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)

California45.2%48.3%GoodFairPoor (structurally 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

HERBERT AV-WB10 ON

Good

Over: EMBANKMENT

07-LA-010-20.20, Los Angeles, CA

Built 1972 Load: 17.5 t ADT: 6,900

BASQUE AVE

Good

Over: FULLERTON CREEK CHANNEL

0.1 MI N/O VALENCIA DR, Orange, CA

Built 1961 Load: 17.5 t ADT: 3,100

CROWN VALLEY PKWY

Good

Over: OSO CREEK

0.2 MI W OF I-5, Orange, CA

Built 1963 Load: 17.5 t ADT: 57,000

STATE ROUTE 49

Good

Over: NORTH FORK AMERICAN RIV

03-PLA-049-0.01, Placer, CA

Built 1948 Load: 17.5 t ADT: 9,000

YERMO RD

Good

Over: YERMO DITCH

0.2 MI E/O E. YERMO RD, San Bernardino, CA

Built 1929 Load: 17.5 t ADT: 821

INTERSTATE 8 EB

Good

Over: SWEETWATER RIVER

11-SD-008-R36.50, San Diego, CA

Built 1970 Load: 17.5 t ADT: 11,050

CARLTON OAKS DR

Good

Over: SYCAMORE CREEK

1.1 MI E OF MAST BLVD., San Diego, CA

Built 1960 Load: 17.5 t ADT: 10,375

HANSEN ROAD

Good

Over: CALIFORNIA AQUEDUCT

0.8 MI S OF W SCHULTE RD, San Joaquin, CA

Built 1965 Load: 17.5 t ADT: 1,932

CALETTI AVE

Good

Over: PRUITT CREEK

200 FT S OF SHILOH ROAD, Sonoma, CA

Built 1987 Load: 17.5 t ADT: 10,000

E 8TH STREET

Good

Over: LAKE MERRITT DRAIN

E 8TH ST & E 7TH ST, Alameda, CA

Built 1970 Load: 17.8 t ADT: 17,388

RICHVALE HIGHWAY

Good

Over: LITTLE DRY CREEK

1.2 MI E AGUAS FRIAS RD, Butte, CA

Built 1930 Load: 17.8 t ADT: 133

BURROUGH VALLEY RD

Good

Over: DRY CREEK

JUST E/O TOLLHOUSE RD, Fresno, CA

Built 1925 Load: 17.8 t ADT: 1,100

CO RD #99W

Good

Over: WALKER CREEK

0.9 MI N CO RD #39, Glenn, CA

Built 1936 Load: 17.8 t ADT: 2,051

INTERSTATE 10 EB

Good

Over: SAN GABRIEL RIVER

07-LA-010-30.84-BWP, Los Angeles, CA

Built 1956 Load: 17.8 t ADT: 116,500

N110-AV43AV43-N110

Good

Over: ARROYO SECO

07-LA-110-27.08-LA, Los Angeles, CA

Built 1940 Load: 17.8 t ADT: 5,300

STATE ROUTE 243

Good

Over: LAKE FULMOR

08-RIV-243-14.48, Riverside, CA

Built 1944 Load: 17.8 t ADT: 1,836

MAYBERRY AVENUE

Good

Over: BAUTISTA CREEK

0.2 MI. W/O FAIRVIEW AVE., Riverside, CA

Built 1960 Load: 17.8 t ADT: 2,500

MONROE STREET

Good

Over: ALL AMERICAN CANAL

50' N/O 40TH AVENUE, Riverside, CA

Built 1969 Load: 17.8 t ADT: 3,500

AVENUE 46

Good

Over: COACHELLA CANAL

0.1 MI. E/O MADISON ST, Riverside, CA

Built 1965 Load: 17.8 t ADT: 1,700

FLORIN RD

Good

Over: MORRISON CREEK

100 FT W OF EAST PKWY, Sacramento, CA

Built 1956 Load: 17.8 t ADT: 42,128

STATE ROUTE 78

Good

Over: HATFIELD CREEK

11-SD-078-40.38, San Diego, CA

Built 1922 Load: 17.8 t ADT: 9,700

PELTIER ROAD

Good

Over: MOKELUMNE RIVER

1.5 MI W LOWER SACRMTO RD, San Joaquin, CA

Built 1947 Load: 17.8 t ADT: 2,972

US HIGHWAY 101 SB

Good

Over: SAN LUIS OBISPO CREEK

05-SLO-101-R21.49, San Luis Obispo, CA

Built 1948 Load: 17.8 t ADT: 31,000

CLEAR CREEK ROAD

Good

Over: CLEAR CREEK

CLEAR CREEK, Siskiyou, CA

Built 1951 Load: 17.8 t ADT: 50

SYCAMORE AVENUE

Good

Over: PATTERSON ID MAIN CANAL

0.6 MI S/O LAS PALMAS AVE, Stanislaus, CA

