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

BARTD

Unknown

Over: MOWRY AVE

0.1 MI NW/O PARKSIDE DR., Alameda, CA

Built 1968 ADT: 54,228

BARTD

Unknown

Over: MOWRY AVE

0.1 MI NW/O PARKSIDE DR., Alameda, CA

Built 1968 ADT: 54,228

UP RR

Unknown

Over: TENNYSON ROAD

0.2 MI W/O WHITMAN ST, Alameda, CA

Built 1968 ADT: 26,415

BARTD

Unknown

Over: TENNYSON ROAD

0.2 MI W/O MISSION BLVD, Alameda, CA

Built 1968 ADT: 45,462

BARTD

Unknown

Over: WEST A STREET

0.2 MI W/O MISSION BLVD, Alameda, CA

Built 1968 ADT: 41,127

BARTD

Unknown

Over: B STREET

0.2 MI W/O MISSION BLVD, Alameda, CA

Built 1968 ADT: 22,076

BARTD

Unknown

Over: HIGH STREET

AT SAN LEANDRO ST, Alameda, CA

Built 1968 ADT: 17,590

BARTD

Unknown

Over: FRUITVALE AVE

BTWN SAN LEANDRO & E12TH, Alameda, CA

Built 1968 ADT: 17,147

BUCHANAN ST

Unknown

Over: UP RR, BNSF RY, & AMTRAK

NEAR I-80, Alameda, CA

Built 1963 ADT: 10,629

BARTD (C5003A)

Unknown

Over: MACARTHUR BLVD

AT SR 24, Alameda, CA

Built 1968 ADT: 21,491

BARTD (C5003B)

Unknown

Over: MACARTHUR BLVD

AT SR 24, Alameda, CA

Built 1968 ADT: 21,491

BARTD (C5003C)

Unknown

Over: MACARTHUR BLVD

AT SR 24, Alameda, CA

Built 1968 ADT: 21,491

BARTD (C5003D)

