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
CANAL SERVICE RD
UnknownOver: INTERSTATE 5
06-KER-005-68.00, Kern, CA
Built 1967 ADT: 35,000
MAIN DRAIN RD
UnknownOver: INTERSTATE 5
06-KER-005-69.55, Kern, CA
Built 1967 ADT: 35,000
STATE ROUTE 46
UnknownOver: INTERSTATE 5
06-KER-046-32.50, Kern, CA
Built 1967 ADT: 31,000
LOST HILLS RD
UnknownOver: INTERSTATE 5
06-KER-005-77.05, Kern, CA
Built 1970 ADT: 31,000
WEISER ROAD
UnknownOver: INTERSTATE 5
06-KER-005-80.01, Kern, CA
Built 1970 ADT: 31,000
TWISSELMAN RD
UnknownOver: INTERSTATE 5
06-KER-005-82.35, Kern, CA
Built 1970 ADT: 31,000
COUNTY LINE RD
UnknownOver: INTERSTATE 5
06-KER-005-87.02, Kern, CA
Built 1970 ADT: 31,000
DWR SERVICE RD
UnknownOver: INTERSTATE 5
06-KER-005-12.53, Kern, CA
Built 1967 ADT: 48,750
STATE ROUTE 178 WB
UnknownOver: ST RTE 204 & Q STREET
06-KER-178-R1.95-BKD, Kern, CA
Built 1967 ADT: 34,000
STATE ROUTE 178 EB
UnknownOver: ST RTE 204 & Q STREET
06-KER-178-R1.95-BKD, Kern, CA
Built 1967 ADT: 43,000
SR 178 EB RAMP
UnknownOver: SR 204 & Q STREET
06-KER-178-R1.95-BKD, Kern, CA
Built 1967 ADT: 43,000
SR 178
UnknownOver: SR 178 SPUR WB\24TH ST
06-KER-178-R1.90-BKD, Kern, CA
Built 1967 ADT: 25,900
E178-UNION AVE OFF
UnknownOver: 24TH STREET
06-KER-178-R1.90-BKD, Kern, CA
Built 1967 ADT: 8,500
BERNARD ST
UnknownOver: STATE ROUTE 178
06-KER-178-R3.80-BKD, Kern, CA
Built 1967 ADT: 51,000
HALEY ST
UnknownOver: STATE ROUTE 178
06-KER-178-R4.09-BKD, Kern, CA
Built 1967 ADT: 51,000
ALTA VISTA DR
UnknownOver: ST RTE 178
06-KER-178-R2.74-BKD, Kern, CA
Built 1967 ADT: 51,000
NILES ST
UnknownOver: STATE ROUTE 178
06-KER-178-R2.81-BKD, Kern, CA
Built 1967 ADT: 51,000
W178-N204 CONNECTR
UnknownOver: Q STREET
06-KER-178-R1.97-BKD, Kern, CA
Built 1967 ADT: 7,581
MT VERNON AVE
UnknownOver: STATE ROUTE 178
06-KER-178-R4.59-BKD, Kern, CA
Built 1970 ADT: 60,000
ROSAMOND BLVD
UnknownOver: STATE ROUTE 14
09-KER-014-R3.02, Kern, CA
Built 1968 ADT: 56,000
WILLOW SPRINGS RD
UnknownOver: STATE ROUTE 58
09-KER-058-R95.21, Kern, CA
Built 1970 ADT: 41,000
DENNISON ROAD
UnknownOver: STATE ROUTE 58
09-KER-058-R92.75, Kern, CA
Built 1970 ADT: 42,400
STATE ROUTE 202
UnknownOver: STATE ROUTE 58
09-KER-202-11.99, Kern, CA
Built 1970 ADT: 20,900
STATE ROUTE 58 WB
UnknownOver: UP RR,BNSF,TEHACHAPI BL
09-KER-058-R94.16, Kern, CA
Built 1970 ADT: 6,500
STATE ROUTE 58 EB
UnknownOver: UP RR,BNSF,TEHACHAPI BL
09-KER-058-R94.16, Kern, CA
Built 1970 ADT: 6,500
CAMERON ROAD
