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

INTERSTATE 680

Unknown

Over: AMADOR VALLEY BLVD

04-ALA-680-R20.73, Alameda, CA

Built 1965 ADT: 15,000

34TH ST

Unknown

Over: INTERSTATE 980

04-ALA-980-1.95-OAK, Alameda, CA

Built 1969 ADT: 115,000

STATE ROUTE 24 WB

Unknown

Over: MAC ARTHUR BLVD

04-ALA-024-R2.02-OAK, Alameda, CA

Built 1969 ADT: 10,800

STATE ROUTE 24 EB

Unknown

Over: MAC ARTHUR BLVD

04-ALA-024-R2.02-OAK, Alameda, CA

Built 1969 ADT: 10,800

MLK JR-W24 ON RAMP

Unknown

Over: 40TH STREET

04-ALA-024-R2.20-OAK, Alameda, CA

Built 1970 ADT: 8,600

STATE ROUTE 24 WB

Unknown

Over: 40TH STREET

04-ALA-024-R2.20-OAK, Alameda, CA

Built 1970 ADT: 8,600

STATE ROUTE 24 EB

Unknown

Over: 40TH STREET

04-ALA-024-R2.20-OAK, Alameda, CA

Built 1970 ADT: 8,600

E24-MLK JR OFFRAMP

Unknown

Over: 40TH STREET

04-ALA-024-R2.20-OAK, Alameda, CA

Built 1970 ADT: 8,600

PALM AVE

Unknown

Over: INTERSTATE 680

04-ALA-680-M5.91-FMT, Alameda, CA

Built 1971 ADT: 140,000

WASHINGTON BLVD

Unknown

Over: INTERSTATE 680

04-ALA-680-M5.37-FMT, Alameda, CA

Built 1971 ADT: 140,000

KAY OC

Unknown

Over: STATE ROUTE 24

04-ALA-024-R5.47-OAK, Alameda, CA

Built 1965 ADT: 149,000

MLK JR-W24 ON RAMP

Unknown

Over: 42ND STREET

04-ALA-024-R2.33-OAK, Alameda, CA

Built 1970 ADT: 2,500

STATE ROUTE 24 WB

Unknown

Over: 42ND STREET

04-ALA-024-R2.33-OAK, Alameda, CA

Built 1970 ADT: 2,500

STATE ROUTE 24 EB

Unknown

Over: 42ND STREET

04-ALA-024-R2.33-OAK, Alameda, CA

Built 1970 ADT: 2,500

E24-MLK JR OFFRAMP

Unknown

Over: 42ND STREET

04-ALA-024-R2.33-OAK, Alameda, CA

Built 1970 ADT: 2,500

52ND-W24 ON RAMP

Unknown

Over: 45TH STREET

04-ALA-024-R2.47-OAK, Alameda, CA

Built 1970 ADT: 2,400

STATE ROUTE 24 WB

Unknown

Over: 45TH STREET

04-ALA-024-R2.47-OAK, Alameda, CA

Built 1970 ADT: 2,400

STATE ROUTE 24 EB

Unknown

Over: 45TH STREET

04-ALA-024-R2.47-OAK, Alameda, CA

Built 1970 ADT: 2,400

E24-52ND ST OFF-RP

Unknown

Over: 45TH STREET

04-ALA-024-R2.47-OAK, Alameda, CA

Built 1970 ADT: 2,400

52ND-W24 ON RAMP

Unknown

Over: E24-ML KING JR OFF RAMP

04-ALA-024-R2.59-OAK, Alameda, CA

Built 1970 ADT: 5,000

STATE ROUTE 24 WB

Unknown

Over: E24-ML KING JR OFF RAMP

04-ALA-024-R2.59-OAK, Alameda, CA

Built 1970 ADT: 5,000

STATE ROUTE 24 EB

Unknown

Over: E24-ML KING JR OFF RAMP

04-ALA-024-R2.59-OAK, Alameda, CA

Built 1970 ADT: 5,000

AUTO MALL PARKWAY

Unknown

Over: INTERSTATE 680

04-ALA-680-M4.02-FMT, Alameda, CA

Built 1971 ADT: 140,000

STATE ROUTE 92

Unknown

Over: INDUSTRIAL BLVD

04-ALA-092-R5.12-HAY, Alameda, CA

Built 1966 ADT: 23,000

INTERSTATE 680

Unknown

Over: INTERSTATE 580

04-ALA-680-R20.03-PLE, Alameda, CA

Built 1965 ADT: 177,000

