Total Bridges
27,040
Public highway bridges in California
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
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)
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
34
New Jersey
4.59% top marginal rate
06
California
4.60% top marginal rate
05
Arkansas
4.71% top marginal rate
53
Washington
4.81% top marginal rate
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
PoorOver: FALL RIVER
0.5 MI N OF MCARTHUR RD, Shasta, CA
Built 1950 Load: 2.7 t ADT: 50
ORESTIMBA ROAD
PoorOver: CCID MAIN CANAL
0.1 MI E DRAPER RD, Stanislaus, CA
Built 1919 Load: 2.9 t ADT: 684
CLARK STREET
PoorOver: 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 DeficientOver: MIDDLE FORK FEATHER RIV
0.2 MI S SH 70, Plumas, CA
Built 1954 Load: 3.2 t ADT: 10,046
AVENUE 10
PoorOver: COTTONWOOD CREEK
JUST E/O ROAD 23, Madera, CA
Built 1950 Load: 3.6 t ADT: 50
S BISHOP AVE
PoorOver: CRESCENT DITCH
0.64 MI S/O MT WHITNEY AV, Fresno, CA
Built 1950 Load: 3.9 t ADT: 125
All Bridges in California
PIKE CITY RD
FairOver: OREGON CREEK
1 MI E COMPTONVILLE, Yuba, CA
Built 1958 Load: 8.7 t ADT: 10
DUNSTONE ROAD
FairOver: NORTH FORK HONCUT CREEK
JUST N OF AVACADO ROAD, Butte, CA
Built 1930 Load: 9.1 t ADT: 132
18024: ROCKY BAR
FairOver: COSUMNES RIVER
3.2 mi S Grizzly Flat Rd, El Dorado, CA
Built 1938 Load: 9.1 t ADT: 25
HORSE CREEK CAMP R
FairOver: OLEMA CREEK
3.2 miles south of Olema,, Marin, CA
Built 1960 Load: 9.1 t ADT: 20
NAT TRAILS HWY
FairOver: FLORWOOD DITCH
23.3 MI E OF CRUCERO RD, San Bernardino, CA
Built 1930 Load: 9.1 t ADT: 230
ALAMITOS ROAD
FairOver: HERBERT CREEK
0.9 MI SW OF JCT HICKS RD, Santa Clara, CA
Built 1956 Load: 9.1 t ADT: 10
ALMADEN WAY
FairOver: ALAMITOS CREEK
@ BERTRAN RD & ALMADEN EX, Santa Clara, CA
Built 1919 Load: 9.1 t ADT: 290
NO DATA ENTERED
FairOver: HALLS GULCH CREEK
NO DATA ENTERED, Tuolumne, CA
Built 1935 Load: 9.1 t ADT: 50
HAPPY VALLEY RD
FairOver: CAMP CREEK
0.5 MI SE/O MT AUKUM RD, El Dorado, CA
Built 1930 Load: 9.4 t ADT: 250
WINDING ROAD
FairOver: AMERICAN RIVER
NO DATA ENTERED, El Dorado, CA
Built 1956 Load: 9.4 t ADT: 50
E VALLEY ST
FairOver: BROADDUS CREEK
0.1 MI EAST OF US 101, Mendocino, CA
Built 1993 Load: 9.4 t ADT: 1,000
HULL VALLEY RD
FairOver: HULLS CREEK
5.3 MI NE JCT MINA RD, Mendocino, CA
Built 1994 Load: 9.4 t ADT: 11
NAT TRAILS HWY
FairOver: ILIAD DITCH
23.2 MI E KELBAKER RD, San Bernardino, CA
Built 1930 Load: 9.4 t ADT: 502
NAT TRAILS HWY
FairOver: ELRITA DITCH
24.6 MI E KELBAKER RD, San Bernardino, CA
Built 1930 Load: 9.4 t ADT: 502
MONTE RD
FairOver: SQUIRE CREEK
0.25 MI S/O SAN LUIS B DR, San Luis Obispo, CA
Built 1958 Load: 9.4 t ADT: 200
S CLOVIS AVE
FairOver: LIBERTY DITCH
1.0 MI SOUTH OF DAVIS AVE, Fresno, CA
Built 1942 Load: 9.7 t ADT: 300
SOETH RD (RD 410)
FairOver: STONY CREEK
0.2 MI E OF RD 306, Glenn, CA
Built 1900 Load: 9.7 t ADT: 11
COUNTY RD 50
FairOver: CAMPBELL SLOUGH
1/4 MI W CO RD Z, Glenn, CA
Built 1930 Load: 9.7 t ADT: 72
NAT TRAILS HWY
FairOver: ENCANTO DITCH
23.8 MI E CRUCERO RD, San Bernardino, CA
Built 1930 Load: 9.7 t ADT: 230
NAT TRAILS HWY
FairOver: DIAZ DITCH
24.1 MI E CRUCERO RD, San Bernardino, CA
Built 1930 Load: 9.7 t ADT: 230
NAT TRAILS HWY
FairOver: BASALT DITCH
25.2 MI E OF CRUCERO RD, San Bernardino, CA
