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

STATE ROUTE 91

Unknown

Over: NORWALK BLVD

07-LA-091-R18.67-CRTS, Los Angeles, CA

Built 1968 ADT: 29,500

STATE ROUTE 91

Unknown

Over: PIONEER BLVD

07-LA-091-R18.09-ART, Los Angeles, CA

Built 1968 ADT: 29,400

U.S. HIGHWAY 101

Unknown

Over: ROUTE 170

07-LA-101-11.75R-LA, Los Angeles, CA

Built 1959 ADT: 4,391

US HIGHWAY 101 SB

Unknown

Over: TUJUNGA AVE

07-LA-101-11.83L-LA, Los Angeles, CA

Built 1959 ADT: 7,500

RTE 134

Unknown

Over: ROUTES 101 & 170, RNERSD

07-LA-101-11.63L-LA, Los Angeles, CA

Built 1959 ADT: 160,000

ROUTE 170

Unknown

Over: RIVERSIDE-TUJUNGA

07-LA-170-R14.78-LA, Los Angeles, CA

Built 1962 ADT: 8,600

W134-N101 CONNECTR

Unknown

Over: RIVERSIDE DR

07-LA-134-0.04-LA, Los Angeles, CA

Built 1962 ADT: 14,000

STATE STREET

Unknown

Over: ROUTE 5

07-LA-005-18.25-LA, Los Angeles, CA

Built 1959 ADT: 226,000

U.S. HIGHWAY 101

Unknown

Over: COLDWATER CANYON AVE

07-LA-101-13.88-LA, Los Angeles, CA

Built 1959 ADT: 8,500

U.S. HIGHWAY 101

Unknown

Over: WOODMAN AVE

07-LA-101-14.89-LA, Los Angeles, CA

Built 1959 ADT: 24,000

WHITTIER BLVD

Unknown

Over: ROUTE 5 SB

07-LA-005-17.07-LA, Los Angeles, CA

Built 1960 ADT: 235,620

WHITTIER BLVD

Unknown

Over: ROUTE 5 NB & E10-N5 CONN

07-LA-005-17.07-LA, Los Angeles, CA

Built 1960 ADT: 235,620

WHITTIER BL-N101

Unknown

Over: ROUTE 5 SB

07-LA-101-S0.22-LA, Los Angeles, CA

Built 1960 ADT: 140,000

7TH STREET

Unknown

Over: INTERSTATE 5 NB

07-LA-005-16.90-LA, Los Angeles, CA

Built 1960 ADT: 235,620

E10-N5 CONNECTOR

Unknown

Over: 5, 101, CONNS, 7TH

07-LA-010-18.33-LA, Los Angeles, CA

Built 1960 ADT: 2,000

U.S. HIGHWAY 101

Unknown

Over: LOS ANGELES RI,HAZELTINE

07-LA-101-15.38-LA, Los Angeles, CA

Built 1959 ADT: 7,500

NORTH BROADWAY

Unknown

Over: ROUTE 5

07-LA-005-19.73-LA, Los Angeles, CA

Built 1960 ADT: 238,000

HUMBOLDT ST

Unknown

Over: I 5 & CONN RAMPS

07-LA-005-20.12-LA, Los Angeles, CA

Built 1962 ADT: 225,000

U.S. HIGHWAY 101

Unknown

Over: VAN NUYS BLVD

07-LA-101-15.91-LA, Los Angeles, CA

Built 1959 ADT: 26,000

PASADENA AVE

Unknown

Over: ROUTE 5 & N5-N110 CONN

07-LA-005-19.86-LA, Los Angeles, CA

Built 1960 ADT: 238,000

S5&S101-E60 CONNEC

Unknown

Over: W60-W10, SOTO ST, & RAMP

07-LA-005-16.59-LA, Los Angeles, CA

Built 1960 ADT: 42,000

EUCLID AVE ON-RAMP

Unknown

Over: NB I 5 & CONM TO WB 60

07-LA-005-16.13-LA, Los Angeles, CA

Built 1960 ADT: 39,000

EUCLID AVE OFF-RAM

Unknown

Over: SB INTERSTATE 5

07-LA-005-16.14-LA, Los Angeles, CA

Built 1960 ADT: 1,300

INTERSTATE 5 NB

Unknown

Over: SOTO STREET

07-LA-005-16.59-LA, Los Angeles, CA

Built 1960 ADT: 34,800

INTERSTATE 5 SB

Unknown

Over: ST RTE 60 WB, RAMPS,SOTO

07-LA-005-16.59-LA, Los Angeles, CA

Built 1960 ADT: 4,550

ST RTE 60 EB

