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

SR 73 SB

Unknown

Over: MOULTON PARKWAY

12-ORA-073-12.91-LGNG, Orange, CA

Built 1996 ADT: 10,000

SR 73 NB

Unknown

Over: MOULTON PARKWAY

12-ORA-073-12.91-LGNG, Orange, CA

Built 1996 ADT: 10,000

N73-LA PAZ RD OFF

Unknown

Over: MOULTON PARKWAY

12-ORA-073-12.91-LGNG, Orange, CA

Built 1996 ADT: 10,000

LA PAZ RD-S73 ONRA

Unknown

Over: PACIFIC PARK DRIVE

12-ORA-073-13.16-LGNG, Orange, CA

Built 1996 ADT: 5,000

SR 73 SB

Unknown

Over: PACIFIC PARK DRIVE

12-ORA-073-13.16-LGNG, Orange, CA

Built 1996 ADT: 5,000

SR 73 NB

Unknown

Over: PACIFIC PARK DRIVE

12-ORA-073-13.16-LGNG, Orange, CA

Built 1996 ADT: 5,000

MOULTON PKWY-N73

Unknown

Over: PACIFIC PARK DRIVE

12-ORA-073-13.16-LGNG, Orange, CA

Built 1996 ADT: 5,000

N73-LA PAZ RD OFF

Unknown

Over: PACIFIC PARK DRIVE

12-ORA-073-13.16-LGNG, Orange, CA

Built 1996 ADT: 5,000

LA PAZ RD-S73 ONRP

Unknown

Over: LA PAZ ROAD

12-ORA-073-13.40-LGNG, Orange, CA

Built 1996 ADT: 15,000

SR 73 SB

Unknown

Over: LA PAZ ROAD

12-ORA-073-13.40-LGNG, Orange, CA

Built 1996 ADT: 15,000

SR 73 NB

Unknown

Over: LA PAZ ROAD

12-ORA-073-13.40-LGNG, Orange, CA

Built 1996 ADT: 15,000

LA PAZ RD-N73 ONRP

Unknown

Over: LA PAZ ROAD

12-ORA-073-13.40-LGNG, Orange, CA

Built 1996 ADT: 15,000

ALICIA PARKWAY

Unknown

Over: STATE ROUTE 73

12-ORA-073-13.77-LGNG, Orange, CA

Built 1996 ADT: 50,000

ALISO CREEK ROAD

Unknown

Over: SR 73 & RAMPS

12-ORA-073-14.39-LGNG, Orange, CA

Built 1996 ADT: 50,000

SR 73 SB

Unknown

Over: ALISO VIEJO PKWY

12-ORA-073-14.84-LGNG, Orange, CA

Built 1996 ADT: 10,000

SR 73 NB

Unknown

Over: ALISO VIEJO PKWY

12-ORA-073-14.84-LGNG, Orange, CA

Built 1996 ADT: 10,000

GLENWD/PACIFIC DR

Unknown

Over: STATE ROUTE 73

12-ORA-073-15.25-LGNG, Orange, CA

Built 1996 ADT: 61,000

SR 73 SB

Unknown

Over: NEWPORT COAST DRIVE

12-ORA-073-21.53-IRVN, Orange, CA

Built 1996 ADT: 20,000

SR 73 NB

Unknown

Over: NEWPORT COAST DRIVE

12-ORA-073-21.53-IRVN, Orange, CA

Built 1996 ADT: 20,000

NEWPORT COAST DR

Unknown

Over: NEWPORT COAST DR-N37 ON

12-ORA-073-21.53-IRVN, Orange, CA

Built 1996 ADT: 4,070

S73-BONITA CYN OFF

Unknown

Over: BONITA CANYON DRIVE

12-ORA-073-22.50-IRVN, Orange, CA

Built 1996 ADT: 10,000

SR 73 SB

Unknown

Over: BONITA CANYON DRIVE

12-ORA-073-22.50-IRVN, Orange, CA

Built 1996 ADT: 10,000

SR 73 NB

Unknown

Over: BONITA CANYON DRIVE

12-ORA-073-22.50-IRVN, Orange, CA

Built 1996 ADT: 10,000

BONITA CYN-N73 ON

Unknown

Over: BONITA CANYON DRIVE

12-ORA-073-22.50-IRVN, Orange, CA

Built 1996 ADT: 10,000

BISON AVE

Unknown

Over: STATE ROUTE 73

12-ORA-073-23.46-IRVN, Orange, CA

Built 1996 ADT: 66,000

N5-JAMBOREE OFF-RA

Unknown

Over: STATE ROUTE 261

