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

ROAD M10

Good

Over: BEAR CREEK

24 MI. N.E. OF UPPERLAKE, Lake, CA

Built 1973 Load: 30.1 t ADT: 20

INTERSTATE 5 SB

Good

Over: CASTAIC CREEK

07-LA-005-R56.26, Los Angeles, CA

Built 1968 Load: 30.1 t ADT: 54,420

INTERSTATE 210 EB

Good

Over: ABANDONED RR ROW

07-LA-210-R29.09-PAS, Los Angeles, CA

Built 1976 Load: 30.1 t ADT: 269,000

FIRESTONE BLVD S

Good

Over: COYOTE CRK

0.8MI E/O VALLEY VIEW AVE, Los Angeles, CA

Built 1950 Load: 30.1 t ADT: 3,556

LAS TUNAS DR

Good

Over: ARCADIA WASH

0.1MI E/O EL MONTE AVE, Los Angeles, CA

Built 1955 Load: 30.1 t ADT: 21,836

PECK RD

Good

Over: SAN GABRIEL RIV

0.3MI S/O SR-60 FWY, Los Angeles, CA

Built 1952 Load: 30.1 t ADT: 14,317

SOMERSET BLVD

Good

Over: LOS ANGELES RIV

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

Built 1976 Load: 30.1 t ADT: 21,024

WARDLOW RD

Good

Over: EL DORADO PARK E ACSS RD

0.8MI W/O I-605 FWY, Los Angeles, CA

Built 1963 Load: 30.1 t ADT: 19,186

GARZOTA DR

Good

Over: DRY CYN CHAN

0.3MI W/O SECO CYN RD, Los Angeles, CA

Built 1972 Load: 30.1 t ADT: 1,789

PAMPLICO DR

Good

Over: DRY CYN CHAN

0.1MI W/O SECO CYN RD, Los Angeles, CA

Built 1972 Load: 30.1 t ADT: 5,831

SR 39 (BEACH BLVD)

