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
ROAD 33N49
FairOver: HAT CREEK
1 1/2 MI. N. OLD STA., Shasta, CA
Built 1972 Load: 33.7 t ADT: 20
CROW CITY ROAD
FairOver: NORTH FORK YUBA RIVER
JUST SOUTH OF ROUTE 49, Sierra, CA
Built 1963 Load: 33.7 t ADT: 50
ST HELENA ROAD
FairOver: MARK WEST CREEK
1.1 MI E CALISTOGA RD, Sonoma, CA
Built 1976 Load: 33.7 t ADT: 2,100
WALLACE CREEK RD
FairOver: WALLACE CREEK
0.5 MI W MILL CREEK RD, Sonoma, CA
Built 1974 Load: 33.7 t ADT: 130
EAGLE CRK LOOP RD
FairOver: EAGLE CREEK
NEAR RAMSHORN ROAD, Trinity, CA
Built 1975 Load: 33.7 t ADT: 50
US HIGHWAY 101 SB
FairOver: UP RR SPUR
07-VEN-101-R23.98-VEN, Ventura, CA
Built 1968 Load: 33.7 t ADT: 68,500
US HIGHWAY 101 NB
FairOver: UP RR SPUR
07-VEN-101-R23.99-VEN, Ventura, CA
Built 1968 Load: 33.7 t ADT: 68,500
CR #25
FairOver: WINTERS CANAL
0.24 MI E/O CR #87, Yolo, CA
Built 1955 Load: 33.7 t ADT: 176
OLD DOBBINS ROAD
FairOver: DOBBINS CREEK
AT TEXAS HILL RD, Yuba, CA
Built 1921 Load: 33.7 t ADT: 530
INTERSTATE 580
FairOver: FOOTHILL BLVD
04-ALA-580-R35.10-OAK, Alameda, CA
Built 1964 Load: 34.0 t ADT: 140,000
HOPYARD ROAD NB
FairOver: ARROYO MOCHO
1.5 MI SOUTH OF SR 580, Alameda, CA
Built 1982 Load: 34.0 t ADT: 37,800
LEESVILLE ROAD
FairOver: FRESHWATER CREEK
1.5 MI NW/O SR 20, Colusa, CA
Built 2000 Load: 34.0 t ADT: 20
U.S. HIGHWAY 101
FairOver: HIGH PRAIRIE CREEK
01-DN-101-9.39, Del Norte, CA
Built 1957 Load: 34.0 t ADT: 4,600
U.S. HIGHWAY 50
FairOver: CARSON ROAD
03-ED-050-R25.95, El Dorado, CA
Built 1964 Load: 34.0 t ADT: 20,300
N TEMPERANCE AVE
FairOver: FANCHER CREEK CANAL
0.3 MI SOUTH OF BELMONT, Fresno, CA
Built 1925 Load: 34.0 t ADT: 7,100
N MCCALL AVE
FairOver: FRESNO CANAL
0.2 MI SOUTH OF MCKINLEY, Fresno, CA
Built 1953 Load: 34.0 t ADT: 5,040
E AMERICAN AVE
FairOver: TRAVERS CREEK
0.1 MI W OF CRAWFORD AVE, Fresno, CA
Built 1950 Load: 34.0 t ADT: 1,300
MERRILL AVE
FairOver: COLONY MAIN CANAL
AT FAIRFAX AVE, Fresno, CA
Built 1960 Load: 34.0 t ADT: 475
E SOUTH AVE
FairOver: CALIFORNIA VINYARD DITCH
0.2 MI E OF CRAWFORD AVE, Fresno, CA
Built 1925 Load: 34.0 t ADT: 1,300
LOS GATOS ROAD
FairOver: LOS GATOS CREEK
5.96 MI W OF DERRICK BL, Fresno, CA
Built 1948 Load: 34.0 t ADT: 200
STATE ROUTE 162
FairOver: WILLOW CREEK
03-GLE-162-67.74, Glenn, CA
Built 1960 Load: 34.0 t ADT: 3,050
ROCKWOOD RD
FairOver: GREESON WASH
0.46 MI N/O SR-98, Imperial, CA
Built 1940 Load: 34.0 t ADT: 100
ELK MOUNTAIN ROAD
FairOver: MIDDLE CREEK
5.08 MI N OF SR 20, Lake, CA
Built 1959 Load: 34.0 t ADT: 175
INTERSTATE 605
FairOver: WADDELL STREET
07-LA-605-R11.80-SFSP, Los Angeles, CA
Built 1965 Load: 34.0 t ADT: 264,000
PACIFIC AVE
FairOver: BIG DALTON WASH
0.3MI W/O PUENTE AVE, Los Angeles, CA
Built 1959 Load: 34.0 t ADT: 23,219
BARREL SPRINGS RD
FairOver: CALIFORNIA AQUEDUCT
