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 98
GoodOver: HEMLOCK MAIN CANAL
11-IMP-098-40.60, Imperial, CA
Built 1939 Load: 25.3 t ADT: 2,800
STATE ROUTE 29
GoodOver: SAINT HELENA CREEK
01-LAK-029-6.31, Lake, CA
Built 1934 Load: 25.3 t ADT: 10,900
STATE ROUTE 14
GoodOver: TICK CANYON WASH
07-LA-014-35.34, Los Angeles, CA
Built 1963 Load: 25.3 t ADT: 101,000
WINNETKA AVE
GoodOver: LOS ANGELES RIVER
0.25 M S/O VANOWEN ST, Los Angeles, CA
Built 1958 Load: 25.3 t ADT: 36,650
PASADENA AVE
GoodOver: ARROYO SECO CHANNEL
ATSR 110, Los Angeles, CA
Built 1940 Load: 25.3 t ADT: 15,500
STATE ROUTE 99 NB
GoodOver: ASH SLOUGH
06-MAD-099-26.80, Madera, CA
Built 1957 Load: 25.3 t ADT: 19,250
GREEN MT RD 613
GoodOver: CHAPMAN CREEK
4.3 MI W BAILEY FLATS RD, Madera, CA
Built 1968 Load: 25.3 t ADT: 105
STATE ROUTE 1
GoodOver: HILLSIDE
04-MRN-001-11.62, Marin, CA
Built 1982 Load: 25.3 t ADT: 4,100
U.S. HIGHWAY 101
GoodOver: CRAWFORD CREEK
01-MEN-101-14.62, Mendocino, CA
Built 1942 Load: 25.3 t ADT: 13,800
CR 54/CENTERVILLE
GoodOver: CANYON CREEK
9.1 MI S/E OF SH 299, Modoc, CA
Built 1958 Load: 25.3 t ADT: 100
STATE ROUTE 1
GoodOver: SAN JOSE CREEK
05-MON-001-71.18, Monterey, CA
Built 1965 Load: 25.3 t ADT: 14,200
PARTRICK ROAD
GoodOver: BROWNS VALLEY CREEK
NAPA, Napa, CA
Built 2014 Load: 25.3 t ADT: 300
STATE ROUTE 65
GoodOver: BEAR RIVER
03-PLA-065-R23.74, Placer, CA
Built 1965 Load: 25.3 t ADT: 16,800
RAGSDALE ROAD
GoodOver: ROCKDALE DITCH
1.3 MI E/O EAGLE MTN ROAD, Riverside, CA
Built 1932 Load: 25.3 t ADT: 200
RAGSDALE ROAD
GoodOver: DESERT CENTER DITCH
2.5 MI E/O EAGLE MTN ROAD, Riverside, CA
Built 1932 Load: 25.3 t ADT: 200
N WATT-N51 ON RAMP
GoodOver: ARCADE CREEK
03-SAC-051-8.06-SAC, Sacramento, CA
Built 1958 Load: 25.3 t ADT: 18,000
STATE ROUTE 79
GoodOver: SAMAGATUMA CREEK
11-SD-079-0.12, San Diego, CA
Built 1946 Load: 25.3 t ADT: 5,900
FRIARS RD
GoodOver: MURPHY CANYON RD
0.15MI W/O RTE 15, San Diego, CA
Built 1967 Load: 25.3 t ADT: 36,628
COPPEROPOLIS RD
GoodOver: MORMON SLOUGH
1.5 MI EAST MILTON RD, San Joaquin, CA
Built 1966 Load: 25.3 t ADT: 2,249
STATE ROUTE 1
GoodOver: OLD CREEK ROAD
05-SLO-001-R34.91, San Luis Obispo, CA
Built 1965 Load: 25.3 t ADT: 9,000
STATE ROUTE 152
GoodOver: PACHECO CREEK
04-SCL-152-30.37, Santa Clara, CA
Built 1939 Load: 25.3 t ADT: 30,750
INTERSTATE 5 SB
GoodOver: KLAMATH RIVER ROAD
02-SIS-005-R58.10L, Siskiyou, CA
Built 1970 Load: 25.3 t ADT: 7,050
INTERSTATE 5
GoodOver: KLAMATH RIVER ROAD
02-SIS-005-R58.10R, Siskiyou, CA
Built 1970 Load: 25.3 t ADT: 7,050
LEWIS RD
GoodOver: HORSE CREEK
1.0 MI N HAWKINS RD, Solano, CA
Built 1954 Load: 25.3 t ADT: 1,439
OLD RIVER RD
GoodOver: GREEN VALLEY CREEK
0.1 MI SE/O MARTINELLI RD, Sonoma, CA
Built 1949 Load: 25.3 t ADT: 150
