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 99
FairOver: KERN RIVER
06-KER-099-25.35-BKD, Kern, CA
Built 1961 Load: 29.8 t ADT: 140,000
STATE ROUTE 29
FairOver: 11TH STREET
01-LAK-029-R42.68, Lake, CA
Built 1972 Load: 29.8 t ADT: 6,725
STATE ROUTE 29
FairOver: 11TH STREET
01-LAK-029-R42.68, Lake, CA
Built 1972 Load: 29.8 t ADT: 6,725
RD 306 (CAPEZOLLI)
FairOver: HARTSON SLOUGH
1.2 MI E/O RD 302, Lassen, CA
Built 1979 Load: 29.8 t ADT: 100
STATE ROUTE 14
FairOver: LOS ANGELES AQUEDUCT SHV
07-LA-014U-T27.37, Los Angeles, CA
Built 1969 Load: 29.8 t ADT: 74,000
COLORADO BLVD
FairOver: SANTA ANITA WASH
AT 2ND AVE, Los Angeles, CA
Built 1948 Load: 29.8 t ADT: 6,331
LINDERO CYN RD
FairOver: TRIUNFO CYN CRK
1.5MI S/O US-101 FWY, Los Angeles, CA
Built 1970 Load: 29.8 t ADT: 6,476
SAXON AVE
FairOver: ALHAMBRA WASH
0.5MI W/O SAN GABRIEL BL, Los Angeles, CA
Built 1936 Load: 29.8 t ADT: 1,326
U.S. HIGHWAY 101
FairOver: ST RTE 271 (@ PM 19.46)
01-MEN-101-R103.81, Mendocino, CA
Built 1970 Load: 29.8 t ADT: 6,100
HORNITOS ROAD
FairOver: MERCED RIVER
0.5 MI E MERCED FALLS RD, Merced, CA
Built 1973 Load: 29.8 t ADT: 300
GRANITEVILLE RD
FairOver: POORMAN CREEK
0.7 MI E OF GRANITEVILLE, Nevada, CA
Built 1930 Load: 29.8 t ADT: 27
STATE ROUTE 89
FairOver: WARD CREEK
03-PLA-089-5.81, Placer, CA
Built 1934 Load: 29.8 t ADT: 8,000
MEADOW GATE RD
FairOver: BEAR RIVER CANAL
0.85 MI E PLACER HILLS RD, Placer, CA
Built 1976 Load: 29.8 t ADT: 657
INTERSTATE 10 WB
FairOver: HAPPY GULCH
08-RIV-010-R75.67, Riverside, CA
Built 1965 Load: 29.8 t ADT: 9,150
STATE ROUTE 16
FairOver: FOLSOM SOUTH CANAL
03-SAC-016-T11.35, Sacramento, CA
Built 1971 Load: 29.8 t ADT: 9,200
STATE ROUTE 16
FairOver: LAGUNA CREEK
03-SAC-016-R11.53, Sacramento, CA
Built 1979 Load: 29.8 t ADT: 9,200
65TH ST EXPWY NB
FairOver: MORRISON CREEK
0.1 MI S OF LEMON HILL, Sacramento, CA
Built 1974 Load: 29.8 t ADT: 9,628
INTERSTATE 40
FairOver: AIRPORT WASH
08-SBD-040-R13.55, San Bernardino, CA
Built 1968 Load: 29.8 t ADT: 19,500
INTERSTATE 40
FairOver: AIRPORT WASH
08-SBD-040-R13.55, San Bernardino, CA
Built 1968 Load: 29.8 t ADT: 19,500
I STREET
FairOver: LYTLE CREEK CHANNEL
0.15 MI N OF MILL ST, San Bernardino, CA
Built 1973 Load: 29.8 t ADT: 4,926
FORT IRWIN RD
FairOver: STORM DRAINAGE
0.7 MI. NE CABLE RTE, San Bernardino, CA
Built 1986 Load: 29.8 t ADT: 6,760
FORT IRWIN RD
FairOver: STORM DRAINAGE
0.8 MI. NE CABLE RTE, San Bernardino, CA
Built 1983 Load: 29.8 t ADT: 6,760
FORT IRWIN RD
FairOver: STORM DRAINAGE
1 MILE NE BR005, San Bernardino, CA
Built 1986 Load: 29.8 t ADT: 6,760
NORTH LOOP ROAD
FairOver: STORM DRAINAGE
NR SOUTH LOOP RD, San Bernardino, CA
Built 1986 Load: 29.8 t ADT: 7,620
SOUTH LOOP RD
FairOver: STORM DRAINAGE
0.2 MI. E OUTER LOOP RD, San Bernardino, CA
Built 1986 Load: 29.8 t ADT: 6,350
INTERSTATE 8 EB
