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

OAK GLEN AVE

Good

Over: LLAGAS CREEK

0.04 MI E UVAS RD, Santa Clara, CA

Built 1954 Load: 26.6 t ADT: 1,710

BENNETT VALLEY RD

Good

Over: MATANZAS CREEK

7.7 MI W WARM SPRINGS RD, Sonoma, CA

Built 1929 Load: 26.6 t ADT: 5,800

ARMSTRONG WOODS RD

Good

Over: REDWOOD CREEK

JUST N/O SWTWTR SPNGS RD, Sonoma, CA

Built 1959 Load: 26.6 t ADT: 3,800

MONTE VISTA TERR

Good

Over: JOHNSON GULCH

IN MONTE RIO, Sonoma, CA

Built 2001 Load: 26.6 t ADT: 200

M 112

Good

Over: TYLER CREEK

0.3 MI N OF M56, Tulare, CA

Built 1952 Load: 26.6 t ADT: 25

STATE ROUTE 33

Good

Over: CUYAMA RIVER

07-VEN-033-48.67, Ventura, CA

Built 2001 Load: 26.6 t ADT: 340

GREENVILLE RD

Good

Over: SOUTH BAY AQUEDUCT

2.1 MI SOUTH OF I-580, Alameda, CA

Built 1962 Load: 26.9 t ADT: 1,200

STATE ROUTE 99

Good

Over: HAMILTON SLOUGH

03-BUT-099-8.21, Butte, CA

Built 1950 Load: 26.9 t ADT: 11,050

MCDERMOTT RD

Good

Over: STONE CORRAL CREEK

0.8 MI N OF MAXWELL-SITES, Colusa, CA

Built 1947 Load: 26.9 t ADT: 268

HAMILTON ROAD

Good

Over: POWDERHOUSE CREEK

4 MILES EAST OF US 101, Del Norte, CA

Built 2019 Load: 26.9 t ADT: 10

U.S. HIGHWAY 50 WB

Good

Over: BASS LAKE ROAD

03-ED-050-R3.24, El Dorado, CA

Built 1966 Load: 26.9 t ADT: 60,000

INTERSTATE 5 SB

Good

Over: ARROYO HONDO

06-FRE-005-33.62, Fresno, CA

Built 1967 Load: 26.9 t ADT: 16,000

ROAD 'F'