RAWSON ROAD
GoodOver: HALL CREEK BRANCH
0.4 MI S OF SOUTH AVE, Tehama, CA
Built 1961 Load: 25.3 t ADT: 350
STATE ROUTE 3
GoodOver: LITTLE CREEK
02-TRI-003-25.55, Trinity, CA
Built 1955 Load: 25.3 t ADT: 1,450
VAN DUZEN ROAD
GoodOver: HOLLY CREEK
11.8 MI SOUTH SR 36, Trinity, CA
Built 1977 Load: 25.3 t ADT: 578
STATE ROUTE 99 NB
GoodOver: TULE RIVER OVERFLOW #2
06-TUL-099-22.05, Tulare, CA
Built 1949 Load: 25.3 t ADT: 21,500
STATE ROUTE 23
GoodOver: JANSS ROAD
07-VEN-023-R5.06-THOK, Ventura, CA
Built 1970 Load: 25.3 t ADT: 94,000
STATE ROUTE 23 SB
GoodOver: PEDERSON ROAD
07-VEN-023-R6.48-THOK, Ventura, CA
Built 1970 Load: 25.3 t ADT: 89,000
COUNTY ROAD 102
GoodOver: WILLOW SLOUGH BYPASS
JUST NORTH OF CR #29, Yolo, CA
Built 1997 Load: 25.3 t ADT: 8,046
INTERSTATE 680
GoodOver: ALAMEDA CREEK
04-ALA-680-R10.15, Alameda, CA
Built 1927 Load: 25.6 t ADT: 141,000
STATE ROUTE 99
GoodOver: JUNCTION DRAW
03-BUT-099-13.25, Butte, CA
Built 1952 Load: 25.6 t ADT: 10,000
STATE ROUTE 99
GoodOver: NANCE CANYON
03-BUT-099-26.14, Butte, CA
Built 1952 Load: 25.6 t ADT: 28,250
CONCORD BLVD
GoodOver: MOUNT DIABLO CREEK
0.3 MI E OF BAILEY RD, Contra Costa, CA
Built 1957 Load: 25.6 t ADT: 9,381
STATE ROUTE 32
GoodOver: TEHAMA-COLUSA CANAL
03-GLE-032-2.24, Glenn, CA
Built 1973 Load: 25.6 t ADT: 7,600
U.S. HIGHWAY 101
GoodOver: SALMON CREEK
01-HUM-101-67.87, Humboldt, CA
Built 1957 Load: 25.6 t ADT: 21,500
STATE ROUTE 111
GoodOver: GRAVEL WASH
11-IMP-111-45.16, Imperial, CA
Built 1950 Load: 25.6 t ADT: 3,600
INTERSTATE 8 WB
GoodOver: ALL AMERCN CANAL,ANDRADE
11-IMP-008-R91.07, Imperial, CA
Built 1973 Load: 25.6 t ADT: 10,200
TUPMAN ROAD
GoodOver: SHORT MAIN CANAL
1 MI SOUTH OF STATION RD, Kern, CA
Built 1974 Load: 25.6 t ADT: 460
PITNEY LN
GoodOver: ALLEY CREEK
0.3 MI E OF ELK MTN RD, Lake, CA
Built 1958 Load: 25.6 t ADT: 321
RIDGEWAY ST
GoodOver: SAN JOSE CRK
0.5MI N/O VALLEY BLVD, Los Angeles, CA
Built 1964 Load: 25.6 t ADT: 8,318
EB WEST CHANNEL RD
GoodOver: SANTA MONICA CYN CHANNEL
AT MESA RD, Los Angeles, CA
Built 1940 Load: 25.6 t ADT: 16,239
CR 16
GoodOver: FRESNO RIVER BYPASS
1.15 MI N OF AVE 14, Madera, CA
Built 1964 Load: 25.6 t ADT: 368
ROAD 16
GoodOver: DRY CREEK
2.0 MI N OF AVE 14, Madera, CA
Built 1964 Load: 25.6 t ADT: 368
CR 16
GoodOver: BERENDA CREEK
0.6 MI N OF AVE 17, Madera, CA
Built 1964 Load: 25.6 t ADT: 267
US HIGHWAY 101 SB
GoodOver: SAN ANTONIO RIVER & DR
05-MON-101-R6.66, Monterey, CA
Built 1965 Load: 25.6 t ADT: 8,100
SR 39 (BEACH BLVD)
GoodOver: FULLERTON CREEK
12-ORA-039-14.81-BPK, Orange, CA
Built 1958 Load: 25.6 t ADT: 51,000
DISNEYLAND FLYOVER
GoodOver: BALL ROAD
AT BALL ROAD, Orange, CA
Built 2000 Load: 25.6 t ADT: 18,200
Showing 18,951-19,000 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.