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 33

Good

Over: AVENAL CREEK

06-KIN-033-0.42, Kings, CA

Built 1972 Load: 32.4 t ADT: 1,800

STATE ROUTE 41

Good

Over: BUSH STREET

06-KIN-041-R40.99, Kings, CA

Built 1998 Load: 32.4 t ADT: 4,550

STATE ROUTE 198

Good

Over: LAKESIDE CANAL

06-KIN-198-24.60, Kings, CA

Built 2012 Load: 32.4 t ADT: 18,000

GRANGEVILLE BLVD

Good

Over: LEMOORE CANAL

0.6 MI W OF 16TH AVE, Kings, CA

Built 1996 Load: 32.4 t ADT: 5,372

22ND AVE

Good

Over: BLAKELY CANAL

AT SR 41, Kings, CA

Built 1991 Load: 32.4 t ADT: 200

DOVER AVE

Good

Over: LAKELAND CANAL

0.5 MI W/O 4TH AVE, Kings, CA

Built 1990 Load: 32.4 t ADT: 400

EXCELSIOR AVE

Good

Over: WEST BRANCH KINGS RIVER

0.35 MI W OF 17TH AVE, Kings, CA

Built 1978 Load: 32.4 t ADT: 2,167

13TH AVE

Good

Over: LAST CHANCE DITCH

0.3 MI N ELDER AVE, Kings, CA

Built 1988 Load: 32.4 t ADT: 1,167

REDDING AVE

Good

Over: LIBERTY FARMS E CANAL

AT 10TH AVE, Kings, CA

Built 1974 Load: 32.4 t ADT: 650

19TH AVE

Good

Over: TULARE LAKE CANAL

0.45 MI S/O MEDFORD AVE, Kings, CA

Built 2005 Load: 32.4 t ADT: 250

NEVADA AVENUE

Good

Over: NEVADA AVENUE

1.3 MI W/O SR 43, Kings, CA

Built 1994 Load: 32.4 t ADT: 45

EXCELSIOR AVE

Good

Over: PEOPLES DITCH

E/O 8TH AVE, Kings, CA

Built 2020 Load: 32.4 t ADT: 700

DOVER AVE

Good

Over: FUTURE CA HIGHSPEED RAIL

EAST OF S 8TH AVE, Kings, CA

Built 2022 Load: 32.4 t ADT: 1,000

IDAHO AVE

Good

Over: FUTURE CA HIGHSPEED RAIL

E OF RTE 43, E OF 8TH AVE, Kings, CA

Built 2022 Load: 32.4 t ADT: 2,000

KENT AVENUE

Good

Over: FUTURE CA HIGHSPEED RAIL

W OF STATE RTE 43, 8 AVE, Kings, CA

Built 2022 Load: 32.4 t ADT: 1,000

KANSAS AVENUE

Good

Over: FUTURE CA HIGHSPEED RAIL

WEST OF STATE ROUTE 43, Kings, CA

Built 2022 Load: 32.4 t ADT: 1,000

JACKSON AVENUE

Good

Over: FUTURE CA HIGHSPEED RAIL

E OF STATE RTE 43, 8 AVE, Kings, CA

Built 2022 Load: 32.4 t ADT: 2,000

STATE ROUTE 29

Good

Over: PUTAH CREEK

01-LAK-029-9.74, Lake, CA

Built 2003 Load: 32.4 t ADT: 10,900

STATE ROUTE 29

Good

Over: KELSEY CREEK

01-LAK-029-R34.97, Lake, CA

Built 1966 Load: 32.4 t ADT: 12,100

STATE ROUTE 29

Good

Over: HILL CREEK

01-LAK-029-R36.56, Lake, CA

Built 1966 Load: 32.4 t ADT: 12,100

STATE ROUTE 29

Good

Over: MANNING CREEK

01-LAK-029-R38.91, Lake, CA

Built 1966 Load: 32.4 t ADT: 12,100

SR 53

Good

Over: CACHE CREEK

01-LAK-053-1.00, Lake, CA

Built 1997 Load: 32.4 t ADT: 8,250

STATE ROUTE 20

Good

Over: BACHELOR CREEK

01-LAK-020-5.84, Lake, CA

Built 2022 Load: 32.4 t ADT: 10,600

STATE ROUTE 175

Good

Over: PUTAH CREEK

01-LAK-175-R24.00, Lake, CA

Built 1994 Load: 32.4 t ADT: 3,150

OLD STATE HIGHWAY

Good

Over: BURNS VALLEY CREEK

1.5 MI NW SR 53 & OLYMP, Lake, CA

Built 1999 Load: 32.4 t ADT: 640

ISLAND DR

Good

Over: CLEARLAKE OAKS CHANNEL

