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
STATE ROUTE 49
FairOver: RANCHERIA CREEK
10-AMA-049-12.14, Amador, CA
Built 1983 Load: 32.7 t ADT: 11,000
LARKIN RD
FairOver: MAIN DRAINAGE CANAL
3.91 MI N/E FROM SH 99, Butte, CA
Built 1938 Load: 32.7 t ADT: 2,308
POOLE STATION RD
FairOver: BEAR CREEK
3.5 MI N OF S.H. 4, Calaveras, CA
Built 1979 Load: 32.7 t ADT: 126
HOGAN DAM RD
FairOver: BEAR CREEK
9.0 MI S/O SR 26, Calaveras, CA
Built 1960 Load: 32.7 t ADT: 85
LONE STAR ROAD
FairOver: GLENN-COLUSA CANAL
100 FT SOUTH OF WARE RD, Colusa, CA
Built 1968 Load: 32.7 t ADT: 2,417
WHITE ROAD
FairOver: CUNNINGHAM SLOUGH
E OF STEVENS ROAD, Contra Costa, CA
Built 1968 Load: 32.7 t ADT: 10
U.S. HIGHWAY 50 EB
FairOver: WEBER CREEK
03-ED-050-15.42, El Dorado, CA
Built 1963 Load: 32.7 t ADT: 20,000
E THOMAS AVENUE
FairOver: DRY CREEK CANAL
AT YOSEMITE AVE, Fresno, CA
Built 1939 Load: 32.7 t ADT: 600
ROAD 53
FairOver: COLUSA DRAIN
0.5 MI E ROAD 'V', Glenn, CA
Built 1945 Load: 32.7 t ADT: 8
US HIGHWAY 101 SB
FairOver: ELK RIVER
01-HUM-101-74.60, Humboldt, CA
Built 1956 Load: 32.7 t ADT: 16,200
STATE ROUTE 96
FairOver: TRINITY RIVER
01-HUM-096-12.26, Humboldt, CA
Built 1957 Load: 32.7 t ADT: 1,505
CANNIBAL ROAD
FairOver: MOSLEY SLOUGH
3.7 MI W OF EEL RIVER DR., Humboldt, CA
Built 1959 Load: 32.7 t ADT: 434
PORT KENYON ROAD
FairOver: SALT RIVER OVERFLOW
0.24 MI W HIGHWAY 211, Humboldt, CA
Built 1962 Load: 32.7 t ADT: 351
DAVISON ROAD
FairOver: PRAIRIE CREEK
Approximately 0.2 miles f, Humboldt, CA
Built 1970 Load: 32.7 t ADT: 50
LERDO HIGHWAY
FairOver: LERDO CANAL
0.6 MI E/O SR 99, Kern, CA
Built 1966 Load: 32.7 t ADT: 4,900
GP ROAD
FairOver: CALIFORNIA AQUEDUCT
1.4 MI W LOST HILLS ROAD, Kern, CA
Built 1966 Load: 32.7 t ADT: 320
ZERKER RD
FairOver: POSO CREEK
0.3 MI N KIMBERLINA RD, Kern, CA
Built 1958 Load: 32.7 t ADT: 1,100
STATE ROUTE 58
FairOver: BNSF RY & AMTRAK
0.2 MI W OF ENGER ST, Kern, CA
Built 1971 Load: 32.7 t ADT: 32,500
STATE ROUTE 198
FairOver: KINGS RIVER
06-KIN-198-5.71, Kings, CA
Built 1963 Load: 32.7 t ADT: 9,000
STATE ROUTE 198
FairOver: KINGS RIVER
06-KIN-198-5.71, Kings, CA
Built 1963 Load: 32.7 t ADT: 9,000
MILHAM AVE
FairOver: CALIFORNIA AQUEDUCT
BTWN I-5 & KETTLEMAN CITY, Kings, CA
Built 1965 Load: 32.7 t ADT: 50
ROAD M01
FairOver: RATTLESNAKE CREEK
40 MI. NORTH OF UPPERLAKE, Lake, CA
Built 1966 Load: 32.7 t ADT: 20
CLARK AVE
FairOver: LOS CERRITOS DRN CHAN
100FT S/O SPRING ST, Los Angeles, CA
Built 1954 Load: 32.7 t ADT: 23,479
SAN GABRIEL BLVD
FairOver: RUBIO WASH
0.3MI S/O AS TUNAS DR, Los Angeles, CA
Built 1914 Load: 32.7 t ADT: 32,542
DUARTE RD
FairOver: SANTA ANITA WASH
0.8MI W/O MYRTLE AVE, Los Angeles, CA
Built 1965 Load: 32.7 t ADT: 21,445
BARANCA AVE S
FairOver: BIG DALTON WASH
0.3MI S/O I-10 FWY, Los Angeles, CA