12-ORA-005-27.50-IRVN, Orange, CA

Built 1998 ADT: 34,600

BRYAN AVENUE

Unknown

Over: STATE ROUTE 261

12-ORA-261-1.20-TUS, Orange, CA

Built 1998 ADT: 29,000

IRVINE BOULEVARD

Unknown

Over: STATE ROUTE 261

12-ORA-261-1.60-TUS, Orange, CA

Built 1997 ADT: 29,000

PORTOLA PARKWAY

Unknown

Over: STATE ROUTE 261

12-ORA-261-3.50-TUS, Orange, CA

Built 1997 ADT: 29,000

IRVINE CENTER DR

Unknown

Over: S133 OFF RAMP

12-ORA-005-23.09-IRVN, Orange, CA

Built 1998 ADT: 3,744

S133-BARRANCA PKWY

Unknown

Over: S5-S133 CONNECTOR RAMP

12-ORA-133-M9.35-IRVN, Orange, CA

Built 1996 ADT: 6,840

S133-S5 CONNECTOR

Unknown

Over: INTERSTATE 5, ST RTE 133

12-ORA-133-M9.40-IRVN, Orange, CA

Built 1998 ADT: 37,700

STATE ROUTE 133 SB

Unknown

Over: INTERSTATE 5 & CONNECTOR

12-ORA-133-9.53-IRVN, Orange, CA

Built 1996 ADT: 8,072

STATE ROUTE 133 NB

Unknown

Over: INTERSTATE 5 & CONNECTOR

12-ORA-133-9.53-IRVN, Orange, CA

Built 1996 ADT: 243,700

S5-N133 CONN

Unknown

Over: SAND, I5, MR. WY, SR133

12-ORA-005-R24.06-IRVN, Orange, CA

Built 1998 ADT: 9,758

S133-N5 CONNECTOR

Unknown

Over: RAMPS & LOCAL STREETS

12-ORA-133-10.30-IRVN, Orange, CA

Built 1998 ADT: 16,514

TRABUCO ROAD

Unknown

Over: STATE ROUTE 133

12-ORA-133-10.90-IRVN, Orange, CA

Built 1997 ADT: 48,400

IRVINE BLVD

Unknown

Over: STATE ROUTE 133

12-ORA-133-11.90-IRVN, Orange, CA

Built 1997 ADT: 51,700

ROUTE 133 SB

Unknown

Over: PORTOLA PARKWAY

12-ORA-133-12.55-IRVN, Orange, CA

Built 1998 ADT: 11,000

ROUTE 133 NB

Unknown

Over: PORTOLA PARKWAY

12-ORA-133-12.55-IRVN, Orange, CA

Built 1998 ADT: 11,000

N241-S133 CONNECTR

Unknown

Over: STATE ROUTE 241

12-ORA-241-26.87-IRVN, Orange, CA

Built 1998 ADT: 48,000

BEE CANYON RD

Unknown

Over: SR 241 & CONNECTOR

12-ORA-241-27.39-IRVN, Orange, CA

Built 1997 ADT: 36,000

N241-W91 CONNECTOR

Unknown

Over: STATE ROUTE 91

12-ORA-241-38.76-ANA, Orange, CA

Built 1998 ADT: 17,700

N241-E91 CONNECTOR

Unknown

Over: SR 91 RAMPS & GYPSUM CYN

12-ORA-241-38.84-ANA, Orange, CA

Built 1998 ADT: 2,500

W91-S241 CONNECTOR

Unknown

Over: STATE ROUTE 91

12-ORA-091-R16.31-ANA, Orange, CA

Built 1998 ADT: 2,460

JAMBOREE-S73 ON RA

Unknown

Over: S73-UNIVERSITY DR OFF-RP

12-ORA-073-24.70-NPTB, Orange, CA

Built 1996 ADT: 5,700

CHAPMAN AVENUE

Unknown

Over: STATE ROUTE 261

12-ORA-261-6.05-ORA, Orange, CA

Built 1997 ADT: 29,000

SANTIAGO CANYON RD

Unknown

Over: STATE ROUTE 241

12-ORA-241-32.37-RSM, Orange, CA

Built 1997 ADT: 36,000

SANTIAGO-N241 ONRA

Unknown

Over: STATE ROUTE 241

12-ORA-241-32.52-RSM, Orange, CA

Built 1997 ADT: 36,000

INTERSTATE 5

Unknown

Over: CHAPMAN AVE

12-ORA-005-34.83-TUS, Orange, CA

Built 2000 ADT: 35,000

Showing 3,801-3,850 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.