Good

Over: TEHAMA-COLUSA CANAL

0.3 MI S/O ROAD 25, Glenn, CA

Built 1970 Load: 26.9 t ADT: 65

STATE ROUTE 211

Good

Over: SALT RIVER

01-HUM-211-R75.15, Humboldt, CA

Built 1951 Load: 26.9 t ADT: 5,700

MYRTLE AVE

Good

Over: RYAN SLOUGH

2.9 MI E INTX WTH US 101, Humboldt, CA

Built 1955 Load: 26.9 t ADT: 8,530

EAST FRONTAGE ROAD

Good

Over: PEDESTRIAN WALKWAY

0.2 MI N 14TH ST, Humboldt, CA

Built 1976 Load: 26.9 t ADT: 2,000

STATE ROUTE 86 NB

Good

Over: VERBENA DITCH

11-IMP-086-61.36, Imperial, CA

Built 1979 Load: 26.9 t ADT: 7,300

STATE ROUTE 86 NB

Good

Over: ELECTRA DITCH

11-IMP-086-61.69, Imperial, CA

Built 1979 Load: 26.9 t ADT: 7,300

STATE ROUTE 86 NB

Good

Over: BEXAR DITCH

11-IMP-086-62.64, Imperial, CA

Built 1979 Load: 26.9 t ADT: 7,300

STATE ROUTE 86 NB

Good

Over: TORTIF DITCH

11-IMP-086-62.97, Imperial, CA

Built 1979 Load: 26.9 t ADT: 7,300

STATE ROUTE 86 NB

Good

Over: FOLIUS DITCH

11-IMP-086-63.12, Imperial, CA

Built 1979 Load: 26.9 t ADT: 7,100

STATE ROUTE 86 NB

Good

Over: FLORIS DITCH

11-IMP-086-63.21, Imperial, CA

Built 1979 Load: 26.9 t ADT: 7,100

STATE ROUTE 86 NB

Good

Over: ENCILIA DITCH

11-IMP-086-63.49, Imperial, CA

Built 1979 Load: 26.9 t ADT: 7,300

STATE ROUTE 86 NB

Good

Over: CALYX DITCH

11-IMP-086-64.33, Imperial, CA

Built 1979 Load: 26.9 t ADT: 7,200

STATE ROUTE 86 NB

Good

Over: PAROSA DITCH

11-IMP-086-65.00, Imperial, CA

Built 1981 Load: 26.9 t ADT: 7,200

STATE ROUTE 1

Good

Over: UP RR

07-LA-001-8.34-LBCH, Los Angeles, CA

Built 1948 Load: 26.9 t ADT: 26,000

N57-W210 CONNECTOR

Good

Over: LACMTA & BNSF RY

07-LA-057-R12.18L-GDR, Los Angeles, CA

Built 1970 Load: 26.9 t ADT: 92,000

N5-E118 CONNECTOR

Good

Over: LAUREL CYN BLVD

07-LA-005-39.25-LA, Los Angeles, CA

Built 1976 Load: 26.9 t ADT: 13,292

FAIR OAKS AVE

Good

Over: METRO

0.3MI N/O SR-110 FWY, Los Angeles, CA

Built 1972 Load: 26.9 t ADT: 26,509

VERDUGO AVE

Good

Over: BURBANK WESTERN CHAN

0.1MI N/O LAKE ST, Los Angeles, CA

Built 1949 Load: 26.9 t ADT: 3,570

GOLD CRK RD

Good

Over: LITTLE TUJUNGA CYN

200FT E/O LITTLE TUJUNGA, Los Angeles, CA

Built 1953 Load: 26.9 t ADT: 81

E TRAIL

Good

Over: KAGEL CYN CRK

0.1MI E/O KAGEL CYN RD, Los Angeles, CA

Built 1955 Load: 26.9 t ADT: 386

WHEALAN ROAD

Good

Over: DUCK SLOUGH CREEK

0.75 MI N MARIPOSA WAY, Merced, CA

Built 1973 Load: 26.9 t ADT: 184

GARDEN BAR ROAD

Good

Over: LITTLE WOLF CREEK

2.8 MI SOUTH OF WOLF RD, Nevada, CA

Built 1901 Load: 26.9 t ADT: 1,075

STATE ROUTE 147

Good

Over: HAMILTON BRANCH CREEK

02-PLU-147-8.98, Plumas, CA

Built 2018 Load: 26.9 t ADT: 1,525

SLOAT ROAD

Good

Over: LONG VALLEY CREEK

1.2 MI S/W SH 70, Plumas, CA

Built 1989 Load: 26.9 t ADT: 180

INTERSTATE 15 NB

Good

Over: BEDFORD WASH

08-RIV-015-36.58, Riverside, CA

Built 1966 Load: 26.9 t ADT: 73,000

OLD AUBURN ROAD

Good

Over: CRIPPLE CREEK

1.4 MI NE SUNRISE BL, Sacramento, CA

Built 1965 Load: 26.9 t ADT: 16,739

INTERSTATE 15 SB

Good

Over: DOCK DITCH

08-SBD-015-R121.43, San Bernardino, CA

Built 1965 Load: 26.9 t ADT: 22,000

INTERSTATE 10

Good

Over: DAY CANYON CHANNEL

08-SBD-010-10.12-ONT, San Bernardino, CA

Built 1943 Load: 26.9 t ADT: 226,300

MCALLEN RD

Good

Over: CALAVERAS RIVER

AT HOLMAN RD, San Joaquin, CA

Built 1970 Load: 26.9 t ADT: 8,606

SAN LUIS BAY DR

Good

Over: SEE CANYON CREEK

0.9 MI W OF US 101, San Luis Obispo, CA

Built 1940 Load: 26.9 t ADT: 6,830

STATE ROUTE 166

Good

Over: MIRANDA PINE CREEK

05-SB-166-R24.99, Santa Barbara, CA

Built 1969 Load: 26.9 t ADT: 2,700

BEAVER CREEK ROAD

Good

Over: WEST FORK BEAVER CREEK

BEAVER, Siskiyou, CA

Built 1972 Load: 26.9 t ADT: 50

DIXON AVE WEST

Good

Over: MC CUNE CREEK

1.0 MI W OF I-80, Solano, CA

Built 1958 Load: 26.9 t ADT: 2,223

STUHR ROAD

Good

Over: CCID MAIN CANAL

1.0 MI W STATE HWY 33, Stanislaus, CA

Built 1957 Load: 26.9 t ADT: 1,949

STATE ROUTE 20

Good

Over: STEER DITCH

03-COL-020-36.02, Colusa, CA

Built 1923 Load: 27.2 t ADT: 9,800

KING RD

Good

Over: TEHAMA-COLUSA CANAL

1.7 MI E OF S.R. 20, Colusa, CA

Built 1978 Load: 27.2 t ADT: 56

INTERSTATE 5

Good

Over: WALKER CREEK

03-GLE-005-R17.49, Glenn, CA

Built 1966 Load: 27.2 t ADT: 12,750

INTERSTATE 5

Good

Over: WALKER CREEK

03-GLE-005-R17.49, Glenn, CA

Built 1966 Load: 27.2 t ADT: 12,750

Showing 19,151-19,200 of 27,040 bridges

Related

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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.