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

SLAUGHTER HOUSE RD

Good

Over: ESTERO AMERICANO

JUST SOUTH OF SR 1, Marin, CA

Built 1990 Load: 32.4 t ADT: 125

SOUTH NOVATO BLVD

Good

Over: WARNER CREEK

0.2 MI S DIABLO AVE, Marin, CA

Built 1992 Load: 32.4 t ADT: 19,460

LAGUNITAS ROAD

Good

Over: CORTE MADERA CREEK

JUST W/O SIR FRANCIS DRAK, Marin, CA

Built 2011 Load: 32.4 t ADT: 3,500

NORTH HAMILTON PKW

Good

Over: PACHECO CREEK

AT ABERDEEN RD, Marin, CA

Built 2001 Load: 32.4 t ADT: 5,000

CENTER ROAD

Good

Over: VINEYARD CREEK

AT WILMAC CT, Marin, CA

Built 2008 Load: 32.4 t ADT: 5,000

SOUTHERN HEIGHTS B

Good

Over: HILLSIDE

JCT MEYER ROAD, Marin, CA

Built 2021 Load: 32.4 t ADT: 100

STATE ROUTE 49

Good

Over: E FORK CHOWCHILLA RIVER

10-MPA-049-2.87, Mariposa, CA

Built 1972 Load: 32.4 t ADT: 3,725

INDIAN PEAK ROAD

Good

Over: M FORK CHOWCHILLA RIVER

2.5 MI N/O MADERA CO LINE, Mariposa, CA

Built 1993 Load: 32.4 t ADT: 140

FORESTA ROAD

Good

Over: CRANE CREEK

2.13 MILE SW OF SR 41, Mariposa, CA

Built 2013 Load: 32.4 t ADT: 10

DOGTOWN ROAD

Good

Over: BEAN CREEK

0.1 MI S BONDURANT RD, Mariposa, CA

Built 2016 Load: 32.4 t ADT: 180

BONDURANT MINE RD

Good

Over: BEAN CREEK

0.1 MI EAST DOG TOWN ROAD, Mariposa, CA

Built 2016 Load: 32.4 t ADT: 180

DARRAH ROAD

Good

Over: WEST FK CHOWCHILLA RIVER

0.7 MI N OF SR 49, Mariposa, CA

Built 2023 Load: 32.4 t ADT: 1,460

STATE ROUTE 128

Good

Over: MILL CREEK

01-MEN-128-17.88, Mendocino, CA

Built 1931 Load: 32.4 t ADT: 3,300

STATE ROUTE 162

Good

Over: TOWN CREEK

01-MEN-162-28.74, Mendocino, CA

Built 1983 Load: 32.4 t ADT: 2,200

STATE ROUTE 20

Good

Over: BROADDUS CREEK

01-MEN-020-31.20, Mendocino, CA

Built 1991 Load: 32.4 t ADT: 2,700

STATE ROUTE 20

Good

Over: BROADDUS CREEK

01-MEN-020-31.56, Mendocino, CA

Built 1991 Load: 32.4 t ADT: 2,700

RTE 101S - RTE 20W

Good

Over: HAEHL CREEK

01-MEN-101-R43.79, Mendocino, CA

Built 2016 Load: 32.4 t ADT: 8,000

RTE 20E - RTE 101N

Good

Over: HAEHL CREEK

01-MEN-101-R43.79, Mendocino, CA

Built 2016 Load: 32.4 t ADT: 8,000

STATE ROUTE 1

Good

Over: GREENWOOD CREEK

01-MEN-001-33.63, Mendocino, CA

Built 2014 Load: 32.4 t ADT: 1,100

STATE ROUTE 1

Good

Over: PUDDING CREEK

01-MEN-001-62.12-FBG, Mendocino, CA

Built 1959 Load: 32.4 t ADT: 23,950

US HIGHWAY 101

Good

Over: HAEHL CREEK

01-MEN-101-45.52, Mendocino, CA

Built 2016 Load: 32.4 t ADT: 18,000

U.S. HIGHWAY 101

Good

Over: BAKER CREEK

01-MEN-101-R33.52, Mendocino, CA

Built 1971 Load: 32.4 t ADT: 19,000

US HIGHWAY 101

Good

Over: RAILROAD TRACKS

01-MEN-101-47.83, Mendocino, CA

Built 2016 Load: 32.4 t ADT: 18,000

US HIGHWAY 101

Good

Over: UPP CREEK

01-MEN-101-48.29, Mendocino, CA

Built 2016 Load: 32.4 t ADT: 16,000

ROUTE 101S OFFRAMP

Good

Over: UPP CREEK

01-MEN-101-48.27, Mendocino, CA

Built 2016 Load: 32.4 t ADT: 8,000

ROUTE 101N ONRAMP

Good