Unknown

Over: I-5, CONN, RAMP

07-LA-060-R0.63-LA, Los Angeles, CA

Built 1965 ADT: 250,000

E60-S5 CONNECTOR

Unknown

Over: MARIETTA STREET

07-LA-060-R0.69-LA, Los Angeles, CA

Built 1960 ADT: 2,260

NB5-SOTO ST OFFRMP

Unknown

Over: ST RTE 60 WB, WB60-NB101

07-LA-005-16.37-LA, Los Angeles, CA

Built 1960 ADT: 189,000

BOYLE AVE

Unknown

Over: ROUTE 60 WB

07-LA-060-0.28-LA, Los Angeles, CA

Built 1960 ADT: 91,700

W60-N5 CONNECTOR

Unknown

Over: SOTO ST OFF/ON RAMPS

07-LA-060-R0.60-LA, Los Angeles, CA

Built 1966 ADT: 11,300

ROUTE I-5 N/B

Unknown

Over: W60, W60-N101 CON, RAMP

07-LA-005-16.36-LA, Los Angeles, CA

Built 1960 ADT: 50,100

MARIETTA ST

Unknown

Over: ST RTE 60 WB & CONNS

07-LA-060-R0.73-LA, Los Angeles, CA

Built 1960 ADT: 189,000

PASADENA AV-N5 ON

Unknown

Over: N5-N110 CONNECTOR RAMP

07-LA-005-20.00-LA, Los Angeles, CA

Built 1959 ADT: 12,400

METROLINK RAILROAD

Unknown

Over: METROLINK

07-LA-005-20.26-LA, Los Angeles, CA

Built 1962 ADT: 20,000

L.A. TIMES SPUR UP

Unknown

Over: W60-W10 CONN

07-LA-060-0.15-LA, Los Angeles, CA

Built 1960 ADT: 91,700

INTERSTATE 405

Unknown

Over: ROSCOE BLVD

07-LA-405-43.76-LA, Los Angeles, CA

Built 1963 ADT: 6,500

INTERSTATE 5

Unknown

Over: N BROADWAY OFF-RAMP

07-LA-005-19.50-LA, Los Angeles, CA

Built 1960 ADT: 3,300

OAK GLEN PL OC

Unknown

Over: ROUTE 2

07-LA-002-14.46-LA, Los Angeles, CA

Built 1962 ADT: 61,500

UP RR

Unknown

Over: INTERSTATE 605

07-LA-605-R14.08-PRV, Los Angeles, CA

Built 1964 ADT: 251,000

STATE RTE 14

Unknown

Over: STATE RTE 138

07-LA-014-R59.78-PMDL, Los Angeles, CA

Built 1966 ADT: 33,250

N405-S710 CONN OC

Unknown

Over: S405-S710 CONNECTOR RAMP

07-LA-405-7.55-LBCH, Los Angeles, CA

Built 1961 ADT: 15,000

S405-N710/710 SEP

Unknown

Over: ROUTE 710 & CONNECTORS

07-LA-405-7.66-LBCH, Los Angeles, CA

Built 1961 ADT: 18,300

INTERSTATE 5

Unknown

Over: SR 110 CON,ST,UP RR,RIV

07-LA-005-20.31-LA, Los Angeles, CA

Built 1962 ADT: 183,000

PEDESTRIAN WALKWAY

Unknown

Over: INTERSTATE 5

07-LA-005-19.43-LA, Los Angeles, CA

Built 1960 ADT: 238,680

STUDEBAKER RD

Unknown

Over: ROUTE 22

07-LA-022-1.14-LBCH, Los Angeles, CA

Built 1959 ADT: 102,000

183RD ST

Unknown

Over: STATE ROUTE 91

07-LA-091-R20.16-CRTS, Los Angeles, CA

Built 1969 ADT: 296,000

CARMENITA ROAD

Unknown

Over: STATE ROUTE 91

07-LA-091-R20.45-CRTS, Los Angeles, CA

Built 1969 ADT: 296,000

BLOOMFIELD AVE

Unknown

Over: STATE ROUTE 91

07-LA-091-R19.17-CRTS, Los Angeles, CA

Built 1968 ADT: 296,000

ARTESIA BLVD

Unknown

Over: STATE ROUTE 91

07-LA-091-R19.43-CRTS, Los Angeles, CA

Built 1968 ADT: 255,000

LAS VIRGENES RD

Unknown

Over: ROUTE 101

07-LA-101-31.05, Los Angeles, CA

Built 1962 ADT: 196,000

Showing 1,901-1,950 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.