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 41 NB
FairOver: SAN JOAQUIN RIVER OVRFLO
06-MAD-041-0.13, Madera, CA
Built 1999 Load: 36.0 t ADT: 28,000
AVENUE 19 1/2
FairOver: BERENDA SLOUGH
0.5 MI W OF RD 14, Madera, CA
Built 1973 Load: 36.0 t ADT: 50
ROUNDHOUSE RD 628
FairOver: PETERSON CREEK
0.5 MI NE OF SR 49, Madera, CA
Built 1957 Load: 36.0 t ADT: 462
REEVES CANYON ROAD
FairOver: MILL CREEK
4.3 MI W SR 101, Mendocino, CA
Built 1999 Load: 36.0 t ADT: 51
INTERSTATE 5 SB
FairOver: CALIFORNIA AQUEDUCT
10-MER-005-18.46, Merced, CA
Built 1966 Load: 36.0 t ADT: 15,500
OAKVILLE CROSS RD
FairOver: CONN CREEK
0.9 MI W SILVERADO TRAIL, Napa, CA
Built 1967 Load: 36.0 t ADT: 483
SEGERSTROM-SLATER
FairOver: SANTA ANA RIVER CHANNEL
0.3 MI. W/O HARBOR BLVD., Orange, CA
Built 1974 Load: 36.0 t ADT: 30,000
INTERSTATE 80
FairOver: UP RR, BNSF RY, & AMTRAK
03-PLA-080-38.98, Placer, CA
Built 1959 Load: 36.0 t ADT: 23,500
OLD RED BLUFF RD
FairOver: NORTH FORK FEATHER RIVER
7.0 MI W WARNER CREEK RD, Plumas, CA
Built 1956 Load: 36.0 t ADT: 130
BROOKFIELD DR
FairOver: MORRISON CREEK
0.3 MI W OF FRANKLIN BLVD, Sacramento, CA
Built 1977 Load: 36.0 t ADT: 2,553
AIR BASE DRIVE
FairOver: UP,BNSF,AMTRAK,ROSEVILLE
AT ROSEVILLE RD, Sacramento, CA
Built 1973 Load: 36.0 t ADT: 17,000
CENTER PARKWAY SB
FairOver: ELDER CREEK
0.1 MI N OF MACK RD, Sacramento, CA
Built 1960 Load: 36.0 t ADT: 4,661
SANTA FE STREET
FairOver: ROSE CANYON CREEK
0.8 MI N/O GARNET AVE, San Diego, CA
Built 1966 Load: 36.0 t ADT: 2,465
INTERSTATE 580
FairOver: HANSEN ROAD
10-SJ-580-12.03, San Joaquin, CA
Built 1967 Load: 36.0 t ADT: 13,300
LOMPICO RD
FairOver: LOMPICO CREEK
2.1 MI ABOVE ZAYANTE RD, Santa Cruz, CA
Built 1954 Load: 36.0 t ADT: 2,000
INTERSTATE 5
FairOver: DEETZ ROAD
02-SIS-005-R15.32, Siskiyou, CA
Built 1973 Load: 36.0 t ADT: 12,300
HALL RD
FairOver: JEWETT CREEK
0.4 MI S OF SOUTH AVE, Tehama, CA
Built 1982 Load: 36.0 t ADT: 268
STATE ROUTE 3
FairOver: TANGLE BLUE CREEK
02-TRI-003-79.39, Trinity, CA
Built 1971 Load: 36.0 t ADT: 120
WEST VAN DUZEN RD
FairOver: VAN DUZEN RIVER
4.5 MI N OF ZENIA-RUTH RD, Trinity, CA
Built 2014 Load: 36.0 t ADT: 200
AVENUE 328(CR J34)
FairOver: ST JOHNS RIVER
0.9 MI W OF RD 108, Tulare, CA
Built 1968 Load: 36.0 t ADT: 720
MOUNTAIN ROAD 33
FairOver: WHITE RIVER
6 MI SOUTH OF AVE 56, Tulare, CA
Built 1979 Load: 36.0 t ADT: 25
STATE ROUTE 33 SB
FairOver: CROOKED PALM ROAD
07-VEN-033-R3.27, Ventura, CA
Built 1970 Load: 36.0 t ADT: 13,750
JOHNSON DRIVE
FairOver: G1 ZONE 7 CHANNEL
500 FT S OF STONERIDGE DR, Alameda, CA
Built 2003 Load: 36.3 t ADT: 500
EDDY ROAD
FairOver: CLARKS DITCH
1.9 MI E OF I-5, Colusa, CA
Built 1976 Load: 36.3 t ADT: 244
LA GRANDE RD
FairOver: GLENN VALLEY SLOUGH
1.0 MI W OF DANLEY RD, Colusa, CA
Built 1971 Load: 36.3 t ADT: 35
