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

MATTOLE ROAD

Good

Over: INDIAN CREEK

4.5 MI S/O PETROLIA, Humboldt, CA

Built 2010 Load: 32.4 t ADT: 240

RED CAP ROAD

Good

Over: BIG ROCK GULCH

0.3 MILES SW OF SR96, Humboldt, CA

Built 2019 Load: 32.4 t ADT: 425

PORT KENYON ROAD

Good

Over: FRANCIS CREEK

0.5 MI W OF MAIN STREET, Humboldt, CA

Built 2015 Load: 32.4 t ADT: 500

IRR BIA RTE 15

Good

Over: HOSTLER CREEK

3 KM NORTH OF HOOPA, Humboldt, CA

Built 1962 Load: 32.4 t ADT: 200

STATE ROUTE 86 NB

Good

Over: CENTRAL MAIN CANAL

11-IMP-086-17.86, Imperial, CA

Built 1982 Load: 32.4 t ADT: 7,700

STATE ROUTE 115

Good

Over: ALAMO RIVER

11-IMP-115-L10.31-HOLT, Imperial, CA

Built 1955 Load: 32.4 t ADT: 5,400

STATE ROUTE 86 SB

Good

Over: SAN FELIPE CREEK

11-IMP-086-43.30, Imperial, CA

Built 1987 Load: 32.4 t ADT: 6,150

STATE ROUTE 86 SB

Good

Over: TRIFOLIUM/WESTSIDE MAIN

11-IMP-086-R24.79, Imperial, CA

Built 1997 Load: 32.4 t ADT: 5,700

STATE ROUTE 86 NB

Good

Over: TRIFOLIUM/WESTSIDE MAIN

11-IMP-086-R24.77, Imperial, CA

Built 1962 Load: 32.4 t ADT: 5,700

STATE ROUTE 86 SB

Good

Over: TAMARACK (WESTSIDE MAIN)

11-IMP-086-R22.93, Imperial, CA

Built 1998 Load: 32.4 t ADT: 5,700

STATE ROUTE 86 NB

Good

Over: TAMARACK (WESTSIDE MAIN)

