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 NB
UnknownOver: LASSEN AVE
03-BUT-099-R35.31, Butte, CA
Built 1966 ADT: 6,000
EATON AVE
UnknownOver: STATE ROUTE 99
03-BUT-099-R36.31, Butte, CA
Built 1966 ADT: 19,000
STATE ROUTE 99 SB
UnknownOver: EAST FIFTH AVE
03-BUT-099-R33.57-CHC, Butte, CA
Built 1966 ADT: 5,736
STATE ROUTE 99 NB
UnknownOver: EAST FIFTH AVE
03-BUT-099-R33.57-CHC, Butte, CA
Built 1966 ADT: 5,736
GARDEN DR
UnknownOver: STATE ROUTE 70
03-BUT-070-16.63, Butte, CA
Built 1963 ADT: 20,100
SKYWAY
UnknownOver: STATE ROUTE 99
03-BUT-099-R30.60-CHC, Butte, CA
Built 1965 ADT: 32,500
COHASSET HWY
UnknownOver: STATE ROUTE 99
03-BUT-099-R34.25-CHC, Butte, CA
Built 1966 ADT: 49,500
EAST 20TH ST WB
UnknownOver: STATE ROUTE 99
03-BUT-099-R31.50-CHC, Butte, CA
Built 1993 ADT: 49,500
EAST 20TH ST EB
UnknownOver: STATE ROUTE 99
03-BUT-099-R31.50-CHC, Butte, CA
Built 1965 ADT: 49,500
UP RR & BNSF RY
UnknownOver: STATE ROUTE 162
03-BUT-162-16.90-OVL, Butte, CA
Built 1986 ADT: 30,000
PENTZ ROAD
UnknownOver: STATE ROUTE 99
03-BUT-099-23.86, Butte, CA
Built 1975 ADT: 24,800
NB 149 TO SB 99 RP
UnknownOver: SR 99 AND SR 149
03-BUT-149-R4.80, Butte, CA
Built 2008 ADT: 13,750
STATE ROUTE 99 NB
UnknownOver: STATE ROUTE 149
03-BUT-099-R21.73R, Butte, CA
Built 2008 ADT: 13,750
S149-E70 CONNECTOR
UnknownOver: SR 149 & SR 70 WB
03-BUT-149-R0.01, Butte, CA
Built 2008 ADT: 7,500
STATE ROUTE 70 WB
UnknownOver: STATE ROUTE 149
03-BUT-070-R20.53L, Butte, CA
Built 2008 ADT: 13,750
PRIVATE ROAD
UnknownOver: STATE ROUTE 149
03-BUT-149-R1.05, Butte, CA
Built 2008 ADT: 13,750
CANYON HIGHLAND DR
UnknownOver: OROVILLE DAM BLVD
9.25 MI E FROM SH 99, Butte, CA
Built 1930 ADT: 4,348
UP RR & BNSF RY
UnknownOver: MYERS STREET
N BALDWIN AVE, Butte, CA
Built 1924 ADT: 4,791
UP RR & BNSF RY
UnknownOver: LINCOLN STREET
JUST N MITCHELL AVE, Butte, CA
Built 1924 ADT: 2,553
UP RR & BNSF RY
UnknownOver: HUNTOON STREET
HUNTOON STREET, Butte, CA
Built 1924 ADT: 3,331
CEMENT PLANT ROAD
UnknownOver: STATE ROUTE 49
10-CAL-049-16.46, Calaveras, CA
Built 1935 ADT: 6,950
STATE ROUTE 20
UnknownOver: 7TH ST, CNFR, E SIDE CNL
03-COL-020-R21.85, Colusa, CA
Built 1971 ADT: 500
HALL ST
UnknownOver: INTERSTATE ROUTE 5
03-COL-005-7.15, Colusa, CA
Built 1957 ADT: 28,500
LENAHAN ROAD
UnknownOver: INTERSTATE 5
03-COL-005-R30.85, Colusa, CA
Built 1970 ADT: 25,000
DELEVAN ROAD
UnknownOver: INTERSTATE 5
03-COL-005-R31.84, Colusa, CA
Built 1970 ADT: 25,000
HARRINGTON ROAD
UnknownOver: INTERSTATE 5
03-COL-005-R2.30, Colusa, CA
