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

MERIDIAN RD

Good

Over: CAMPBELL CREEK

SOUTH OF LASSEN RD, Tehama, CA

Built 1938 Load: 16.2 t ADT: 100

STATE ROUTE 137

Good

Over: WILLOW CANAL

06-TUL-137-17.49-TUL, Tulare, CA

Built 1921 Load: 16.2 t ADT: 21,000

AV 376 \ PIEDRA AV

Good

Over: FRIANT-KERN CANAL

0.6 MI WEST OF SR 201, Tulare, CA

Built 1949 Load: 16.2 t ADT: 125

SD 243/DRY CRK DR

Good

Over: BEAR CREEK

8.66 MI N OF SR 216, Tulare, CA

Built 1938 Load: 16.2 t ADT: 200

ROAD 148

Good

Over: DEEP CREEK

0.1 MI S OF AVE 264, Tulare, CA

Built 1946 Load: 16.2 t ADT: 75

STATE ROUTE 150

Good

Over: LION CANYON CREEK

07-VEN-150-21.70, Ventura, CA

Built 1921 Load: 16.2 t ADT: 2,500

LOS ANGELES AVE

Good

Over: TAPO CANYON CREEK

0.2 MI E SYCAMORE DR, Ventura, CA

Built 1911 Load: 16.2 t ADT: 24,000

REINO ROAD

Good

Over: BORCHARD DRAIN

0.5 MI N BORCHARD RD, Ventura, CA

Built 1930 Load: 16.2 t ADT: 12,225

COUNTY ROAD 99W

Good

Over: QUAKER DRAW

0.33 MI NW OF CR 95, Yolo, CA

Built 1916 Load: 16.2 t ADT: 1,000

COUNTY ROAD 99W

Good

Over: ZAMORA DITCH

0.35 MI NW OF CR #12, Yolo, CA

Built 1920 Load: 16.2 t ADT: 1,724

COUNTY ROAD 98

Good

Over: SLOUGH S7

0.09 MI SOUTH OF CR #13, Yolo, CA

Built 1940 Load: 16.2 t ADT: 204

COUNTY ROAD 19

Good

Over: SLOUGH S6

0.27 MI EAST OF I-505, Yolo, CA

Built 1930 Load: 16.2 t ADT: 650

RANCHO RD

Good

Over: HUTCHINSON CREEK

.3 MI NW/O OSTROM RD, Yuba, CA

Built 1925 Load: 16.2 t ADT: 1,700

E BEHYMER AVE

Good

Over: ENTERPRISE CANAL

0.3 MI EAST OF MINNEWAWA, Fresno, CA

Built 1925 Load: 16.5 t ADT: 3,000

BUTLER VALLEY RD

Good

Over: MAPLE CREEK

0.2 MI W/O MAPLE CRK RD, Humboldt, CA

Built 1929 Load: 16.5 t ADT: 105

LERDO HIGHWAY

Good

Over: FRIANT-KERN CANAL

1.9 MI EAST OF CHERRY AVE, Kern, CA

Built 1951 Load: 16.5 t ADT: 9,000

SHIRLY JEAN ST

Good

Over: VERDUGO WASH

100FT W/O LA CRESENTA AVE, Los Angeles, CA

Built 1953 Load: 16.5 t ADT: 204

AVE 18

Good

Over: DRY CREEK

0.3 MI W OF RD 23, Madera, CA

Built 1948 Load: 16.5 t ADT: 450

NORWOOD AVE

Good

Over: ROSS CREEK

0.1 MI NORTH OF SHADY LN, Marin, CA

Built 1908 Load: 16.5 t ADT: 1,200

CUNNINGHAM ROAD

Good

Over: MARIPOSA CREEK

3.3 MI S CHILDS AVE, Merced, CA

Built 1920 Load: 16.5 t ADT: 441

HEALY ROAD

Good

Over: DUCK SLOUGH

1.2 MI N MCNAMARA RD, Merced, CA

Built 1935 Load: 16.5 t ADT: 719

MISSION AVENUE

Good

Over: LE GRAND CANAL

0.8 MI E BURCHELL AVENUE, Merced, CA

Built 1940 Load: 16.5 t ADT: 70

STATE ROUTE 1

Good

Over: LIME CREEK

05-MON-001-32.25, Monterey, CA

Built 1975 Load: 16.5 t ADT: 2,000

RIO LINDA BLVD

Good

Over: SOUTH CHANNEL DRY CREEK

1.0 MI S ELKHORN BL, Sacramento, CA

Built 1939 Load: 16.5 t ADT: 6,113

TREASURE ISLAND RD

Good

Over: SIDEHILL

JSO SHV#5, San Francisco, CA

Built 1938 Load: 16.5 t ADT: 3,000

TREASURE ISLAND RD