11-IMP-086-R22.96, Imperial, CA

Built 1962 Load: 32.4 t ADT: 5,700

STATE ROUTE 86 NB

Good

Over: LONE TREE WASH

11-IMP-086-R37.23, Imperial, CA

Built 1947 Load: 32.4 t ADT: 7,350

STATE ROUTE 86 NB

Good

Over: ZENAS DITCH

11-IMP-086-55.50, Imperial, CA

Built 1959 Load: 32.4 t ADT: 7,550

STATE ROUTE 86 SB

Good

Over: BILOXI DITCH

11-IMP-086-56.36, Imperial, CA

Built 1989 Load: 32.4 t ADT: 7,300

STATE ROUTE 86 SB

Good

Over: IBERIA DITCH

11-IMP-086-56.60, Imperial, CA

Built 1989 Load: 32.4 t ADT: 7,300

STATE ROUTE 86 SB

Good

Over: BERSA DITCH

11-IMP-086-60.15, Imperial, CA

Built 1989 Load: 32.4 t ADT: 7,300

STATE ROUTE 86 SB

Good

Over: TESLA WASH

11-IMP-086-60.47, Imperial, CA

Built 1989 Load: 32.4 t ADT: 7,300

STATE ROUTE 86 SB

Good

Over: VALERIE WASH

11-IMP-086-60.57, Imperial, CA

Built 1989 Load: 32.4 t ADT: 7,300

STATE ROUTE 86 SB

Good

Over: VIRGO WASH

11-IMP-086-60.90, Imperial, CA

Built 1989 Load: 32.4 t ADT: 7,300

STATE ROUTE 86 SB

Good

Over: ASTER DITCH

11-IMP-086-61.24, Imperial, CA

Built 1990 Load: 32.4 t ADT: 7,300

STATE ROUTE 86 SB

Good

Over: VERBENA DITCH

11-IMP-086-61.37, Imperial, CA

Built 1990 Load: 32.4 t ADT: 7,300

STATE ROUTE 86 SB

Good

Over: IBYCUS DITCH

11-IMP-086-61.55, Imperial, CA

Built 1990 Load: 32.4 t ADT: 7,300

STATE ROUTE 86 SB

Good

Over: TALOFA DITCH

11-IMP-086-61.80, Imperial, CA

Built 1990 Load: 32.4 t ADT: 7,300

STATE ROUTE 86 SB

Good

Over: TONALEE DITCH

11-IMP-086-62.20, Imperial, CA

Built 1990 Load: 32.4 t ADT: 7,300

STATE ROUTE 86 SB

Good

Over: DAROCA DITCH

11-IMP-086-62.31, Imperial, CA

Built 1990 Load: 32.4 t ADT: 7,300

STATE ROUTE 86 SB

Good

Over: BEXAR DITCH

11-IMP-086-62.65, Imperial, CA

Built 1990 Load: 32.4 t ADT: 7,300

STATE ROUTE 86 SB

Good

Over: TORTIF DITCH

11-IMP-086-62.98, Imperial, CA

Built 1990 Load: 32.4 t ADT: 7,300

STATE ROUTE 86 SB

Good

Over: FOLIUS DITCH

11-IMP-086-63.13, Imperial, CA

Built 1990 Load: 32.4 t ADT: 7,100

STATE ROUTE 86 SB

Good

Over: FLORIS DITCH

11-IMP-086-63.21, Imperial, CA

Built 1990 Load: 32.4 t ADT: 7,100

STATE ROUTE 86 SB

Good

Over: ENCILIA DITCH

11-IMP-086-63.49, Imperial, CA

Built 1990 Load: 32.4 t ADT: 7,300

STATE ROUTE 86 SB

Good

Over: FARINOSA DITCH

11-IMP-086-63.79, Imperial, CA

Built 1990 Load: 32.4 t ADT: 7,200

STATE ROUTE 86 SB

Good

Over: CALYX DITCH

11-IMP-086-64.33, Imperial, CA

Built 1990 Load: 32.4 t ADT: 7,200

STATE ROUTE 86 SB

Good

Over: PAROSA DITCH

11-IMP-086-65.00, Imperial, CA

Built 1990 Load: 32.4 t ADT: 7,200

STATE ROUTE 86 SB

Good

Over: ZANTHE DITCH

11-IMP-086-65.22, Imperial, CA

Built 1990 Load: 32.4 t ADT: 7,200

STATE ROUTE 86 SB

Good

Over: SHORELINE DITCH

11-IMP-086-65.68, Imperial, CA

Built 1989 Load: 32.4 t ADT: 7,200

INTERSTATE 8

Good

Over: SAND HILLS DITCH

11-IMP-008-R83.71, Imperial, CA

Built 1970 Load: 32.4 t ADT: 14,500

INTERSTATE 8

Good

Over: OGILBY DITCH

11-IMP-008-R83.99, Imperial, CA

Built 1970 Load: 32.4 t ADT: 15,100

INTERSTATE 8

Good

Over: PACK DITCH

11-IMP-008-R84.40, Imperial, CA

Built 1970 Load: 32.4 t ADT: 15,100

INTERSTATE 8

Good

Over: GUSTO DITCH

11-IMP-008-R84.84, Imperial, CA

Built 1970 Load: 32.4 t ADT: 15,100

INTERSTATE 8

Good

Over: CERTO DITCH

11-IMP-008-R85.16, Imperial, CA

Built 1970 Load: 32.4 t ADT: 15,100

INTERSTATE 8

Good

Over: SHACK DITCH

11-IMP-008-R85.46, Imperial, CA

Built 1970 Load: 32.4 t ADT: 15,100

INTERSTATE 8

Good

Over: JACKSON GULCH

11-IMP-008-R85.80, Imperial, CA

Built 1970 Load: 32.4 t ADT: 15,100

INTERSTATE 8

Good

Over: BOTTLE DITCH

11-IMP-008-R86.16, Imperial, CA

Built 1970 Load: 32.4 t ADT: 15,100

INTERSTATE 8

Good

Over: BERM DITCH

11-IMP-008-R86.66, Imperial, CA

Built 1970 Load: 32.4 t ADT: 15,100

INTERSTATE 8

Good

Over: ACME DITCH

11-IMP-008-R87.11, Imperial, CA

Built 1970 Load: 32.4 t ADT: 15,100

INTERSTATE 8

Good

Over: PLATE DITCH

11-IMP-008-R87.58, Imperial, CA

Built 1970 Load: 32.4 t ADT: 15,100

INTERSTATE 8

Good

Over: TRIANGLE DITCH

11-IMP-008-R88.12, Imperial, CA

Built 1970 Load: 32.4 t ADT: 15,100

INTERSTATE 8

Good

Over: SIDEWINDER WASH

11-IMP-008-R89.60, Imperial, CA

Built 1970 Load: 32.4 t ADT: 15,100

INTERSTATE 8

Good

Over: DERRICK WASH

11-IMP-008-R89.77, Imperial, CA

Built 1970 Load: 32.4 t ADT: 15,100

INTERSTATE 8

Good

Over: KNOB WASH

11-IMP-008-R89.90, Imperial, CA

Built 1970 Load: 32.4 t ADT: 15,100

Showing 20,451-20,500 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.