Built 1930 Load: 9.7 t ADT: 230
NAT TRAILS HWY
FairOver: CRATER DITCH
26.3 MI E CRUCERO RD, San Bernardino, CA
Built 1930 Load: 9.7 t ADT: 230
NAT TRAILS HWY
FairOver: ALSA DITCH
3.7 MI E KELBAKER RD, San Bernardino, CA
Built 1930 Load: 9.7 t ADT: 502
NAT TRAILS HWY
FairOver: ADELIA DITCH
11.1 MI E KELBAKER RD, San Bernardino, CA
Built 1930 Load: 9.7 t ADT: 502
CARROLTON RD
FairOver: LONE TREE CREEK
0.5 MI S OF LONE TREE RD, San Joaquin, CA
Built 1928 Load: 9.7 t ADT: 304
WILDCAT CREEK ROAD
FairOver: SCOTT RIVER
0.1 MI E OF SR 3, Siskiyou, CA
Built 1909 Load: 9.7 t ADT: 20
SHASTA BLVD
FairOver: NORTH FORK MILL CREEK
0.3 MI S WILSON STREET, Tehama, CA
Built 1939 Load: 9.7 t ADT: 150
YORK RD
FairOver: RESERVATION MAIN DRAIN
0.2 MI N/O MEHRING RD, Imperial, CA
Built 1950 Load: 10.0 t ADT: 10
NAT TRAILS HWY
FairOver: SCOTTY DITCH
10.7 MI E KELBAKER RD, San Bernardino, CA
Built 1930 Load: 10.0 t ADT: 502
NAT TRAILS HWY
FairOver: BELLOTA DITCH
11.9 MI E KELBAKER RD, San Bernardino, CA
Built 1930 Load: 10.0 t ADT: 502
OLD CAZADERO RD
FairOver: AUSTIN CREEK
AT CAZADERO HWY, Sonoma, CA
Built 1940 Load: 10.0 t ADT: 60
STATE ROUTE 168
FairOver: TAMARACK CREEK
06-FRE-168-58.67, Fresno, CA
Built 1955 Load: 10.4 t ADT: 1,300
WOOLLOMES AVE
FairOver: FRIANT-KERN CANAL
0.3 MI EAST OF ZACHARY AV, Kern, CA
Built 1949 Load: 10.4 t ADT: 470
INTERSTATE 110
FairOver: DOMINGUEZ CHANNEL
07-LA-110-9.13-LA, Los Angeles, CA
Built 1960 Load: 10.4 t ADT: 273,760
MILL CROSSING
FairOver: LAGUNITAS CREEK
SAMUEL P TAYLOR STATE PK, Marin, CA
Built 1947 Load: 10.4 t ADT: 1
COAST ROAD
FairOver: N FORK LITTLE SUR RIVER
5.7 MI SE OF SH 1, Monterey, CA
Built 1950 Load: 10.4 t ADT: 200
ESQUILINE RD
FairOver: HITCHCOCK CANYON CREEK
0.1 MI N OSITOS, Monterey, CA
Built 1950 Load: 10.4 t ADT: 2,700
NAT TRAILS HWY
FairOver: BARODA DITCH
24.8 MI E OF CRUCERO RD, San Bernardino, CA
Built 1930 Load: 10.4 t ADT: 239
NAT TRAILS HWY
FairOver: TERZILLA DITCH
10.2 MI E KELBAKER RD, San Bernardino, CA
Built 1930 Load: 10.4 t ADT: 502
ROAD 192
FairOver: FRIANT-KERN CANAL
1.0 MI SOUTH OF AVE 80, Tulare, CA
Built 1949 Load: 10.4 t ADT: 510
AVENUE 268
FairOver: FRIANT-KERN CANAL
0.8 MI EAST OF ROAD 204, Tulare, CA
Built 1949 Load: 10.4 t ADT: 300
AVE 174 (LINDA)
FairOver: FRIANT-KERN CANAL
0.3 MI WEST OF ROAD 232, Tulare, CA
Built 1949 Load: 10.4 t ADT: 750
CASE AVENUE
FairOver: MISSION CREEK
1600 FT W OF SUNOL BLVD, Alameda, CA
Built 2004 Load: 10.7 t ADT: 3,545
WINDING ROAD
FairOver: WEST KAISER CREEK
07S05-15.4, Fresno, CA
Built 1961 Load: 10.7 t ADT: 50
RD 318
FairOver: SUSAN RIVER
1.7 MI E/O RD 305, Lassen, CA
Built 1975 Load: 10.7 t ADT: 100
DOGTOWN ROAD
FairOver: MAXWELL CREEK
1.6 MI E GREELY HILL R, Mariposa, CA
Built 1958 Load: 10.7 t ADT: 120
DOVER CANYON RD
FairOver: JACK CREEK
1.3 MI SW OF VINEYARD DR, San Luis Obispo, CA
Built 1920 Load: 10.7 t ADT: 151
PLUM CREEK ROAD
FairOver: PAYNES CREEK
200'S PAYNES CREEK LOOP, Tehama, CA
Built 1933 Load: 10.7 t ADT: 350
CENTER ACCESS ROAD
FairOver: MUD SLOUGH
REFUGE ACCESS RD/PRK.LOT3, Merced, CA
Built 1990 Load: 10.9 t ADT: 10
ACCESS ROAD
FairOver: COYOTE CREEK
2 MI E OF PROBERTA, Tehama, CA
Built 1970 Load: 10.9 t ADT: 10
Showing 7,851-7,900 of 27,040 bridges
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.