1/4 MI E SR 20, Lake, CA

Built 1985 Load: 32.4 t ADT: 390

HILDERBRAND DR

Good

Over: SAINT HELENA CREEK

0.1 MI E OF SR 29, Lake, CA

Built 2014 Load: 32.4 t ADT: 50

MATHEWS ROAD

Good

Over: MANNING CREEK

0.1 MI S OF SR 175, Lake, CA

Built 2017 Load: 32.4 t ADT: 310

FOARD RD

Good

Over: ANDERSON CREEK

0.1 MI S ANDERSON SPNG RD, Lake, CA

Built 2017 Load: 32.4 t ADT: 30

HIGHLAND SPRING RD

Good

Over: HIGHLAND CREEK

4.4 MI SW/O BELL HILL RD, Lake, CA

Built 2015 Load: 32.4 t ADT: 52

ACKLEY RD

Good

Over: MANNING CREEK

0.1 MI N/O MATHEWS RD, Lake, CA

Built 2015 Load: 32.4 t ADT: 250

SODA BAY RD

Good

Over: COLE CREEK

6.0 MI E/O S.R. 29, Lake, CA

Built 2015 Load: 32.4 t ADT: 2,060

DRY CREEK RD

Good

Over: DRY CREEK

2 MI W OF SR 29, Lake, CA

Built 2017 Load: 32.4 t ADT: 20

HARBIN SPRINGS RD

Good

Over: HARBIN CREEK

2.5 MI NW OF BIG CYN RD, Lake, CA

Built 2018 Load: 32.4 t ADT: 690

MOCKINGBIRD LANE

Good

Over: ROBINSON CREEK

0.3 MI NW OF ROUTE 29, Lake, CA

Built 2018 Load: 32.4 t ADT: 46

PARNUM ROAD (US20

Good

Over: North Fork Cache Creek

4.7 MILES NW OF CLEARLAKE, Lake, CA

Built 2021 Load: 32.4 t ADT: 1

U.S. HIGHWAY 395

Good

Over: LONG VALLEY CREEK

02-LAS-395-26.19, Lassen, CA

Built 1946 Load: 32.4 t ADT: 5,500

STATE ROUTE 36

Good

Over: JENSEN SLOUGH

02-LAS-036-R26.36, Lassen, CA

Built 1964 Load: 32.4 t ADT: 15,300

STATE ROUTE 36

Good

Over: GOLD RUN CREEK

02-LAS-036-R27.36, Lassen, CA

Built 1964 Load: 32.4 t ADT: 10,300

STATE ROUTE 36

Good

Over: GOODRICH CREEK

02-LAS-036-7.30, Lassen, CA

Built 2021 Load: 32.4 t ADT: 2,300

MCCOY RD

Good

Over: SUSAN RIVER

1.6 MI S OF SR 44, Lassen, CA

Built 1989 Load: 32.4 t ADT: 100

COUNTY RD 311

Good

Over: DEEP CUT (BAXTER) CREEK

1.75 MI E OF CR A 3, Lassen, CA

Built 1988 Load: 32.4 t ADT: 150

CR 518 (SPALDING)

Good

Over: PINE CREEK

1.5 MI S EAGLE LAKE RD, Lassen, CA

Built 1976 Load: 32.4 t ADT: 1,800

ARMSTRONG ROAD

Good

Over: WILLOW CREEK

0.25 MI. S. OF SUSANV. RD, Lassen, CA

Built 1995 Load: 32.4 t ADT: 50

SKYLINE ROAD

Good

Over: SUSAN RIVER

0.15 MILE NE OF US 395, Lassen, CA

Built 2019 Load: 32.4 t ADT: 2,000

HACKSTAFF ROAD

Good

Over: LONG VALLEY CREEK

0.6 MI NE OF CR 361, Lassen, CA

Built 2021 Load: 32.4 t ADT: 80

U.S. HIGHWAY 101

Good

Over: LAS VIRGENES CREEK

07-LA-101-31.37, Los Angeles, CA

Built 1973 Load: 32.4 t ADT: 167,000

STATE ROUTE 1

Good

Over: SOLSTICE CANYON CREEK

07-LA-001-50.36, Los Angeles, CA

Built 1947 Load: 32.4 t ADT: 29,750

U.S. HIGHWAY 101

Good

Over: DRY CANYON CREEK

07-LA-101-27.14-LA, Los Angeles, CA

Built 1957 Load: 32.4 t ADT: 208,000

STATE ROUTE 138

Good

Over: LITTLE ROCK CREEK

07-LA-138-53.55, Los Angeles, CA

Built 1995 Load: 32.4 t ADT: 8,600

Showing 20,701-20,750 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.