UnknownOver: STATE ROUTE 58
09-KER-058-R101.56, Kern, CA
Built 1970 ADT: 40,000
HERRING RD
UnknownOver: STATE ROUTE 99
06-KER-099-9.30, Kern, CA
Built 1967 ADT: 45,250
S CHESTER AVE OC
UnknownOver: ROUTE 58
06-KER-058-R53.52-BKD, Kern, CA
Built 1976 ADT: 40,500
KIMBERLINA RD
UnknownOver: STATE ROUTE 99
06-KER-099-R41.16, Kern, CA
Built 1968 ADT: 134,000
BORON AVENUE
UnknownOver: STATE ROUTE 58
09-KER-058-R142.88, Kern, CA
Built 1971 ADT: 31,100
BORAX ROAD
UnknownOver: STATE ROUTE 58
09-KER-058-R139.80, Kern, CA
Built 1971 ADT: 34,000
GEPHART ROAD
UnknownOver: STATE ROUTE 58
09-KER-058-R137.77, Kern, CA
Built 1971 ADT: 34,000
MILL STREET
UnknownOver: STATE ROUTE 58
09-KER-058-R91.67-THPI, Kern, CA
Built 1970 ADT: 42,400
20 MULE TEAM ROAD
UnknownOver: STATE ROUTE 58
09-KER-058-R136.40, Kern, CA
Built 1971 ADT: 34,000
BOUNDARY FLAT RD
UnknownOver: STATE ROUTE 178
06-KER-178-R39.88, Kern, CA
Built 1968 ADT: 4,200
STATE ROUTE 58 WB
UnknownOver: SR 184 (WEEDPATCH HWY)
06-KER-058-R59.43, Kern, CA
Built 1974 ADT: 14,700
STATE ROUTE 58 EB
UnknownOver: SR 184 (WEEDPATCH HWY)
06-KER-058-R59.43, Kern, CA
Built 1970 ADT: 21,100
VINELAND ROAD
UnknownOver: SR 58
06-KER-058-R60.45, Kern, CA
Built 1970 ADT: 32,500
EDISON ROAD
UnknownOver: SR 58
06-KER-058-R61.51, Kern, CA
Built 1970 ADT: 23,000
MALAGA ROAD
UnknownOver: SR 58
06-KER-058-R62.53, Kern, CA
Built 1970 ADT: 31,000
COMANCHE DRIVE
UnknownOver: SR 58
06-KER-058-R63.58, Kern, CA
Built 1970 ADT: 21,200
TEJON HWY
UnknownOver: SR 58
06-KER-058-R64.63, Kern, CA
Built 1970 ADT: 26,000
TOWER LINE ROAD
UnknownOver: SR 58
06-KER-058-R65.68, Kern, CA
Built 1970 ADT: 20,000
OSWELL ST
UnknownOver: ST RTE 178
06-KER-178-R5.60-BKD, Kern, CA
Built 1970 ADT: 60,000
DAWN ROAD
UnknownOver: STATE ROUTE 14
09-KER-014-R6.12, Kern, CA
Built 1972 ADT: 39,000
BACKUS ROAD
UnknownOver: STATE ROUTE 14
09-KER-014-R9.14, Kern, CA
Built 1972 ADT: 39,000
SILVER QUEEN ROAD
UnknownOver: STATE ROUTE 14
09-KER-014-R12.15, Kern, CA
Built 1972 ADT: 17,950
WASHINGTON STREET
UnknownOver: SR 58
06-KER-058-R55.92-BKD, Kern, CA
Built 1974 ADT: 65,000
STATE ROUTE 58 WB
UnknownOver: MT VERNON AVENUE
06-KER-058-R56.41, Kern, CA
Built 1974 ADT: 2,000
STATE ROUTE 58 EB
UnknownOver: MT VERNON AVENUE
06-KER-058-R56.41, Kern, CA
Built 1974 ADT: 2,000
Showing 1,201-1,250 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.
| Publisher | Kiznis Studio |
| Sources | FHWA National Bridge Inventory, public U.S. government datasets |