Built 1975 Load: 32.7 t ADT: 8,524
HERMOSA DR
FairOver: EATON WASH
0.3MI W/O ROSEMEAD BLVD, Los Angeles, CA
Built 1955 Load: 32.7 t ADT: 2,652
SITE 1 SOUTH ACCES
FairOver: ANAVERDE CREEK
Site 1 South Entrance int, Los Angeles, CA
Built 1954 Load: 32.7 t ADT: 40
SITE 1 NORTH ACCES
FairOver: ANAVERDE CREEK
Site 1 North Entrance int, Los Angeles, CA
Built 1954 Load: 32.7 t ADT: 40
SITE 2 NORTH ACCES
FairOver: ANAVERDE CREEK
Site 2 North Entrance/20t, Los Angeles, CA
Built 1954 Load: 32.7 t ADT: 20
ROAD 15
FairOver: CHOWCHILLA RIVER
SOUTH MERCED COUNTY LINE, Madera, CA
Built 1974 Load: 32.7 t ADT: 1,051
STATE ROUTE 1
FairOver: COYOTE CREEK
04-MRN-001-0.42, Marin, CA
Built 1954 Load: 32.7 t ADT: 30,500
EL PORTAL ROAD
FairOver: LOWER CASCADE CREEK OVER
5.0 miles east from El Po, Mariposa, CA
Built 2000 Load: 32.7 t ADT: 2,080
STATE ROUTE 1
FairOver: BUCK CREEK
05-MON-001-R33.67, Monterey, CA
Built 1965 Load: 32.7 t ADT: 2,000
US HIGHWAY 101 SB
FairOver: PARIS VALLEY ROAD
05-MON-101-R21.99, Monterey, CA
Built 1971 Load: 32.7 t ADT: 7,200
WOLF CREEK ROAD
FairOver: SOUTH WOLF CREEK
S DAVIS RD IN TX, Nevada, CA
Built 1950 Load: 32.7 t ADT: 146
EDWIN ROAD
FairOver: DRAINAGE DITCH
NORTH OF HENNESS ROAD, Nevada, CA
Built 2007 Load: 32.7 t ADT: 1,000
INTERSTATE 10 WB
FairOver: COXCOMB DITCH
08-RIV-010-R106.63, Riverside, CA
Built 1966 Load: 32.7 t ADT: 21,400
8TH STREET BRIDGE
FairOver: WATER CHANNEL
Just north of drive to Ma, Riverside, CA
Built 1960 Load: 32.7 t ADT: 2,000
ELKHORN BLVD
FairOver: NATOMAS E MAIN DRN CANAL
1.6 MI W RIO LINDA BLVD, Sacramento, CA
Built 1968 Load: 32.7 t ADT: 9,000
CENTER PARKWAY NB
FairOver: ELDER CREEK
0.1 MI N OF MACK RD, Sacramento, CA
Built 1978 Load: 32.7 t ADT: 5,498
INTERSTATE 10 EB
FairOver: BNSF RY & METROLINK
08-SBD-010-R22.36-COL, San Bernardino, CA
Built 1956 Load: 32.7 t ADT: 102,000
AMBOY RD
FairOver: 29 PALMS FL CONT CHANNEL
0.2 MI E OF UTAH TRAIL, San Bernardino, CA
Built 1977 Load: 32.7 t ADT: 1,925
DUNCAN ROAD
FairOver: CALIFORNIA AQUEDUCT
1.25 MI W BALDY MESA RD, San Bernardino, CA
Built 1971 Load: 32.7 t ADT: 236
EIGHTH STREET
FairOver: CUCAMONGA CREEK CHANNEL
0.15 MI E VINEYARD AVE, San Bernardino, CA
Built 1980 Load: 32.7 t ADT: 3,620
BARSTOW RD
FairOver: STORM DRAINAGE
0.2 MI. NE LOOP RD., San Bernardino, CA
Built 1960 Load: 32.7 t ADT: 1,920
TERRIER ROAD
FairOver: DEPOT LAKE
NWSSBFA, San Diego, CA
Built 1945 Load: 32.7 t ADT: 1
COUSER CANYON ROAD
FairOver: SAN LUIS REY RIVER
0.2MI S/O SR 76, San Diego, CA
Built 1994 Load: 32.7 t ADT: 700
INTERSTATE 5 SB
FairOver: MCAULIFFE RD
10-SJ-005-34.46, San Joaquin, CA
Built 1975 Load: 32.7 t ADT: 38,500
EIGHT MILE RD
FairOver: MOSHER SLOUGH
2.5 MI E OF SH 99, San Joaquin, CA
Built 1962 Load: 32.7 t ADT: 5,003
Showing 14,751-14,800 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.