Built 1967 ADT: 30,000
GREENBAY ROAD
UnknownOver: INTERSTATE 5
03-COL-005-R3.15, Colusa, CA
Built 1967 ADT: 30,000
HAHN ROAD
UnknownOver: INTERSTATE 5
03-COL-005-R10.31, Colusa, CA
Built 1967 ADT: 28,500
MEYERS ROAD
UnknownOver: INTERSTATE ROUTE 5
03-COL-005-R13.75, Colusa, CA
Built 1967 ADT: 28,500
INTERSTATE 5 SB
UnknownOver: CNFR & OLD HWY 99W
03-COL-005-R29.22, Colusa, CA
Built 1971 ADT: 5,000
INTERSTATE 5 NB
UnknownOver: CNFR & OLD HWY 99W
03-COL-005-R29.25, Colusa, CA
Built 1971 ADT: 5,000
E ST
UnknownOver: INTERSTATE ROUTE 5
03-COL-005-R17.98, Colusa, CA
Built 1971 ADT: 27,500
HUSTED ROAD
UnknownOver: INTERSTATE ROUTE 5
03-COL-005-R15.91, Colusa, CA
Built 1971 ADT: 28,500
MAXWELL-COLUSA RD
UnknownOver: INTERSTATE ROUTE 5
03-COL-005-R26.73, Colusa, CA
Built 1971 ADT: 25,000
FRESHWATER ROAD
UnknownOver: INTERSTATE 5
03-COL-005-R19.31, Colusa, CA
Built 1971 ADT: 25,000
LURLINE AVE
UnknownOver: INTERSTATE ROUTE 5
03-COL-005-R22.74, Colusa, CA
Built 1971 ADT: 25,000
FAIRVIEW ROAD
UnknownOver: INTERSTATE ROUTE 5
03-COL-005-R24.72, Colusa, CA
Built 1971 ADT: 25,000
STATE ROUTE 20
UnknownOver: INTERSTATE 5
03-COL-020-R22.09, Colusa, CA
Built 1971 ADT: 27,500
SR 160 SB
UnknownOver: WILBUR AVENUE
04-CC-160-1.50, Contra Costa, CA
Built 1971 ADT: 23,000
INTERSTATE 80
UnknownOver: POTRERO AVE & S80 ON RMP
04-CC-080-1.67-ECR, Contra Costa, CA
Built 1956 ADT: 9,620
BNSF RY
UnknownOver: STATE ROUTE 4 EB
04-CC-004-R3.66R, Contra Costa, CA
Built 1925 ADT: 43,500
S242-S680 CONNECTR
UnknownOver: INTERSTATE 680
04-CC-242-R0.08-CND, Contra Costa, CA
Built 1963 ADT: 229,000
SR 160 SB
UnknownOver: E 18TH STREET
04-CC-160-1.00, Contra Costa, CA
Built 1971 ADT: 36,700
SR 160 NB
UnknownOver: E 18TH STREET
04-CC-160-1.00, Contra Costa, CA
Built 1971 ADT: 36,700
E24-PLEASANT HILL
UnknownOver: MOUNT DIABLO BOULEVARD
04-CC-024-R7.60-LFYT, Contra Costa, CA
Built 1971 ADT: 16,700
I 580 EB OFF RAMP
UnknownOver: BNSF RY & GARRARD BLVD
04-CC-580-R4.82-RCH, Contra Costa, CA
Built 1991 ADT: 3,000
EB ONRAMP
UnknownOver: BNSF RY & GARRARD BLVD
04-CC-580-R4.82-RCH, Contra Costa, CA
Built 1980 ADT: 3,000
I 580 EB
UnknownOver: BNSF RY & GARRARD BLVD
04-CC-580-R4.82-RCH, Contra Costa, CA
Built 1980 ADT: 3,000
I 580 WB
UnknownOver: BNSF RY & GARRARD BLVD
04-CC-580-R4.81-RCH, Contra Costa, CA
Built 1991 ADT: 3,000
CANAL BL-W580 ONRP
UnknownOver: BNSF RY & GARRARD BLVD
04-CC-580-R4.81-RCH, Contra Costa, CA
Built 1980 ADT: 3,000
Showing 451-500 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 |