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

GURR ROAD

Good

Over: SOUTH SLOUGH

0.3 MI N OAK AVENUE, Merced, CA

Built 1930 Load: 32.4 t ADT: 926

LETTEAU AVENUE

Good

Over: LATERAL #6

0.5 MI E OF MERCED AVE, Merced, CA

Built 2009 Load: 32.4 t ADT: 2,712

BRAZO ROAD

Good

Over: NEWMAN WASTEWAY

0.6 MI E CANAL SCHOOL RD, Merced, CA

Built 1968 Load: 32.4 t ADT: 890

CR J18

Good

Over: MERCED RIVER

KELLEY ROAD, Merced, CA

Built 1981 Load: 32.4 t ADT: 1,196

SULTANA DRIVE

Good

Over: UP RR

0.12 MI WEST OF SR 99, Merced, CA

Built 2008 Load: 32.4 t ADT: 11,000

GURR ROAD

Good

Over: BLACK RASCAL CREEK

1.1 KM N OF ROUTE 140, Merced, CA

Built 1996 Load: 32.4 t ADT: 700

BIRD STREET

Good

Over: HAMMATT LATERAL

0.6 MI W CRESY ROAD, Merced, CA

Built 2005 Load: 32.4 t ADT: 200

KAHLON ROAD

Good

Over: DEADMAN CREEK

1.6 MI SE OF LE GRAND RD, Merced, CA

Built 1987 Load: 32.4 t ADT: 200

SILVEIRA WAY

Good

Over: DEADMAN CREEK

1.8 MI SE OF LE GRAND RD, Merced, CA

Built 2015 Load: 32.4 t ADT: 200

MARINO WAY

Good

Over: MARIPOSA CREEK

0.1 MI SE OF MARIPOSA RD, Merced, CA

Built 2015 Load: 32.4 t ADT: 1,000

ATWATER-MER EXPY

Good

Over: ASHBY ROAD "FUTURE"

