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

LASSEN LANE

Unknown

Over: INTERSTATE 5

02-SIS-005-R11.17-MSHA, Siskiyou, CA

Built 1964 ADT: 20,000

S5-N MT SHASTA OFF

Unknown

Over: INTERSTATE 5

02-SIS-005-R12.06, Siskiyou, CA

Built 1964 ADT: 20,600

SISKIYOU AVE

Unknown

Over: INTERSTATE 5

02-SIS-005-2.92-DMR, Siskiyou, CA

Built 1966 ADT: 2,000

AZALEA ROAD

Unknown

Over: INTERSTATE 5

02-SIS-005-R8.29, Siskiyou, CA

Built 1964 ADT: 20,700

S5-S89 & N89-S5 CN

Unknown

Over: INTERSTATE 5

02-SIS-089-R34.60, Siskiyou, CA

Built 1964 ADT: 19,300

S MT SHASTA-S5 ON

Unknown

Over: INTERSTATE 5

02-SIS-005-R8.79, Siskiyou, CA

Built 1964 ADT: 19,300

I 5 SB

Unknown

Over: E96-N5 CON,KLAMATH RIVER

02-SIS-005-R58.18L, Siskiyou, CA

Built 1969 ADT: 255

I 5 NB

Unknown

Over: E96-N5 CON,KLAMATH RIVER

02-SIS-005-R58.18R, Siskiyou, CA

Built 1969 ADT: 255

INTERSTATE 5

Unknown

Over: STEWART SPRINGS ROAD

02-SIS-005-R23.00, Siskiyou, CA

Built 1969 ADT: 100

INTERSTATE 5

Unknown

Over: STEWART SPRINGS ROAD

02-SIS-005-R23.00, Siskiyou, CA

Built 1969 ADT: 100

LOUIE ROAD

Unknown

Over: INTERSTATE 5

02-SIS-005-R31.18, Siskiyou, CA

Built 1969 ADT: 14,800

INTERSTATE 5 SB

Unknown

Over: OBERLIN ROAD

02-SIS-005-R46.49-YRE, Siskiyou, CA

Built 1970 ADT: 4,000

INTERSTATE 5 NB

Unknown

Over: OBERLIN ROAD

02-SIS-005-R46.49-YRE, Siskiyou, CA

Built 1970 ADT: 4,000

99-97 CUTOFF

Unknown

Over: INTERSTATE 5

02-SIS-005-R38.21, Siskiyou, CA

Built 1969 ADT: 15,700

WALTERS ROAD

Unknown

Over: INTERSTATE 5

02-SIS-005-R44.31, Siskiyou, CA

Built 1970 ADT: 17,100

INTERSTATE 5 SB

Unknown

Over: STATE ROUTE 3

02-SIS-005-R48.23-YRE, Siskiyou, CA

Built 1970 ADT: 3,450

INTERSTATE 5 NB

Unknown

Over: STATE ROUTE 3

02-SIS-005-R48.23-YRE, Siskiyou, CA

Built 1970 ADT: 3,450

ABRAMS LAKE ROAD

Unknown

Over: INTERSTATE 5 SB

02-SIS-005-R13.18L, Siskiyou, CA

Built 1973 ADT: 24,600

ABRAMS LAKE ROAD

Unknown

Over: INTERSTATE 5 NB

02-SIS-005-R13.18R, Siskiyou, CA

Built 1973 ADT: 22,500

INTERSTATE 5

Unknown

Over: KILLGORE HILLS ROAD

02-SIS-005-R42.51, Siskiyou, CA

Built 1970 ADT: 2,530

INTERSTATE 5

Unknown

Over: KILLGORE HILLS ROAD

02-SIS-005-R42.51, Siskiyou, CA

Built 1970 ADT: 2,530

SLOUGH ROAD

Unknown

Over: INTERSTATE 5

02-SIS-005-R34.96, Siskiyou, CA

Built 1969 ADT: 15,700

INTERSTATE 5 SB

Unknown

Over: MINER STREET

02-SIS-005-R47.56-YRE, Siskiyou, CA

Built 1970 ADT: 2,640

ROUTE 5

Unknown

Over: MINER STREET

02-SIS-005-R47.56-YRE, Siskiyou, CA

Built 1970 ADT: 2,640

INTERSTATE 5 SB

Unknown

Over: STATE ROUTE 265

02-SIS-005-R19.85-WEED, Siskiyou, CA

Built 1973 ADT: 2,000

INTERSTATE 5 NB

Unknown

Over: STATE ROUTE 265

