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 9 NB

Good

Over: HILLSIDE

05-SCR-009-4.27, Santa Cruz, CA

Built 1922 Load: 24.3 t ADT: 5,000

EAST ZAYANTE RD

Good

Over: ZAYANTE CREEK

6.3 MI N GRAHAM HILL RD, Santa Cruz, CA

Built 1942 Load: 24.3 t ADT: 2,000

CLARK CREEK ROAD

Good

Over: CLARK CREEK

5.2 MI NW OF SR 89, Shasta, CA

Built 1950 Load: 24.3 t ADT: 200

TWIN VIEW BLVD

Good

Over: BOULDER CREEK

0.2 MI NE OF SR 273, Shasta, CA

Built 1936 Load: 24.3 t ADT: 3,651

CLEAR CR RD

Good

Over: DRY CREEK

1 MI W CLOVERDALE RD, Shasta, CA

Built 1955 Load: 24.3 t ADT: 884

LAKE BLVD

Good

Over: BUCKEYE CREEK

1 MI N KESWICK DAM RD, Shasta, CA

Built 1968 Load: 24.3 t ADT: 3,670

LAKE BLVD

Good

Over: CHURN CREEK

AT TOYON AVE, Shasta, CA

Built 1970 Load: 24.3 t ADT: 1,800

LAWRENCE RD

Good

Over: WEST BRANCH CHURN CREEK

JUST SOUTH OF HARTNELL AV, Shasta, CA

Built 1960 Load: 24.3 t ADT: 1,855

TWIN VIEW BLVD

Good

Over: HIRST BARRANCA

0.2 MI NORTH OF OASIS RD, Shasta, CA

Built 1917 Load: 24.3 t ADT: 761

CANBY RD

Good

Over: WEST BRANCH CHURN CREEK

0.3 MI N/O SR 44, Shasta, CA

Built 1968 Load: 24.3 t ADT: 4,761

EASTSIDE ROAD

Good

Over: A.C.I.D. CANAL

0.7 MI N OF S BONYVIEW RD, Shasta, CA

Built 1966 Load: 24.3 t ADT: 3,728

GAS PT RD

Good

Over: LUDWIG GULCH

3.0 MI WEST OF I-5, Shasta, CA

Built 1940 Load: 24.3 t ADT: 3,206

S COW CREEK ROAD

Good

Over: PINE TIMBER GULCH

5.8 MI NE OF S.R. 44, Shasta, CA

Built 1965 Load: 24.3 t ADT: 10

FIRST STREET

Good

Over: CROWLEY GULCH

.2 MI W/O SR5, Shasta, CA

Built 1960 Load: 24.3 t ADT: 1,500

WILDCAT RD

Good

Over: ASH CREEK

0.2 MI E OF ASH CRK RD, Shasta, CA

Built 1960 Load: 24.3 t ADT: 200

ASH CR RD

Good

Over: ASH CREEK TRIBUTARY

7.6 MI E PARKVILLE RD, Shasta, CA

Built 1955 Load: 24.3 t ADT: 200

COLLEGE VIEW DR

Good

Over: OLD OREGON DITCH

0.1 MI E/O OLD OREGON T, Shasta, CA

Built 1968 Load: 24.3 t ADT: 250

SWEDE CREEK RD

Good

Over: OAT CREEK

0.7 MI N OLD 44 DRIVE, Shasta, CA

Built 1970 Load: 24.3 t ADT: 850

BEAR MOUNTAIN RD

Good

Over: DRY CREEK

100 FEET S DRY CREEK RD, Shasta, CA

Built 1950 Load: 24.3 t ADT: 641

STATE ROUTE 96

Good

Over: SANDY BAR CREEK

02-SIS-096-R9.11, Siskiyou, CA

Built 1942 Load: 24.3 t ADT: 330

INTERSTATE 5

Good

Over: YREKA CREEK

02-SIS-005-R46.79-YRE, Siskiyou, CA

Built 1970 Load: 24.3 t ADT: 16,600

LOPES ROAD

Good

Over: JAMESON CANYON CREEK

1.0 MI S OF I-80, Solano, CA

Built 1915 Load: 24.3 t ADT: 4,470

SWAN RD

Good

Over: V DRAIN

1.5 MI W LIBERTY ISLND RD, Solano, CA

Built 1957 Load: 24.3 t ADT: 134

STATE ROUTE 128

Good

Over: HEADER DRAW

04-SON-128-5.26, Sonoma, CA

Built 1900 Load: 24.3 t ADT: 2,650

STATE ROUTE 116

Good

Over: BLUCHER CREEK

04-SON-116-29.83, Sonoma, CA

Built 1938 Load: 24.3 t ADT: 16,550

STATE ROUTE 116

Good

Over: GOSSAGE CREEK

04-SON-116-33.37, Sonoma, CA