INTERSTATE 580 WB
FairOver: SCOFIELD AVENUE
04-CC-580-5.80-RCH, Contra Costa, CA
Built 1956 Load: 36.3 t ADT: 34,000
S CALIFORNIA BLVD
FairOver: LAS TRAMPAS CREEK
0.1 MI N NEWELL AVE, Contra Costa, CA
Built 1958 Load: 36.3 t ADT: 20,800
KLAMATH MILL ROAD
FairOver: HOPPOW CREEK
500' E OF RT 101/169 SEP, Del Norte, CA
Built 1965 Load: 36.3 t ADT: 1,395
SOUTH FORK ROAD
FairOver: MIDDLE FORK SMITH RIVER
0.05 MI SE JCT SR199, Del Norte, CA
Built 1956 Load: 36.3 t ADT: 350
W NEES AVE/12TH ST
FairOver: CCID MAIN CANAL
0.1 MILES WEST OF SR 33, Fresno, CA
Built 1960 Load: 36.3 t ADT: 4,032
N WASHOE AVE
FairOver: DELTA-MENDOTA CANAL
0.25 MI N OF BULLARD AVE, Fresno, CA
Built 1949 Load: 36.3 t ADT: 1,240
BAIR ROAD
FairOver: SUPPLY CREEK
2 MI W OF LOOP RD, Humboldt, CA
Built 1950 Load: 36.3 t ADT: 69
KEYSTONE RD
FairOver: NEW RIVER
0.8 MI E/O FORRESTER RD, Imperial, CA
Built 1957 Load: 36.3 t ADT: 1,700
ANDRADE AVE
FairOver: ALL AMERICAN CANAL
0.5 MI N/O SR-98, Imperial, CA
Built 1967 Load: 36.3 t ADT: 14,000
STATE ROUTE 119
FairOver: CALIFORNIA AQUEDUCT
06-KER-119-14.92, Kern, CA
Built 1968 Load: 36.3 t ADT: 10,600
FRAZIER MTN ROAD
FairOver: CUDDY CREEK
2.5 MI WEST OF I-5, Kern, CA
Built 1970 Load: 36.3 t ADT: 6,300
25TH AVE
FairOver: CALIFORNIA AQUEDUCT
2.0 MI S OF I-5, Kings, CA
Built 1965 Load: 36.3 t ADT: 650
MAIN STREET
FairOver: KELSEY CREEK
JUST E/O BELL HILL ROAD, Lake, CA
Built 1946 Load: 36.3 t ADT: 3,502
SODA BAY RD
FairOver: MANNING CREEK
0.9 MI E/O SR 29, Lake, CA
Built 1956 Load: 36.3 t ADT: 1,545
U.S. HIGHWAY 395
FairOver: GALEPPI UC
02-LAS-395-R17.51, Lassen, CA
Built 1969 Load: 36.3 t ADT: 5,500
I 5
FairOver: 4TH STREET
07-LA-005-17.56-LA, Los Angeles, CA
Built 1960 Load: 36.3 t ADT: 235,620
INTERSTATE 10
FairOver: WESTWOOD BLVD
07-LA-010-R6.12-LA, Los Angeles, CA
Built 1963 Load: 36.3 t ADT: 258,000
INTERSTATE 210
FairOver: CALIFORNIA AVENUE
07-LA-210-R34.24-MNRO, Los Angeles, CA
Built 1966 Load: 36.3 t ADT: 258,000
INTERSTATE 210
FairOver: SHAMROCK AVENUE
07-LA-210-R34.49-MNRO, Los Angeles, CA
Built 1967 Load: 36.3 t ADT: 258,000
STATE ROUTE 57
FairOver: SUNSET CROSSING RD
07-LA-057-4.98-DMBR, Los Angeles, CA
Built 1970 Load: 36.3 t ADT: 145,000
RAMONA BLVD
FairOver: RUBIO WASH
0.1MI W/O ROSEMEAD BLVD, Los Angeles, CA
Built 1952 Load: 36.3 t ADT: 4,794
2ND ST (WB)
FairOver: SAN GABRIEL RIV
0.8MI E/O SR-1 HWY, Los Angeles, CA
Built 1964 Load: 36.3 t ADT: 20,882
ROAD 21
FairOver: DRY CREEK
N OF 8 MILE RD, Madera, CA
Built 1981 Load: 36.3 t ADT: 180
SIR-FRANCIS DRAKE
FairOver: SAN GERONIMO CREEK
7.6 MI E OF SR 1, Marin, CA
Built 1929 Load: 36.3 t ADT: 3,500
BUTTERFLY VLY RD
FairOver: E BR N FK FEATHER RIVER
0.5 MI SE/O SR 70, Plumas, CA
Built 1950 Load: 36.3 t ADT: 20
Showing 15,351-15,400 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.