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
18058: MERCED RIVE
FairOver: Merced River
8 mi N of Mariposa CA, Mariposa, CA
Built 1927 Load: 13.6 t ADT: 100
COAST ROAD
FairOver: S FORK LITTLE SUR RIVER
5.8 MI SE OF SH 1, Monterey, CA
Built 1950 Load: 13.6 t ADT: 200
PRKFLD COALINGA RD
FairOver: LITTLE CHOLAME CREEK
4 MI N VINEYARD CANYON RD, Monterey, CA
Built 1971 Load: 13.6 t ADT: 240
ADOBE RD
FairOver: ANDERSON CREEK
3.4 MI SE BALLS FERRY RD, Shasta, CA
Built 1968 Load: 13.6 t ADT: 10
PARADISE ROAD
FairOver: M.I.D. LATERAL #5
0.9 MI NW SHILOH RD, Stanislaus, CA
Built 1925 Load: 13.6 t ADT: 939
AVE 428
FairOver: FRIANT-KERN CANAL
0.4 MI EAST OF ROAD 144, Tulare, CA
Built 1949 Load: 13.6 t ADT: 25
AVE 232 (TULARE)
FairOver: FRIANT-KERN CANAL
0.25 MI EAST OF ROAD 228, Tulare, CA
Built 1949 Load: 13.6 t ADT: 200
N FULTON AVE
FairOver: DRY CREEK CANAL
AT DUDLEY AVE, Fresno, CA
Built 1911 Load: 13.9 t ADT: 7,818
PORTER AVE
FairOver: WAHTOKE CREEK
1.8 MILES NORTH OF SR 180, Fresno, CA
Built 1949 Load: 13.9 t ADT: 200
ROAD 67
FairOver: BUTTE CREEK
2.0 MI EAST OF CR Z, Glenn, CA
Built 1930 Load: 13.9 t ADT: 93
STATE ROUTE 138
FairOver: CALIFORNIA AQUEDUCT
07-LA-138-14.60, Los Angeles, CA
Built 1968 Load: 13.9 t ADT: 3,050
RICH BAR RD
FairOver: E BR N FK FEATHER RIVER
0.3 MI S OF SH 70, Plumas, CA
Built 1932 Load: 13.9 t ADT: 10
BOX CANYON RD
FairOver: COACHELLA CANAL
0.5 MI NE/O GARFIELD ST, Riverside, CA
Built 1947 Load: 13.9 t ADT: 721
MILTON ROAD
FairOver: CHANNEL A BRANCH
0.6 MI W OF FINE RD, San Joaquin, CA
Built 1927 Load: 13.9 t ADT: 301
KOSTER RD
FairOver: HOSPITAL CREEK
0.9 MI N GAFFERY RD, San Joaquin, CA
Built 1947 Load: 13.9 t ADT: 400
MONTECITO ST
FairOver: MISSION CREEK
0.05 MI W CHAPALA ST, Santa Barbara, CA
Built 1915 Load: 13.9 t ADT: 3,200
JIM CROW ROAD
FairOver: SAN JUAN CREEK
0.8 MI FROM S.H 49, Sierra, CA
Built 1960 Load: 13.9 t ADT: 50
RICE ROAD
FairOver: M.I.D. MAIN CANAL
0.9 MI E OF CLAUS ROAD, Stanislaus, CA
Built 1955 Load: 13.9 t ADT: 421
PACIFIC HEIGHTS RD
FairOver: DREDGER GULCH
1.0 MI N WELSH RD, Butte, CA
Built 1922 Load: 14.3 t ADT: 230
U.S. HIGHWAY 101
FairOver: SMITH RIV, SOUTH BANK RD
01-DN-101-36.06, Del Norte, CA
Built 1940 Load: 14.3 t ADT: 6,500
S TIBURCIO AVE
FairOver: GRANT CANAL
0.18 MI S/O MT WHITNEY AV, Fresno, CA
Built 1937 Load: 14.3 t ADT: 210
PINE FLAT DAM
FairOver: KINGS RIVER D/S OF DAM
27 MI EAST OF FRESNO, Fresno, CA
Built 1956 Load: 14.3 t ADT: 175
U.S. HIGHWAY 101
FairOver: JONES SLOUGH
01-HUM-101-88.87, Humboldt, CA
Built 1959 Load: 14.3 t ADT: 12,900
BRICELAND-THORNE
FairOver: REDWOOD CREEK
3.3 MI W JCT US 101, Humboldt, CA
Built 1938 Load: 14.3 t ADT: 1,836
ALDERPOINT ROAD
FairOver: COOPER CREEK
30.4 MI E/N S.H. 101, Humboldt, CA
Built 1952 Load: 14.3 t ADT: 250