0.5MI E/O SR-138 HWY, Los Angeles, CA
Built 1968 Load: 34.0 t ADT: 1,616
CLOVERLEAF DR
FairOver: WALNUT CRK WASH
0.8MI N/O VALLEY BLVD, Los Angeles, CA
Built 1985 Load: 34.0 t ADT: 303
BAILEYFLATS RD 800
FairOver: CHOWCHILLA RIVER
5.4 MI N GREEN MTN RD, Madera, CA
Built 1984 Load: 34.0 t ADT: 51
VLY-FRD-FRKLN SCH
FairOver: ESTERO AMERICANO
0.85 MI S OF S.R. 1, Marin, CA
Built 1961 Load: 34.0 t ADT: 100
US HIGHWAY 101 SB
FairOver: POMO LANE
01-MEN-101-28.58, Mendocino, CA
Built 1962 Load: 34.0 t ADT: 12,300
US HIGHWAY 101 NB
FairOver: POMO LANE
01-MEN-101-28.58, Mendocino, CA
Built 1962 Load: 34.0 t ADT: 12,300
OLD SHERWOOD RD
FairOver: LONG VALLEY CREEK
ADJ TO US 101, Mendocino, CA
Built 1989 Load: 34.0 t ADT: 81
BELLEVUE RD
FairOver: FARAHNS CREEK
0.7 MI W G ST, Merced, CA
Built 1966 Load: 34.0 t ADT: 1,270
KEYES ROAD
FairOver: DRY CREEK
1.0 MI W COX FERRY ROAD, Merced, CA
Built 1964 Load: 34.0 t ADT: 354
OLD HIGHWAY DR
FairOver: SUMMIT CREEK
NEAR DONNER LAKE, Nevada, CA
Built 1970 Load: 34.0 t ADT: 500
INTERSTATE 80 EB
FairOver: HAMPSHIRE ROCKS ROAD
03-PLA-080-R66.33, Placer, CA
Built 1964 Load: 34.0 t ADT: 13,500
VERNON ST (RSVL)
FairOver: DRY CREEK
0.3 MI N CIRBY WY, Placer, CA
Built 1973 Load: 34.0 t ADT: 9,303
INTERSTATE 15 SB
FairOver: MOUND WASH
08-SBD-015-R101.27, San Bernardino, CA
Built 1963 Load: 34.0 t ADT: 28,000
INTERSTATE 15 NB
FairOver: MOUND WASH
08-SBD-015-R101.27, San Bernardino, CA
Built 1963 Load: 34.0 t ADT: 28,000
INTERSTATE 40 EB
FairOver: BRISTOL MOUNTAIN WASH
08-SBD-040-R58.98R, San Bernardino, CA
Built 1970 Load: 34.0 t ADT: 8,150
ILLINOIS STREET
FairOver: ISLAIS CREEK
0.2 MI NORTH OF CARGO WAY, San Francisco, CA
Built 2008 Load: 34.0 t ADT: 2,000
WB 4 ON-RAMP
FairOver: MORMON SLOUGH
10-SJ-004-R16.20-STKN, San Joaquin, CA
Built 1972 Load: 34.0 t ADT: 700
JACK TONE ROAD
FairOver: LONE TREE CREEK
0.7 MI N LONE TREE RD, San Joaquin, CA
Built 1962 Load: 34.0 t ADT: 3,015
LINCOLN ST
FairOver: MORMON SLOUGH
0.1 MI N CHURCH ST, San Joaquin, CA
Built 1972 Load: 34.0 t ADT: 5,400
JACK TONE ROAD
FairOver: TEMPLE CREEK
1.9 MI N. LONE TREE RD, San Joaquin, CA
Built 1962 Load: 34.0 t ADT: 1,761
LINCOLN WAY
FairOver: DRY CREEK
LWER SAC RD SAC/SJ CO LN, San Joaquin, CA
Built 1958 Load: 34.0 t ADT: 6,877
MARSH STREET
FairOver: SAN LUIS OBISPO CREEK
13.9 MI N JCT W/RTE 101, San Luis Obispo, CA
Built 1948 Load: 34.0 t ADT: 12,273
OLD SANTA CRUZ HY
FairOver: OLD SANTA CRUZ HWY VIADU
0.1 MI N OGALLA WARPATH, Santa Clara, CA
Built 1983 Load: 34.0 t ADT: 1,950
FOSTER ROAD
FairOver: NORTH FORK COTTONWOOD CR
0.3 MI E GAS POINT RD, Shasta, CA
Built 1966 Load: 34.0 t ADT: 100
WHITMORE RD
FairOver: OLD COW CREEK
0.4 MI E OF W END FERN RD, Shasta, CA
Built 1954 Load: 34.0 t ADT: 750
Showing 15,001-15,050 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.