Built 1936 Load: 24.3 t ADT: 16,000

STATE ROUTE 121

Good

Over: BRANCH ARROYO SECO

04-SON-121-8.51, Sonoma, CA

Built 1922 Load: 24.3 t ADT: 19,000

WB STATE ROUTE 12

Good

Over: SANTA ROSA AVE

04-SON-012-R16.26-SRO, Sonoma, CA

Built 1964 Load: 24.3 t ADT: 36,500

RIVER RD

Good

Over: GREEN VALLEY CREEK

6.5 MI INTX WITH SR 116, Sonoma, CA

Built 1970 Load: 24.3 t ADT: 12,700

RINCONADA DR

Good

Over: DUCKER CREEK

0.3 M SOUTH OF MONTECITO, Sonoma, CA

Built 1960 Load: 24.3 t ADT: 2,000

DRY CREEK RD

Good

Over: FOSS CREEK

1/4 MILE EAST OF SR 101, Sonoma, CA

Built 1962 Load: 24.3 t ADT: 17,950

COFFEY LN

Good

Over: PAULINE CREEK

COFFEY LN, Sonoma, CA

Built 1960 Load: 24.3 t ADT: 7,000

LOWELL AVE

Good

Over: GOSSAGE CREEK

0.06 MI E GILMORE AVE, Sonoma, CA

Built 1972 Load: 24.3 t ADT: 150

STONY POINT RD

Good

Over: COLGAN CR FLD CNTRL CHAN

0.1 MI N/O TODD RD, Sonoma, CA

Built 1962 Load: 24.3 t ADT: 13,600

SKILLMAN LANE

Good

Over: WILSON CREEK

EAST OF THOMPSON LANE, Sonoma, CA

Built 1960 Load: 24.3 t ADT: 1,600

SOUTH ELY ROAD

Good

Over: SOUTH ELY CREEK

0.8 MI SE FRATES RD, Sonoma, CA

Built 1961 Load: 24.3 t ADT: 200

MARKET ST

Good

Over: DUTCH BILL CREEK

JUST S BOHEMIAN HWY, Sonoma, CA

Built 1958 Load: 24.3 t ADT: 200

CAZADERO HWY

Good

Over: ST ELMO CREEK

EAST OF NEWMARK AVE, Sonoma, CA

Built 1957 Load: 24.3 t ADT: 1,550

ROBLAR RD

Good

Over: AMERICANO CREEK

0.7 MI E JCT VALY FORD RD, Sonoma, CA

Built 1964 Load: 24.3 t ADT: 1,200

STATE ROUTE 113

Good

Over: PHEASANT CANAL

03-SUT-113-9.15, Sutter, CA

Built 1931 Load: 24.3 t ADT: 5,600

VARNEY ROAD

Good

Over: ROBBINS (DRAINAGE) CANAL

@ RECLAMATION ROAD, Sutter, CA

Built 1970 Load: 24.3 t ADT: 101

PLEASANT GROVE RD

Good

Over: BUNKHAM SLOUGH

11.5 MI N/O RIEGO RD, Sutter, CA

Built 1937 Load: 24.3 t ADT: 2,296

FRANKLIN RD

Good

Over: WADSWORTH DITCH

1.4 MI W OF ACACIA RD, Sutter, CA

Built 1930 Load: 24.3 t ADT: 280

INTERSTATE 5

Good

Over: BIGGS CREEK

02-TEH-005-32.36, Tehama, CA

Built 1940 Load: 24.3 t ADT: 36,500

INTERSTATE 5 SB

Good

Over: GAY CREEK

02-TEH-005-R0.11, Tehama, CA

Built 1966 Load: 24.3 t ADT: 12,300

OLD HWY 99 W

Good

Over: GAY CREEK

0.2 MI N OF GLENN CO LINE, Tehama, CA

Built 1914 Load: 24.3 t ADT: 2,001

OLD HWY 99 W

Good

Over: HALL CREEK

6.2 MI N GLENN CO RD, Tehama, CA

Built 1914 Load: 24.3 t ADT: 3,348

OLD HWY 99 W

Good

Over: SCHRAMM CREEK

6.3 MI N GLENN CO LINE, Tehama, CA

Built 1914 Load: 24.3 t ADT: 3,348

CORNING RD

Good

Over: HOUGHTON CREEK

0.3 MI W FREMN-SCHLHSE RD, Tehama, CA

Built 1965 Load: 24.3 t ADT: 1,640

CORNING ROAD

Good

Over: NORTH FORK JEWETT CREEK

0.3 MI W/O I-5, Tehama, CA

Built 1971 Load: 24.3 t ADT: 5,000

Showing 18,751-18,800 of 27,040 bridges

Related

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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.