INTERSTATE 405
FairOver: UP RR, AMTRAK, METROLINK
07-LA-405-43.42-LA, Los Angeles, CA
Built 1963 Load: 14.3 t ADT: 216,000
WINDING ROAD
FairOver: NORTH FORK SAND CREEK
06S42-28.2, Madera, CA
Built 1947 Load: 14.3 t ADT: 50
IRR BRANSCOMB RD
FairOver: TENMILE CREEK
25.41 MI E OF SH 1, Mendocino, CA
Built 1952 Load: 14.3 t ADT: 2,216
DICKENSON FERRY RD
FairOver: SOUTH SLOUGH
0.3 MI E QUINLEY AVENUE, Merced, CA
Built 1927 Load: 14.3 t ADT: 339
RANGE RD
FairOver: MISSION CREEK
SW MIS SA DE PADUA S6B, Monterey, CA
Built 1950 Load: 14.3 t ADT: 1
TWIN CITIES ROAD
FairOver: SNODGRASS SLOUGH
2.0 MI EAST OF RIVER RD, Sacramento, CA
Built 1931 Load: 14.3 t ADT: 4,293
PANOCHE ROAD
FairOver: TRES PINOS CREEK
12 MI W LITTLE PANOCHE RD, San Benito, CA
Built 1960 Load: 14.3 t ADT: 800
NAT TRAILS HWY
FairOver: AVON WASH
9.5 MI E OF CRUCERO RD, San Bernardino, CA
Built 1930 Load: 14.3 t ADT: 235
PORTOLA RD
FairOver: ALEMBIQUE CREEK
0.25 MI E OF SH 84, San Mateo, CA
Built 1914 Load: 14.3 t ADT: 2,969
PLATINA RD
FairOver: HULING CREEK
P.M. 25.1 E FROM SR 36, Shasta, CA
Built 1924 Load: 14.3 t ADT: 610
WOHLER RD
FairOver: RUSSIAN RIVER
1.5 MI FROM RIVER RD, Sonoma, CA
Built 1921 Load: 14.3 t ADT: 828
KIRKWOOD ROAD
FairOver: JEWETT CREEK
0.3 MI S OF FIG LANE, Tehama, CA
Built 1925 Load: 14.3 t ADT: 1,544
NO DATA ENTERED
FairOver: SOUTH ANTELOPE CREEK
NO DATA ENTERED, Tehama, CA
Built 1935 Load: 14.3 t ADT: 20
STATE ROUTE 245
FairOver: WUTCHUMNA DITCH
06-TUL-245-6.39-WLK, Tulare, CA
Built 1939 Load: 14.3 t ADT: 6,800
AVE 220 (WADDELL)
FairOver: FRIANT-KERN CANAL
0.25 MI EAST OF ROAD 228, Tulare, CA
Built 1949 Load: 14.3 t ADT: 200
AVE 212 (MIRADOR)
FairOver: FRIANT-KERN CANAL
0.25 MI EAST OF ROAD 228, Tulare, CA
Built 1949 Load: 14.3 t ADT: 350
AVE 188 (OLIVE)
FairOver: FRIANT-KERN CANAL
0.1 MI WEST OF ROAD 232, Tulare, CA
Built 1949 Load: 14.3 t ADT: 350
ROAD 184
FairOver: FRIANT-KERN CANAL
0.1 MI SOUTH OF AVENUE 40, Tulare, CA
Built 1949 Load: 14.3 t ADT: 225
SYCAMORE RD
FairOver: BOULDER CREEK
1.61 MI E OF STE RTE 126, Ventura, CA
Built 1932 Load: 14.3 t ADT: 600
OREGON GULCH RD
FairOver: OREGON GULCH
2.8 MI S OF CHEROKEE RD, Butte, CA
Built 1920 Load: 14.6 t ADT: 128
PARK AVE
FairOver: LITTLE CHICO CREEK
0.1 MI N OF 11TH ST, Butte, CA
Built 1912 Load: 14.6 t ADT: 18,400
RAILROAD AVE
FairOver: CONTRA COSTA CANAL
0.7 MI S SH 4, Contra Costa, CA
Built 1938 Load: 14.6 t ADT: 20,300
ROAD 67
FairOver: BUTTE CREEK
2.7 MI E RD Z, Glenn, CA
Built 1940 Load: 14.6 t ADT: 93
ELK RIVER ROAD
FairOver: NORTH FORK ELK RIVER
NE PEPPER ST, Humboldt, CA
Built 1923 Load: 14.6 t ADT: 156
PRICE CREEK ROAD
FairOver: PRICE CREEK
0.2 MI W/O BLUE SLIDE RD, Humboldt, CA
Built 1940 Load: 14.6 t ADT: 118
Showing 8,001-8,050 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.