Good

Over: PARKING LOT ACCESS

12-ORA-039-13.51-BPK, Orange, CA

Built 1960 Load: 30.1 t ADT: 59,000

STINSON STREET

Good

Over: CARBON CREEK CHANNEL

0.1 MI. S/O LINCOLN AVE., Orange, CA

Built 1959 Load: 30.1 t ADT: 120

BOWMAN ROAD

Good

Over: UP RR, BNSF RY, & AMTRAK

0.1 MI S. OLD AIRPORT RD., Placer, CA

Built 1949 Load: 30.1 t ADT: 6,032

INTERSTATE 10 WB

Good

Over: ECHO DITCH

08-RIV-010-R62.62-COA, Riverside, CA

Built 1964 Load: 30.1 t ADT: 11,250

INTERSTATE 10 EB

Good

Over: ECHO DITCH

08-RIV-010-R62.62-COA, Riverside, CA

Built 1964 Load: 30.1 t ADT: 11,250

INTERSTATE 15 SB

Good

Over: HORSETHIEF CYN RD

08-RIV-015-28.87, Riverside, CA

Built 1980 Load: 30.1 t ADT: 61,000

HOBSON WAY

Good

Over: "C" CANAL

0.52 MI. W/O LOVEKIN BLVD, Riverside, CA

Built 1948 Load: 30.1 t ADT: 3,000

INTERSTATE 5 NB

Good

Over: LOST SLOUGH

03-SAC-005-1.04, Sacramento, CA

Built 1979 Load: 30.1 t ADT: 26,500

STOCKTON BLVD

Good

Over: ELDER CREEK

0.1 MI S OF GERBER RD, Sacramento, CA

Built 1924 Load: 30.1 t ADT: 36,051

INTERSTATE 215 SB

Good

Over: DEVIL CREEK

08-SBD-215-12.82-SBD, San Bernardino, CA

Built 1958 Load: 30.1 t ADT: 35,500

STATE ROUTE 18

Good

Over: HILLSIDE

08-SBD-018-R12.68, San Bernardino, CA

Built 1969 Load: 30.1 t ADT: 16,800

STATE HIGHWAY 138

Good

Over: SEELEY CREEK

08-SBD-138-R29.96, San Bernardino, CA

Built 1970 Load: 30.1 t ADT: 1,500

NAT TRAILS HWY

Good

Over: TEVIOT DITCH

22.5 MI E KELBAKER RD, San Bernardino, CA

Built 1948 Load: 30.1 t ADT: 502

FORT IRWIN ROAD

Good

Over: STORM DRAINAGE

0.3 MI. N OF NASA ROAD, San Bernardino, CA

Built 1986 Load: 30.1 t ADT: 6,760

FORT IRWIN RD

Good

Over: STORM DRAINAGE

0.5 MI. NE CABLE RTE, San Bernardino, CA

Built 1986 Load: 30.1 t ADT: 6,760

INTERSTATE 5

Good

Over: ALISO CREEK

11-SD-005-R59.62-OCN, San Diego, CA

Built 1967 Load: 30.1 t ADT: 66,000

LOS TERRENITOS F47

Good

Over: SWEETWATER RIVER

175 FT W/O SR 79, San Diego, CA

Built 1917 Load: 30.1 t ADT: 300

DEHESA RD

Good

Over: NORTH FORK SWEETWATER RI

2.8 MI W TAVERN RD, San Diego, CA

Built 1989 Load: 30.1 t ADT: 7,169

THIRD ST

Good

Over: CHINA BASIN

S OF BERRY ST, San Francisco, CA

Built 1932 Load: 30.1 t ADT: 25,000

JACK TONE RD

Good

Over: BEAR CREEK

0.3 MI S BRANDT RD, San Joaquin, CA

Built 1962 Load: 30.1 t ADT: 2,514

STATE ROUTE 1 SB

Good

Over: OLD CREEK

05-SLO-001-34.46, San Luis Obispo, CA

Built 1961 Load: 30.1 t ADT: 6,250

STATE ROUTE 1

Good

Over: GAZOS CREEK

04-SM-001-5.73, San Mateo, CA

Built 1958 Load: 30.1 t ADT: 4,400

STATE ROUTE 84

Good

Over: LA HONDA CREEK

04-SM-084-8.10, San Mateo, CA

Built 1957 Load: 30.1 t ADT: 1,400

STATE ROUTE 192

Good

Over: BUENA VISTA CREEK

05-SB-192-10.53, Santa Barbara, CA

Built 1968 Load: 30.1 t ADT: 3,100

TURNPIKE ROAD

Good

Over: SAN ANTONIO CREEK

@ CATHEDRAL OAKS RD, Santa Barbara, CA

Built 1976 Load: 30.1 t ADT: 1,171

GOVER ROAD

Good

Over: BATTLE CREEK OVERFLOW

0.1 MI N TEHAMA CO LINE, Shasta, CA

Built 1961 Load: 30.1 t ADT: 536

EDGEWOOD RD

Good

Over: SHASTA RIVER

0.1 MI E SLOUGH RD, Siskiyou, CA

Built 1969 Load: 30.1 t ADT: 395

INTERSTATE 780 EB

Good

Over: ACCESS ROAD

04-SOL-780-1.23-BEN, Solano, CA

Built 1962 Load: 30.1 t ADT: 23,500

ROCKPILE ROAD

Good

Over: WARM SPRINGS CREEK

3.5 MI JCT DUTCHER CRK RD, Sonoma, CA

Built 1978 Load: 30.1 t ADT: 1,650

PARKS CREEK

Good

Over: LITTLE TRINITY RIVER

NO DATA ENTERED, Trinity, CA

Built 1974 Load: 30.1 t ADT: 50

D 180

Good

Over: PACKWOOD CANAL

.67 MI NE OF R180, Tulare, CA

Built 1956 Load: 30.1 t ADT: 100

AVE 228

Good

Over: LEWIS CREEK

0.4 MI E OF RD 228, Tulare, CA

Built 1950 Load: 30.1 t ADT: 600

ROAD 142

Good

Over: PORTER SLOUGH

0.5 MI S OF AVE 192, Tulare, CA

Built 1956 Load: 30.1 t ADT: 50

U.S. HIGHWAY 101

Good

Over: HILLSIDE

07-VEN-101-4.58-THOK, Ventura, CA

Built 1982 Load: 30.1 t ADT: 192,000

SANTA ANA BL

Good

Over: VENTURA RIVER

0.5 MI W/O SR 33, Ventura, CA

Built 1960 Load: 30.1 t ADT: 2,500

SANTA CLARA AVE

Good

Over: SANTA CLARA AVE DRAIN

0.9 MI N/E US ROUTE 101, Ventura, CA

Built 1929 Load: 30.1 t ADT: 12,100

STATE ROUTE 99 SB

Good

Over: EDGAR SLOUGH

03-BUT-099-30.03, Butte, CA

Built 1989 Load: 30.5 t ADT: 14,125

BYRON HWY

Good

Over: E CONTRA COSTA ID CANAL

0.5 MI NORTH OF SR 4, Contra Costa, CA

Built 1968 Load: 30.5 t ADT: 3,727

THIRD ST

Good

Over: RODEO CREEK

JUST E RAILROAD AVE, Contra Costa, CA

Built 1965 Load: 30.5 t ADT: 725

U.S. HIGHWAY 199

Good

Over: PATRICK CREEK

01-DN-199-R22.07, Del Norte, CA

Built 1965 Load: 30.5 t ADT: 3,750

Showing 19,601-19,650 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.