N680-W580E580-N680

Unknown

Over: E580-N680,580,N680-W580

04-ALA-680-R20.03-PLE, Alameda, CA

Built 1965 ADT: 177,000

CLAWITER ROAD

Unknown

Over: STATE ROUTE 92

04-ALA-092-R4.48-HAY, Alameda, CA

Built 1966 ADT: 92,000

INTERSTATE 680

Unknown

Over: DUBLIN BLVD

04-ALA-680-R20.39, Alameda, CA

Built 1965 ADT: 18,000

BROADWAY

Unknown

Over: STATE ROUTE 13

04-ALA-013-R9.58-OAK, Alameda, CA

Built 1998 ADT: 142,000

N13-E24 CONNECTOR

Unknown

Over: BROADWAY

04-ALA-013-R9.57-OAK, Alameda, CA

Built 1970 ADT: 5,000

STATE ROUTE 24

Unknown

Over: STATE ROUTE 13

04-ALA-024-R5.08-OAK, Alameda, CA

Built 1970 ADT: 26,900

INTERSTATE 680

Unknown

Over: PLEASANTON-SUNOL ROAD

04-ALA-680-R15.26-PLE, Alameda, CA

Built 1967 ADT: 18,000

PLSNTN-SNL RD-S680

Unknown

Over: PLEASANTON-SUNOL ROAD

04-ALA-680-R15.26-PLE, Alameda, CA

Built 1967 ADT: 18,000

FIRST STREET

Unknown

Over: INTERSTATE 580

04-ALA-580-10.69-LVMR, Alameda, CA

Built 1965 ADT: 197,000

LAS COLINAS RD

Unknown

Over: INTERSTATE 580

04-ALA-580-11.53, Alameda, CA

Built 1972 ADT: 197,000

INTERSTATE 580

Unknown

Over: 164TH AVENUE

04-ALA-580-R31.71, Alameda, CA

Built 1965 ADT: 2,000

INTERSTATE 580

Unknown

Over: 164TH AVENUE

04-ALA-580-R31.71, Alameda, CA

Built 1965 ADT: 2,000

INTERSTATE 580

Unknown

Over: 164TH AVENUE

04-ALA-580-R31.71, Alameda, CA

Built 1965 ADT: 2,000

INTERSTATE 580 SB

Unknown

Over: 167TH AVENUE

04-ALA-580-R31.34, Alameda, CA

Built 1965 ADT: 2,000

INTERSTATE 580 NB

Unknown

Over: 167TH AVENUE

04-ALA-580-R31.34, Alameda, CA

Built 1965 ADT: 2,000

INDUSTRIAL PARKWAY

Unknown

Over: INTERSTATE 880, WARD CRK

04-ALA-880-14.54-HAY, Alameda, CA

Built 1968 ADT: 202,000

VASCO ROAD

Unknown

Over: INTERSTATE 580

04-ALA-580-9.68, Alameda, CA

Built 1970 ADT: 175,000

PASEO PADRE PKWY

Unknown

Over: INTERSTATE 680

04-ALA-680-M5.67-FMT, Alameda, CA

Built 1971 ADT: 140,000

NORTH FLYNN ROAD

Unknown

Over: INTERSTATE 580

04-ALA-580-R5.93L, Alameda, CA

Built 1969 ADT: 93,000

AIRWAY BLVD SB

Unknown

Over: INTERSTATE 580

04-ALA-580-14.98, Alameda, CA

Built 1972 ADT: 184,000

AIRWAY BLVD NB

Unknown

Over: INTERSTATE 580

04-ALA-580-14.95-LVMR, Alameda, CA

Built 1999 ADT: 184,000

STATE ROUTE 24 WB

Unknown

Over: SHATTUCK AVE

04-ALA-024-R2.90-OAK, Alameda, CA

Built 1970 ADT: 23,500

STATE ROUTE 24 EB

Unknown

Over: SHATTUCK AVE

04-ALA-024-R2.90-OAK, Alameda, CA

Built 1970 ADT: 23,500

STATE ROUTE 24 WB

Unknown

Over: 55TH STREET

04-ALA-024-R2.99-OAK, Alameda, CA

Built 1970 ADT: 8,000

STATE ROUTE 24 EB

Unknown

Over: 55TH STREET

04-ALA-024-R2.99-OAK, Alameda, CA

Built 1970 ADT: 8,000

Showing 151-200 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.