Unknown

Over: MACARTHUR BLVD

AT SR 24, Alameda, CA

Built 1968 ADT: 21,491

UP RR,BNSF,ACE

Unknown

Over: N P STREET

0.1 MI S CHESTNUT ST, Alameda, CA

Built 1974 ADT: 400

UP RR,BNSF,ACE

Unknown

Over: LIVERMORE AVE

BETW CHESTNUT/RAILROAD, Alameda, CA

Built 1974 ADT: 400

BARTD

Unknown

Over: LEWELLING BLVD

0.4 MI W/O MISSION BLVD, Alameda, CA

Built 1968 ADT: 24,100

BARTD

Unknown

Over: SEMINARY AVE

JUST NE/O SAN LEANDRO ST, Alameda, CA

Built 1968 ADT: 11,000

HEGENBERGER ROAD

Unknown

Over: BARTD, UPRR, SAN LEANDRO

0.4 MI SOUTH OF 66TH AVE, Alameda, CA

Built 1966 ADT: 2,000

UP RR

Unknown

Over: ORCHARD AVE

0.15 MI SW/O SR 238, Alameda, CA

Built 1970 ADT: 10,106

BARTD

Unknown

Over: ORCHARD AVE

0.1 MI W/O MISSION BLVD, Alameda, CA

Built 1970 ADT: 14,200

BARTD

Unknown

Over: 105TH AVE

AT SAN LEANDRO ST, Alameda, CA

Built 1968 ADT: 14,200

WHITMAN ST

Unknown

Over: HARDER ROAD

HARDER RD, Alameda, CA

Built 1970 ADT: 18,907

UP RR

Unknown

Over: HARDER ROAD

0.2 MI W/O SR 238, Alameda, CA

Built 1970 ADT: 18,907

BARTD

Unknown

Over: HARDER RD

0.1 MI W/O MISSION BLVD, Alameda, CA

Built 1970 ADT: 6,610

UP RR & BNSF RY

Unknown

Over: PASEO PADRE PARKWAY

0.2 MI N/O PERALTA BLVD, Alameda, CA

Built 1975 ADT: 28,500

UP RR

Unknown

Over: ASHLAND AVE

N/O SR 238, Alameda, CA

Built 1960 ADT: 9,257

BARTD

Unknown

Over: ASHLAND AVE

0.2 MI N/O 238, Alameda, CA

Built 1960 ADT: 15,500

ELGIN ST

Unknown

Over: ASHLAND AVE

ELGIN ST & ASHLAND AVE, Alameda, CA

Built 1960 ADT: 6,000

BARTD

Unknown

Over: 75TH AVE

AT SAN LEANDRO ST, Alameda, CA

Built 1968 ADT: 6,635

BARTD (R3002)

Unknown

Over: SOLANO AVE

0.3 MI E/O SAN PABLO AVE, Alameda, CA

Built 1968 ADT: 19,700

BARTD (R3002)

Unknown

Over: MARIN AVE

0.3 MI E/O SAN PABLO AVE, Alameda, CA

Built 1968 ADT: 20,604

BARTD (R3002)

Unknown

Over: GILMAN STREET

0.2 MI W/O HOPKINS ST, Alameda, CA

Built 1968 ADT: 17,500

BARTD

Unknown

Over: MARTIN LUTHER KING BLVD

63RD ST, Alameda, CA

Built 1968 ADT: 30,000

BARTD (R3001)

Unknown

Over: 55TH STREET

AT MLK JR WY, Alameda, CA

Built 1968 ADT: 8,040

BARTD (R3001)

Unknown

Over: MARTIN LUTHER KING JR WY

ONRAMP RTE 24 NEAR 47TH, Alameda, CA

Built 1968 ADT: 600

BARTD

Unknown

Over: COLLEGE AVE

AT SR 24, Alameda, CA

Built 1968 ADT: 23,400

BARTD (C3003 A&B)

Unknown

Over: FOREST STREET

MILES S4, Alameda, CA

Built 1968 ADT: 600

BARTD

Unknown

Over: HUDSON STREET

CLAREMONT ST, Alameda, CA

Built 1968 ADT: 600

BARTD (C3002)

Unknown

Over: CLAREMONT STREET

0.1 MI S HUDSON, Alameda, CA

Built 1968 ADT: 2,000

BARTD (C5010)

Unknown

Over: TELEGRAPH AVE

56TH ST, Alameda, CA

Built 1968 ADT: 2,000

BARTD (C5008)

Unknown

Over: SHATTUCK AVE

54TH ST, Alameda, CA

Built 1968 ADT: 2,000

BARTD (C5005 A&B)

Unknown

Over: 45TH STREET

0.1 MI E M L KING JR WAY, Alameda, CA

Built 1968 ADT: 600

BARTD (C5004)

Unknown

Over: 42ND STREET

0.1 MI E M L KING JR WAY, Alameda, CA

Built 1968 ADT: 600

BARTD

Unknown

Over: 40TH STREET

0.1 MI E M L LING JR WAY, Alameda, CA

Built 1968 ADT: 600

BARTD (C5001)

Unknown

Over: 29TH STREET

0.1 MI E M L LING JR WAY, Alameda, CA

Built 1968 ADT: 600

BARTD (C3001)

Unknown

Over: 27TH STREET

WEST NORTHGATE AVE, Alameda, CA

Built 1968 ADT: 600

BARTD

Unknown

Over: NORTHGATE AVE

WEST NORTHGATE AVE, Alameda, CA

Built 1968 ADT: 600

BARTD

Unknown

Over: MARTIN LUTHER KING JR WY

BTWN 4TH & 5TH ST, Alameda, CA

Built 1968 ADT: 1,000

BARTD (M3001)

Unknown

Over: MARKET STREET

BTWN 4TH & 5TH ST, Alameda, CA

Built 1968 ADT: 600

BARTD (M3001)

Unknown

Over: 5TH STREET

BTWN MKT ST & FILBERT ST, Alameda, CA

Built 1968 ADT: 1,000

Showing 351-400 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.