FairOver: MC CAIN VALLEY RD
11-SD-008-R67.83, San Diego, CA
Built 1967 Load: 29.8 t ADT: 8,150
S-15 ONRAMP
FairOver: MURPHY CREEK
11-SD-015-R6.74-SD, San Diego, CA
Built 1967 Load: 29.8 t ADT: 2,800
HARMONY GROVE RD
FairOver: ESCONDIDO CREEK
.1 MI E/O HOWARD ST, San Diego, CA
Built 1967 Load: 29.8 t ADT: 1,500
TULLY ROAD
FairOver: NORTH BRANCH PADDY CREEK
0.2 MI N SARGENT RD, San Joaquin, CA
Built 1971 Load: 29.8 t ADT: 403
VALLEY RD
FairOver: LOS BERROS CRK DIV CHNL
0.4 MI N SR 1, San Luis Obispo, CA
Built 1962 Load: 29.8 t ADT: 5,167
VIA REAL
FairOver: SANTA MONICA CREEK
0.1 MI W SANTA YNEZ AVE, Santa Barbara, CA
Built 1953 Load: 29.8 t ADT: 1,500
WATSONVILLE RD
FairOver: UVAS CREEK
1.2 MI N HECKER PASS HWY, Santa Clara, CA
Built 1965 Load: 29.8 t ADT: 2,880
INTERSTATE 5 SB
FairOver: TRUITMAN LANE
02-SIS-005-R36.02, Siskiyou, CA
Built 1969 Load: 29.8 t ADT: 7,550
INTERSTATE 5 NB
FairOver: TRUITMAN LANE
02-SIS-005-R36.02, Siskiyou, CA
Built 1969 Load: 29.8 t ADT: 7,550
OLD REDWOOD HWY
FairOver: MARK WEST CREEK
0.4 MI S/O AIRPORT BLVD, Sonoma, CA
Built 1956 Load: 29.8 t ADT: 16,600
MILL CREEK RD
FairOver: MILL CREEK
5.5 MI W OF WESTSIDE RD, Sonoma, CA
Built 1961 Load: 29.8 t ADT: 210
FITCH MOUNTAIN RD
FairOver: HILLSIDE
1.3 MI E JCT UNV ST HELDG, Sonoma, CA
Built 1999 Load: 29.8 t ADT: 400
SYCAMORE AVENUE
FairOver: M.I.D. LATERAL #4
0.1 MI N OF MORRIS AVE, Stanislaus, CA
Built 1936 Load: 29.8 t ADT: 4,532
PETTYJOHN ROAD
FairOver: SOUTH FORK COTTONWOOD CR
2.2 MI W OF VESTAL RD, Tehama, CA
Built 1966 Load: 29.8 t ADT: 40
EAST FK HAYFORK RD
FairOver: EAST FORK HAYFORK CREEK
1.8 MI E WILDWOOD ROAD, Trinity, CA
Built 1965 Load: 29.8 t ADT: 50
AVE 152
FairOver: TULE RIVER
1.25 MI W OF RD 224, Tulare, CA
Built 1948 Load: 29.8 t ADT: 5,700
ROAD 80 (CR J19)
FairOver: ST JOHNS RIVER
1.9 MI NORTH OF AVE 328, Tulare, CA
Built 1954 Load: 29.8 t ADT: 3,160
AVE 256
FairOver: OUTSIDE CREEK
0.2 MI EAST OF RD 164, Tulare, CA
Built 1963 Load: 29.8 t ADT: 475
CEDAR GROVE ROAD (
FairOver: LEWIS CREEK
KINGS CANYON HWY. MP 27.2, Fresno, CA
Built 1956 Load: 29.9 t ADT: 278
INTERSTATE 580 EB
FairOver: UP RR, BNSF RY, & ACE
04-ALA-580-R3.91L, Alameda, CA
Built 1938 Load: 30.1 t ADT: 93,000
STATE ROUTE 4
FairOver: EAST FORK CARSON RIVER
10-ALP-004-29.78, Alpine, CA
Built 1940 Load: 30.1 t ADT: 490
HAHN RD
FairOver: SOUTH BRANCH SAND CREEK
2.1 MI E OF OLD 99, Colusa, CA
Built 1969 Load: 30.1 t ADT: 1,541
ELINORA DRIVE
FairOver: GRAYSON CREEK
LESLIE DRIVE, Contra Costa, CA
Built 1958 Load: 30.1 t ADT: 3,400
W169-N101 CONNECTR
FairOver: HOPPOW CREEK
01-DN-169-R0.03, Del Norte, CA
Built 1965 Load: 30.1 t ADT: 430
STATE ROUTE 99
FairOver: ABANDONED RR ROW
06-FRE-099-27.31-FRE, Fresno, CA
Built 1960 Load: 30.1 t ADT: 32,500
Showing 11,701-11,750 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.