Good

Over: SIDEHILL

JNO SHV#5/ JSO SHV #8, San Francisco, CA

Built 1938 Load: 16.5 t ADT: 3,000

4TH ST

Good

Over: SARATOGA CREEK

NEAR BASIN WAY, Santa Clara, CA

Built 1939 Load: 16.5 t ADT: 1,650

GILROY HOT SPRG RD

Good

Over: HUNTING HOLLOW CREEK

0.7 MI N CANADA RD, Santa Clara, CA

Built 1940 Load: 16.5 t ADT: 120

GAS POINT ROAD

Good

Over: ANTELOPE CREEK

8.6 MI WEST OF I-5, Shasta, CA

Built 1925 Load: 16.5 t ADT: 1,225

CANFIELD RD

Good

Over: BLUCHER CREEK

0.9 MI N OF BLANK RD, Sonoma, CA

Built 1927 Load: 16.5 t ADT: 700

SALIDA BOULEVARD

Good

Over: M.I.D. LATERAL #6

0.4 MI S/O BROADWAY, Stanislaus, CA

Built 1938 Load: 16.5 t ADT: 9,500

ST FRANCIS AVENUE

Good

Over: M.I.D. MAIN CANAL

0.1 MI WEST MCHENRY AVE, Stanislaus, CA

Built 1924 Load: 16.5 t ADT: 532

AVE 176

Good

Over: PORTER SLOUGH

0.12 MI W OF RD 202, Tulare, CA

Built 1945 Load: 16.5 t ADT: 200

AVE 388

Good

Over: SAND CREEK

0.2 MI E OF ROAD 108, Tulare, CA

Built 1939 Load: 16.5 t ADT: 250

AVENUE 408

Good

Over: SAND CREEK

AT ROAD 124, Tulare, CA

Built 1939 Load: 16.5 t ADT: 2,275

ROAD 124

Good

Over: SAND CREEK

0.05 MI N OF AVE 408, Tulare, CA

Built 1939 Load: 16.5 t ADT: 1,450

BRIDGE ROAD

Good

Over: SANTA PAULA CREEK

EAST OF SR 150, Ventura, CA

Built 1941 Load: 16.5 t ADT: 300

TELEGRAPH RD

Good

Over: TODD BARRANCA

2.8 MI E OF WELLS RD, Ventura, CA

Built 1936 Load: 16.5 t ADT: 5,400

SANTA ANA RD

Good

Over: COYOTE CREEK

0.7 MI NW SR 33, Ventura, CA

Built 1955 Load: 16.5 t ADT: 2,100

C.R. #25

Good

Over: SOUTH FORK WILLOW SLOUGH

0.29 E OF C.R.93, Yolo, CA

Built 1930 Load: 16.5 t ADT: 345

COUNTY ROAD #11

Good

Over: BRETONA CREEK

0.50 MI E OF C.R. #91B, Yolo, CA

Built 1940 Load: 16.5 t ADT: 75

CR 86A

Good

Over: SOUTH FORK WILLOW SLOUGH

1/2 MI S OF SR 16, Yolo, CA

Built 1923 Load: 16.5 t ADT: 175

STATE ROUTE 84

Good

Over: ARROYO DE LA LAGUNA

04-ALA-084-17.22, Alameda, CA

Built 1939 Load: 16.8 t ADT: 13,500

E RIO BONITO RD

Good

Over: HAMILTON SLOUGH

0.2 MI E OF SH 99, Butte, CA

Built 1930 Load: 16.8 t ADT: 270

OLD 99W

Good

Over: FRESHWATER CREEK

0.3 MI N FRESHWATER RD, Colusa, CA

Built 1930 Load: 16.8 t ADT: 1,797

SYCAMORE CUTOFF

Good

Over: IRRIGATION DITCH

0.1 MI N/E OF SR 45, Colusa, CA

Built 1930 Load: 16.8 t ADT: 1,085

DEER PARK DR

Good

Over: PINE CREEK

0.1 MI E OAK GROVE RD, Contra Costa, CA

Built 1967 Load: 16.8 t ADT: 1,000

GOLF CLUB ROAD

Good

Over: CONTRA COSTA CANAL

AT PASO NOGAL, Contra Costa, CA

Built 1940 Load: 16.8 t ADT: 5,000

STATE ROUTE 41 NB

Good

Over: CALIF,GOLDEN ST,G,BROAD

06-FRE-041-R22.11-FRE, Fresno, CA

Built 1966 Load: 16.8 t ADT: 38,000

E JEFFERSON AVE

Good

Over: WAHTOKE CREEK

0.31 MI W BUTTONWILLOW AV, Fresno, CA

Built 1925 Load: 16.8 t ADT: 350

Showing 17,451-17,500 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.