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
COUNTY ROAD 39
UnknownOver: INTERSTATE 5
03-GLE-005-R13.90, Glenn, CA
Built 1966 ADT: 25,500
COUNTY ROAD 48
UnknownOver: INTERSTATE 5
03-GLE-005-R10.88, Glenn, CA
Built 1966 ADT: 25,500
STATE ROUTE 162
UnknownOver: INTERSTATE 5
03-GLE-162-65.50-WLOS, Glenn, CA
Built 1966 ADT: 26,000
COUNTY ROAD 35
UnknownOver: INTERSTATE 5
03-GLE-005-R15.91, Glenn, CA
Built 1966 ADT: 25,500
COUNTY ROAD 33
UnknownOver: INTERSTATE 5
03-GLE-005-R16.80, Glenn, CA
Built 1966 ADT: 25,500
COUNTY ROAD 27
UnknownOver: INTERSTATE 5
03-GLE-005-R20.82, Glenn, CA
Built 1966 ADT: 25,500
COUNTY ROAD 25
UnknownOver: INTERSTATE 5
03-GLE-005-R21.82, Glenn, CA
Built 1966 ADT: 25,500
COUNTY ROAD 24
UnknownOver: INTERSTATE 5
03-GLE-005-R22.81, Glenn, CA
Built 1966 ADT: 25,500
COUNTY ROAD 20
UnknownOver: INTERSTATE 5
03-GLE-005-R23.81, Glenn, CA
Built 1966 ADT: 25,500
COUNTY ROAD 3
UnknownOver: INTERSTATE 5
03-GLE-005-R28.56, Glenn, CA
Built 1966 ADT: 24,600
COUNTY ROAD 16
UnknownOver: INTERSTATE 5
03-GLE-005-R24.82, Glenn, CA
Built 1966 ADT: 25,500
COUNTY ROAD 7
UnknownOver: INTERSTATE 5
03-GLE-005-R27.81, Glenn, CA
Built 1966 ADT: 24,600
COUNTY ROAD 28
UnknownOver: INTERSTATE 5
03-GLE-005-R19.81, Glenn, CA
Built 1966 ADT: 25,500
STATE ROUTE 32
UnknownOver: INTERSTATE 5
03-GLE-032-L0.01, Glenn, CA
Built 1966 ADT: 24,700
COUNTY ROAD 57
UnknownOver: INTERSTATE 5
03-GLE-005-R7.61, Glenn, CA
Built 1966 ADT: 26,000
COUNTY ROAD 60B
UnknownOver: INTERSTATE 5
03-GLE-005-R5.58, Glenn, CA
Built 1970 ADT: 25,500
COUNTY ROAD 68
UnknownOver: INTERSTATE 5
03-GLE-005-R1.52, Glenn, CA
Built 1970 ADT: 25,500
SR 255
UnknownOver: U.S. HIGHWAY 101
01-HUM-255-8.77-ARC, Humboldt, CA
Built 1965 ADT: 34,600
SEVENTH ST
UnknownOver: US HIGHWAY 101
01-HUM-101-86.10-ARC, Humboldt, CA
Built 1966 ADT: 34,600
6TH STREET
UnknownOver: US HIGHWAY 101
01-HUM-101-98.36, Humboldt, CA
Built 1960 ADT: 8,800
U.S. HIGHWAY 101
UnknownOver: ST RTE 254-S101 ON RAMP
01-HUM-101-35.70, Humboldt, CA
Built 1958 ADT: 250
US HIGHWAY 101
UnknownOver: SR 254,SOUTH FORK EEL RV
01-HUM-101-R17.89, Humboldt, CA
Built 1964 ADT: 690
U.S. HIGHWAY 101
UnknownOver: S101-ST RTE 254
01-HUM-101-39.16, Humboldt, CA
Built 1958 ADT: 250
HUMBOLDT HILL ROAD
UnknownOver: US HIGHWAY 101
01-HUM-101-73.72, Humboldt, CA
Built 1963 ADT: 32,400
CRANNELL ROAD
UnknownOver: US HIGHWAY 101
01-HUM-101-R97.02, Humboldt, CA
Built 1964 ADT: 10,500
U.S. HIGHWAY 101
UnknownOver: SFK EEL RIVER,MATTOLE RD
01-HUM-101-35.75, Humboldt, CA
