7 M E/O WARREN RD, Riverside, CA

Built 2020 Load: 31.8 t ADT: 3,000

DILLARD RD

Good

Over: COSUMNES RIVER OVERFLOW

0.4 MI E OF SH 99, Sacramento, CA

Built 1973 Load: 31.8 t ADT: 2,920

I-15 NB ON RAMP

Good

Over: PANO DITCH

08-SBD-015-R138.72, San Bernardino, CA

Built 1965 Load: 31.8 t ADT: 1,800

INTERSTATE 15 NB

Good

Over: IVANPAH DITCH

08-SBD-015-179.39, San Bernardino, CA

Built 1963 Load: 31.8 t ADT: 19,000

ROUTE 40 E BOUND

Good

Over: WONSAN DITCH

08-SBD-040-R3.81, San Bernardino, CA

Built 1964 Load: 31.8 t ADT: 9,850

INTERSTATE 40 WB

Good

Over: RED WASH

08-SBD-040-R39.00, San Bernardino, CA

Built 1967 Load: 31.8 t ADT: 8,150

INTERSTATE 40 EB

Good

Over: RED WASH

08-SBD-040-R39.00, San Bernardino, CA

Built 1967 Load: 31.8 t ADT: 8,150

STATE ROUTE 18

Good

Over: HILLSIDE

08-SBD-018-R11.45, San Bernardino, CA

Built 1967 Load: 31.8 t ADT: 16,800

INTERSTATE 8 EB

Good

Over: CANEBRAKE RD

11-SD-008-R63.32, San Diego, CA

Built 1967 Load: 31.8 t ADT: 8,100

Showing 19,851-19,900 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.