Over: UPP CREEK

01-MEN-101-48.31, Mendocino, CA

Built 2016 Load: 32.4 t ADT: 8,000

U.S. HIGHWAY 101

Good

Over: CO RD,SOUTH FORK EEL RIV

01-MEN-101-R106.57, Mendocino, CA

Built 1970 Load: 32.4 t ADT: 6,100

U.S. HIGHWAY 101

Good

Over: AUSTIN CREEK

01-MEN-101-R23.82, Mendocino, CA

Built 1964 Load: 32.4 t ADT: 20,900

STATE ROUTE 162

Good

Over: MIDDLE FORK EEL RIVER

01-MEN-162-15.14, Mendocino, CA

Built 1985 Load: 32.4 t ADT: 860

STATE ROUTE 1

Good

Over: TEN MILE RIVER

01-MEN-001-69.65, Mendocino, CA

Built 2009 Load: 32.4 t ADT: 1,500

US HIGHWAY 101

Good

Over: FROG WOMAN SLIDE

01-MEN-101-4.95, Mendocino, CA

Built 1998 Load: 32.4 t ADT: 13,300

STATE ROUTE 1

Good

Over: MILL CREEK

01-MEN-001-R64.91, Mendocino, CA

Built 1993 Load: 32.4 t ADT: 5,600

STATE ROUTE 1

Good

Over: HATHAWAY CREEK

01-MEN-001-17.67, Mendocino, CA

Built 1995 Load: 32.4 t ADT: 2,100

STATE ROUTE 1

Good

Over: OCEANSIDE BLUFF

01-MEN-001-82.05, Mendocino, CA

Built 1999 Load: 32.4 t ADT: 1,185

STATE ROUTE 001

Good

Over: NOYO RIVER & HARBOR DR

01-MEN-001-60.23-FBG, Mendocino, CA

Built 2005 Load: 32.4 t ADT: 23,950

U.S. HIGHWAY 101

Good

Over: SOUTH FORK EEL RIVER

01-MEN-101-R100.02, Mendocino, CA

Built 2009 Load: 32.4 t ADT: 6,100

STATE ROUTE 222

Good

Over: RUSSIAN RIVER

01-MEN-222-0.98, Mendocino, CA

Built 2011 Load: 32.4 t ADT: 8,000

US HIGHWAY 101

Good

Over: UPP CREEK

01-MEN-101U-48.14, Mendocino, CA

Built 2017 Load: 32.4 t ADT: 8,000

ROUTE 271

Good

Over: MC COY CREEK

01-MEN-271-17.86, Mendocino, CA

Built 2019 Load: 32.4 t ADT: 150

SR 001

Good

Over: WESTPORT NORTH SIDEHILL

01-MEN-001-83.30, Mendocino, CA

Built 2018 Load: 32.4 t ADT: 830

OLD RIVER ROAD

Good

Over: MORRISON CREEK

4 MI S SR 222, Mendocino, CA

Built 1996 Load: 32.4 t ADT: 1,115

UVA DRIVE

Good

Over: FORSYTHE CREEK

1/4 MI S OF SR 101, Mendocino, CA

Built 1990 Load: 32.4 t ADT: 1,830

BRANSCOMB ROAD

Good

Over: KENNY CREEK

1.2 MI W/O BRANSCOMB RD, Mendocino, CA

Built 1957 Load: 32.4 t ADT: 104

COUNTY RD 110

Good

Over: JOHNSON CREEK

0.7 MI S/E JCT CR 109, Mendocino, CA

Built 1993 Load: 32.4 t ADT: 114

BLOSSER LANE

Good

Over: BROADDUS CREEK

JUST SOUTH SR 20, Mendocino, CA

Built 1989 Load: 32.4 t ADT: 750

FLYNN CREEK RD 135

Good

Over: MARSH CREEK

CR 135 MP8.10, S COMPTCHE, Mendocino, CA

Built 2007 Load: 32.4 t ADT: 670

FLYNN CREEK RD 135

Good

Over: ALBION RIVER

CR 135 MP8.13, S COMPTCHE, Mendocino, CA

Built 2008 Load: 32.4 t ADT: 670

CR 110

Good

Over: FELIZ CREEK

0.1 MI SE JCT WITH CR 109, Mendocino, CA

Built 2013 Load: 32.4 t ADT: 117

MUIR MILL RD 301C

Good

Over: BAECHTEL CREEK

2 MI SW OF SR 20-MAIN ST, Mendocino, CA

Built 2016 Load: 32.4 t ADT: 311

REEVES CANYON ROAD

Good

Over: FORSYTHE CREEK

0.5 MI WEST OF US 101, Mendocino, CA

Built 2018 Load: 32.4 t ADT: 130

Showing 21,251-21,300 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.