Built 1958 ADT: 120
US HIGHWAY 101 SB
UnknownOver: WEST END RD,CREEK, NCRRA
01-HUM-101-87.84-ARC, Humboldt, CA
Built 1956 ADT: 1,000
US HIGHWAY 101 NB
UnknownOver: WEST END RD,CREEK, NCRRA
01-HUM-101-87.84-ARC, Humboldt, CA
Built 1929 ADT: 1,000
US HIGHWAY 101
UnknownOver: STATE ROUTE 211
01-HUM-101-64.29, Humboldt, CA
Built 1957 ADT: 5,300
STATE ROUTE 254
UnknownOver: U.S. HIGHWAY 101
01-HUM-254-19.94, Humboldt, CA
Built 1961 ADT: 5,400
PESULA ROAD
UnknownOver: US HIGHWAY 101
01-HUM-101-31.61, Humboldt, CA
Built 1961 ADT: 5,400
U.S. HIGHWAY 101
UnknownOver: US 101 ON&OFF RAMP,NCRRA
01-HUM-101-70.61, Humboldt, CA
Built 1962 ADT: 250
US HIGHWAY 101
UnknownOver: SR 254 AVE OF THE GIANTS
01-HUM-101-27.92, Humboldt, CA
Built 1963 ADT: 710
U.S. HIGHWAY 101
UnknownOver: KENMAR ROAD
01-HUM-101-59.50-FTA, Humboldt, CA
Built 1962 ADT: 458
TWELFTH ST
UnknownOver: U.S. HIGHWAY 101
01-HUM-101-60.49, Humboldt, CA
Built 1962 ADT: 17,900
US HIGHWAY 101
UnknownOver: S101-MAIN ON&OFF,NCRRA
01-HUM-101-61.53-FTA, Humboldt, CA
Built 1962 ADT: 17,900
GUINTOLI LANE
UnknownOver: US HIGHWAY 101
01-HUM-101-88.80-ARC, Humboldt, CA
Built 1969 ADT: 12,900
STATE ROUTE 299
UnknownOver: US HIGHWAY 101
01-HUM-299-0.01-ARC, Humboldt, CA
Built 1956 ADT: 33,000
LOLETA DR
UnknownOver: US HIGHWAY 101
01-HUM-101-65.95, Humboldt, CA
Built 1962 ADT: 21,500
HOOKTON ROAD
UnknownOver: US HIGHWAY 101
01-HUM-101-68.21, Humboldt, CA
Built 1962 ADT: 21,500
SCHOOL ROAD
UnknownOver: US HIGHWAY 101
01-HUM-101-R91.47, Humboldt, CA
Built 1964 ADT: 12,900
US HIGHWAY 101 SB
UnknownOver: AIRPORT ROAD
01-HUM-101-R93.85, Humboldt, CA
Built 1964 ADT: 100
US HIGHWAY 101 NB
UnknownOver: AIRPORT ROAD
01-HUM-101-R93.85, Humboldt, CA
Built 1964 ADT: 200
MURRAY ROAD
UnknownOver: US HIGHWAY 101
01-HUM-101-R92.99, Humboldt, CA
Built 1964 ADT: 12,900
SR 200 (CENTRAL)
UnknownOver: US HIGHWAY 101
01-HUM-200-R0.01, Humboldt, CA
Built 1964 ADT: 33,000
HILLER ROAD
UnknownOver: US HIGHWAY 101
01-HUM-101-R91.99, Humboldt, CA
Built 1964 ADT: 12,900
SALMON CREEK ROAD
UnknownOver: US HIGHWAY 101
01-HUM-101-25.01, Humboldt, CA
Built 1962 ADT: 5,100
SR 200 (N BANK RD)
UnknownOver: STATE ROUTE 299
01-HUM-200-R2.66, Humboldt, CA
Built 1965 ADT: 11,200
SPROWL CREEK ROAD
UnknownOver: US HIGHWAY 101
01-HUM-101-R11.12, Humboldt, CA
Built 1967 ADT: 5,000
REDWOOD DR
UnknownOver: US HIGHWAY 101
01-HUM-101-R11.50, Humboldt, CA
Built 1966 ADT: 5,000
Showing 1,001-1,050 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 |