0.5 MI N OF HWY99, Merced, CA

Built 2017 Load: 32.4 t ADT: 977

GREEN SANDS AVE

Good

Over: CANAL CREEK

0.5 MI E OF BUHACH RD, Merced, CA

Built 2017 Load: 32.4 t ADT: 977

AVENUE TWO

Good

Over: CANAL CREEK

0.1 MI WEST OF GURR ROAD, Merced, CA

Built 2011 Load: 32.4 t ADT: 3,907

ALFALFA AVE

Good

Over: OWENS CREEK

1.0 MI S OF EAST.MISSION, Merced, CA

Built 2007 Load: 32.4 t ADT: 846

WESTSIDE BLVD OH

Good

Over: UP RR TRACKS

0.1 MI NE/O CENTRAL AVE, Merced, CA

Built 2008 Load: 32.4 t ADT: 1,050

SANTA FE AVE

Good

Over: DEADMAN CREEK

1.8 MI S OF LE GRAND, Merced, CA

Built 2015 Load: 32.4 t ADT: 553

DICKENSON FERRY RD

Good

Over: BEAR CREEK

0.05 MI E OF QUINLEY AVE, Merced, CA

Built 2023 Load: 32.4 t ADT: 252

CANAL SCHOOL ROAD

Good

Over: NEWMAN WASTEWAY

0.3 MI N PRESTON ROAD, Merced, CA

Built 2013 Load: 32.4 t ADT: 2,972

WEST YOSEMITE AVE

Good

Over: FAHRENS CREEK

0.2 MI WEST OF R STREET, Merced, CA

Built 2007 Load: 32.4 t ADT: 5,812

R STREET

Good

Over: FAHRENS CREEK

AT PACIFIC DRIVE, Merced, CA

Built 2007 Load: 32.4 t ADT: 5,812

M STREET

Good

Over: COTTONWOOD CREEK

0.2 MI SO. OF CARDELLA RD, Merced, CA

Built 2004 Load: 32.4 t ADT: 5,812

GOVE ROAD

Good

Over: HARTLEY SLOUGH

0.15 MI SO. OF RICE ROAD, Merced, CA

Built 2008 Load: 32.4 t ADT: 500

LA GRANGE ROAD

Good

Over: DRY CREEK

4 MI N MERCED FALLS ROAD, Merced, CA

Built 2021 Load: 32.4 t ADT: 2,000

E HARVEY PETIT RD

Good

Over: DUTCHMAN CREEK

0.5 MI SE OF PLAINSBURG R, Merced, CA

Built 2013 Load: 32.4 t ADT: 300

SOUTH VISTA AVE

Good

Over: DUTCHMAN CREEK

0.8 MI SE OF E SANDY MUSH, Merced, CA

Built 1987 Load: 32.4 t ADT: 200

MORAGA AVE

Good

Over: OUTSIDE CANAL

1.0 MI N OF SR 152, Merced, CA

Built 2018 Load: 32.4 t ADT: 38

TURNER ISLAND RD

Good

Over: WEST DELTA CANAL

0.4 MI S OF HENRY MILLER, Merced, CA

Built 2023 Load: 32.4 t ADT: 1,595

RANCHERS ROAD

Good

Over: FAIRFIELD CANAL

0.5 MI EAST OF LAKE RD, Merced, CA

Built 2005 Load: 32.4 t ADT: 99

SCHOLARS LANE

Good

Over: FAIRFIELD CANAL

0.5 MI EAST OF LAKE RD, Merced, CA

Built 2005 Load: 32.4 t ADT: 99

COTTONWOOD LOOP RD

Good

Over: FAIRFIELD CANAL

0.5 MI EAST ON N LAKE RD, Merced, CA

Built 2020 Load: 32.4 t ADT: 500

STATE ROUTE 299

Good

Over: CLOVERSWALE CREEK

02-MOD-299-27.43, Modoc, CA

Built 1991 Load: 32.4 t ADT: 2,000

STATE ROUTE 299

Good

Over: NORTH FORK ASH CREEK

02-MOD-299-3.38, Modoc, CA

Built 2012 Load: 32.4 t ADT: 1,110

STATE ROUTE 299

Good

Over: CALDWELL CREEK

02-MOD-299-23.34, Modoc, CA

Built 2019 Load: 32.4 t ADT: 1,350

STATE ROUTE 299

Good

Over: BUTTE CREEK

02-MOD-299-0.51, Modoc, CA

Built 2020 Load: 32.4 t ADT: 1,400

STATE ROUTE 299

Good

Over: ASH CREEK

02-MOD-299-1.02, Modoc, CA

Built 2020 Load: 32.4 t ADT: 1,600

CR 90

Good

Over: HALLS CREEK

1.0 MI E C.R. 91, Modoc, CA

Built 1995 Load: 32.4 t ADT: 25

CO RD 69

Good

Over: PIT RIVER

2.7 MI S HWY 299, Modoc, CA

Built 2002 Load: 32.4 t ADT: 19

IRR CO ROAD 90

Good

Over: PIT RIVER

MOD CTY, Modoc, CA

Built 2001 Load: 32.4 t ADT: 25

IRR CO RD 90

Good

Over: PIT RIVER OVERFLOW

0.3 MI EAST OF LOOKOUT RD, Modoc, CA

Built 2001 Load: 32.4 t ADT: 25

JONES LN -CO RD 61

Good

Over: WESTSIDE CANAL

0.7 MI W OF SH 395, Modoc, CA

Built 2013 Load: 32.4 t ADT: 50

COUNTY ROAD 45

Good

Over: PINE CREEK

0.2 MI S OF STATELINE RD, Modoc, CA

Built 2016 Load: 32.4 t ADT: 20

COUNTY ROAD 86

Good

Over: RUSH CREEK

EAST OF STATE ROUTE 299, Modoc, CA

Built 2019 Load: 32.4 t ADT: 100

U.S. HIGHWAY 395

Good

Over: WEST WALKER RIVER

09-MNO-395-96.00, Mono, CA

Built 1987 Load: 32.4 t ADT: 6,950

U.S. HIGHWAY 395

Good

Over: LITTLE WALKER RIVER

09-MNO-395-95.18, Mono, CA

Built 1987 Load: 32.4 t ADT: 6,950

U.S. HIGHWAY 395

Good

Over: LITTLE WALKER RIVER

09-MNO-395-95.40, Mono, CA

Built 1987 Load: 32.4 t ADT: 6,950

U.S. HIGHWAY 395

Good

Over: MILL CREEK

09-MNO-395-107.11, Mono, CA

Built 1964 Load: 32.4 t ADT: 6,950

U.S. HIGHWAY 395

Good

Over: ROADSIDE DRAINAGE DITCH

09-MNO-395-116.34, Mono, CA

Built 1989 Load: 32.4 t ADT: 7,450

U.S. HIGHWAY 395

Good

Over: LOS ANGELES AQUEDUCT

09-MNO-395-R44.21R, Mono, CA

Built 1995 Load: 32.4 t ADT: 4,200

US HIGHWAY 395 SB

Good

Over: RUSH CREEK CHANNEL

09-MNO-395-46.24, Mono, CA

Built 2002 Load: 32.4 t ADT: 4,200

US HIGHWAY 395 NB

Good

Over: RUSH CREEK CHANNEL

09-MNO-395-46.24, Mono, CA

Built 2002 Load: 32.4 t ADT: 4,550

Showing 21,351-21,400 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.