02-SIS-005-R19.85-WEED, Siskiyou, CA

Built 1973 ADT: 1,800

INTERSTATE 5 SB

Unknown

Over: STATE ROUTE 97

02-SIS-005-R19.05-WEED, Siskiyou, CA

Built 1973 ADT: 12,100

INTERSTATE 5 NB

Unknown

Over: STATE ROUTE 97

02-SIS-005-R19.05-WEED, Siskiyou, CA

Built 1973 ADT: 12,100

DITCH CREEK ROAD

Unknown

Over: INTERSTATE 5

02-SIS-005-R62.92, Siskiyou, CA

Built 1974 ADT: 15,300

BAILEY HILL ROAD

Unknown

Over: INTERSTATE 5

02-SIS-005-R65.52R, Siskiyou, CA

Built 1974 ADT: 15,300

INTERSTATE 5 SB

Unknown

Over: HENLEY WAY

02-SIS-005-R61.55, Siskiyou, CA

Built 1974 ADT: 1,000

INTERSTATE 5 NB

Unknown

Over: HENLEY WAY

02-SIS-005-R61.55, Siskiyou, CA

Built 1974 ADT: 1,020

HILT ROAD

Unknown

Over: INTERSTATE 5

02-SIS-005-R68.33, Siskiyou, CA

Built 2017 ADT: 15,100

ALAMO DRIVE

Unknown

Over: INTERSTATE 80 & RAMP

04-SOL-080-R25.31-VAC, Solano, CA

Built 1963 ADT: 141,000

INTERSTATE 80 WB

Unknown

Over: DAVIS STREET

04-SOL-080-R26.00-VAC, Solano, CA

Built 1963 ADT: 11,000

INTERSTATE 80 EB

Unknown

Over: DAVIS STREET

04-SOL-080-R26.00-VAC, Solano, CA

Built 1963 ADT: 11,000

UNION PACIFIC RR

Unknown

Over: INTERSTATE 80

04-SOL-080-R11.92-FRFD, Solano, CA

Built 1969 ADT: 115,000

INTERSTATE 80 WB

Unknown

Over: MASON STREET

04-SOL-080-R26.46-VAC, Solano, CA

Built 1952 ADT: 32,607

INTERSTATE 80 EB

Unknown

Over: MASON STREET

04-SOL-080-R26.46-VAC, Solano, CA

Built 1952 ADT: 32,607

WB TRAVIS BLVD

Unknown

Over: INTERSTATE 80 & RAMPS

04-SOL-080-17.93-FRFD, Solano, CA

Built 1983 ADT: 177,000

EB TRAVIS BLVD

Unknown

Over: INTERSTATE 80 & RAMPS

04-SOL-080-17.92-FRFD, Solano, CA

Built 1963 ADT: 177,000

STATE ROUTE 37

Unknown

Over: NAPA RIVER AND WILSON AV

04-SOL-037-R7.39-VAL, Solano, CA

Built 1963 ADT: 9,723

MAGAZINE STREET

Unknown

Over: INTERSTATE 80 & RAMPS

04-SOL-080-1.78-VAL, Solano, CA

Built 1956 ADT: 145,000

INTERSTATE 80

Unknown

Over: E37 - COLUMBUS PARKWAY

04-SOL-080-5.63-VAL, Solano, CA

Built 1944 ADT: 9,000

BENICIA ROAD

Unknown

Over: INTERSTATE 80 & RAMPS

04-SOL-080-2.44, Solano, CA

Built 1958 ADT: 18,100

SPRINGS ROAD

Unknown

Over: INTERSTATE 80 & RAMPS

04-SOL-080-3.23-VAL, Solano, CA

Built 1958 ADT: 145,000

STATE ROUTE 37 WB

Unknown

Over: SAGE ST

04-SOL-037-R11.22-VAL, Solano, CA

Built 1979 ADT: 3,770

STATE ROUTE 37 EB

Unknown

Over: SAGE ST

04-SOL-037-R11.22-VAL, Solano, CA

Built 1979 ADT: 3,770

AIR BASE PARKWAY

Unknown

Over: INTERSTATE 80 & RAMP

04-SOL-080-19.18-FRFD, Solano, CA

Built 1989 ADT: 177,000

TENNESSEE STREET

Unknown

Over: INTERSTATE 80 & RAMPS

04-SOL-080-3.49-VAL, Solano, CA

Built 1958 ADT: 11,350

Showing 7,051-7,100 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.