Built 1920 Load: 17.8 t ADT: 377

ROAD 204

Good

Over: FRIANT-KERN CANAL

0.2 MI NORTH OF AVE 332, Tulare, CA

Built 1949 Load: 17.8 t ADT: 620

ROAD 80

Good

Over: ELK BAYOU

1.1 MI N OF AVE 160, Tulare, CA

Built 1943 Load: 17.8 t ADT: 200

LAS POSAS RD

Good

Over: ARROYO SANTA ROSA

0.2 MI N OF SANTA ROSA RD, Ventura, CA

Built 1972 Load: 17.8 t ADT: 3,100

FOOTHILL BLVD

Good

Over: SOUTH BRNCH WYMAN RAVINE

JUST SOUTH MT IDA RD, Butte, CA

Built 1926 Load: 18.1 t ADT: 1,470

BEAR CREEK ROAD

Good

Over: BEAR CREEK

0.4 MI N HAPPY VALLEY RD, Contra Costa, CA

Built 1965 Load: 18.1 t ADT: 1,040

GRANGEVILLE BL

Good

Over: BRANCH LAST CHANCE DITCH

0.4 MI W OF 14TH AVE, Kings, CA

Built 1957 Load: 18.1 t ADT: 5,800

I-5 SUP ROUTE

Good

Over: LOS ANGELES RIVER

07-LA-005S-25.70-LA, Los Angeles, CA

Built 1957 Load: 18.1 t ADT: 20,787

REDWOOD BLVD

Good

Over: NOVATO CREEK

0.6 M N ROWLAND BL, Marin, CA

Built 1947 Load: 18.1 t ADT: 9,103

OAKDALE ROAD

Good

Over: MUSTANG CREEK

0.7 MI NORTH OF EAST AVE, Merced, CA

Built 1929 Load: 18.1 t ADT: 1,884

ROBINSON CANYON RD

Good

Over: ROBINSON CANYON RIVER

0.9 MI S CARMEL VALLEY RD, Monterey, CA

Built 1950 Load: 18.1 t ADT: 3,600

FIDDYMENT RD

Good

Over: ORCHARD CREEK

0.5 MI N OF E CATLETT, Placer, CA

Built 1977 Load: 18.1 t ADT: 6,570

JOHNSON LANE

Good

Over: SAN GORGONIO OVERFLOW

08-RIV-010-R16.23-BAN, Riverside, CA

Built 1935 Load: 18.1 t ADT: 10

INTERSTATE 10

Good

Over: NEVADA STREET

08-SBD-010-28.80-RDL, San Bernardino, CA

Built 1962 Load: 18.1 t ADT: 116,500

LOOP DR

Good

Over: UP RR, AMTRAK, & LOOP DR

0.15 MI N OF AIRPORT, San Bernardino, CA

Built 1965 Load: 18.1 t ADT: 610

FOOTHILL BLVD

Good

Over: DEER CREEK

0.3 MI E/O HERMOSA AVE, San Bernardino, CA

Built 1962 Load: 18.1 t ADT: 25,400

STATE ROUTE 79

Good

Over: CHIHUAHUA CREEK

11-SD-079-49.90, San Diego, CA

Built 1941 Load: 18.1 t ADT: 1,700

PACIFIC AVE

Good

Over: CALAVERAS RIVER

0.25 MI N FULTON ST, San Joaquin, CA

Built 1921 Load: 18.1 t ADT: 18,350

MARIPOSA ROAD

Good

Over: WEBER CREEK

0.8 MI W OF JACK TONE RD, San Joaquin, CA

Built 1934 Load: 18.1 t ADT: 4,138

TAMARACK ROAD

Good

Over: BURNEY CREEK

0.1 MI S OF S.R. 299, Shasta, CA

Built 1970 Load: 18.1 t ADT: 159

WHITE HOUSE DRIVE

Good

Over: A.C.I.D. CANAL

50' WEST OF SR 273, Shasta, CA

Built 1950 Load: 18.1 t ADT: 641

FIRST STREET

Good

Over: SACRAMENTO RIVER

1.5 MI S SHERRER AV, Siskiyou, CA

Built 1965 Load: 18.1 t ADT: 316

SOUTH AVE

Good

Over: SACRAMENTO RIV OVRFLO #2

2.9 MI W OF SH 99, Tehama, CA

Built 1941 Load: 18.1 t ADT: 6,472

NO DATA ENTERED

Good

Over: LICK CREEK

NO DATA ENTERED, Trinity, CA

Built 1978 Load: 18.1 t ADT: 50

STATE ROUTE 118

Good

Over: HONDO BARRANCA

07-VEN-118-7.32, Ventura, CA

Built 1911 Load: 18.1 t ADT: 18,000

OLD LEWIS ROAD

Good

Over: CALLEGUAS CREEK

0.1 MI S/O LEWIS RD., Ventura, CA

Built 1942 Load: 18.1 t ADT: 6,700

Showing 17,601-17,650 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.