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
INTERSTATE 5 SB
UnknownOver: W HAMMER LANE
10-SJ-005-32.66-STKN, San Joaquin, CA
Built 1970 ADT: 26,800
INTERSTATE 5 NB
UnknownOver: W HAMMER LANE
10-SJ-005-32.66-STKN, San Joaquin, CA
Built 1970 ADT: 26,800
INTERSTATE 5 NB
UnknownOver: W SWAIN ROAD
10-SJ-005-31.11, San Joaquin, CA
Built 1970 ADT: 13,300
S EL DORADO-S5 ON
UnknownOver: INTERSTATE 5
10-SJ-005-R20.95, San Joaquin, CA
Built 1971 ADT: 66,400
INTERSTATE 5 SB
UnknownOver: MATHEWS RD
10-SJ-005-R21.44, San Joaquin, CA
Built 1971 ADT: 650
INTERSTATE 5 NB
UnknownOver: MATHEWS RD
10-SJ-005-R21.44, San Joaquin, CA
Built 1971 ADT: 480
INTERSTATE 5 SB
UnknownOver: HOSPITAL ROAD
10-SJ-005-R21.70, San Joaquin, CA
Built 1971 ADT: 650
INTERSTATE 5
UnknownOver: EIGHTH STREET
10-SJ-005-24.64-STKN, San Joaquin, CA
Built 1971 ADT: 650
INTERSTATE 5 NB
UnknownOver: EIGHTH STREET
10-SJ-005-24.64-STKN, San Joaquin, CA
Built 1971 ADT: 650
INTERSTATE 5 SB
UnknownOver: STATE RTE 4 (CHARTER WY)
10-SJ-005-25.35-STKN, San Joaquin, CA
Built 1971 ADT: 12,800
INTERSTATE 5 NB
UnknownOver: STATE RTE 4 (CHARTER WY)
10-SJ-005-25.35-STKN, San Joaquin, CA
Built 1971 ADT: 27,200
E&W4-S5 CONNECTOR
UnknownOver: CHURCH STREET
10-SJ-004-R16.00-STKN, San Joaquin, CA
Built 1972 ADT: 1,100
INTERSTATE 5 SB
UnknownOver: CHURCH STREET
10-SJ-005-25.99-STKN, San Joaquin, CA
Built 1972 ADT: 2,000
INTERSTATE 5 NB
UnknownOver: CHURCH STREET
10-SJ-005-25.99-STKN, San Joaquin, CA
Built 1972 ADT: 250
INTERSTATE 5 SB
UnknownOver: STATE ROUTE 4
10-SJ-005-26.12-STKN, San Joaquin, CA
Built 1972 ADT: 27,200
INTERSTATE 5 NB
UnknownOver: STATE ROUTE 4
10-SJ-005-26.12-STKN, San Joaquin, CA
Built 1972 ADT: 21,200
N5-W4 & S5-E4 CONN
UnknownOver: I 5 & SR4,CONS,SLU,3 STS
10-SJ-005-25.87-STKN, San Joaquin, CA
Built 1972 ADT: 450
SR 4 WB
UnknownOver: E4-N5, W4-S5 CONN RAMPS
10-SJ-004-R16.02-STKN, San Joaquin, CA
Built 1972 ADT: 27,200
SR 4 EB
UnknownOver: E4-N5, W4-S5 CONN RAMPS
10-SJ-004-R16.01-STKN, San Joaquin, CA
Built 1972 ADT: 27,200
W4-N&S5 CONNECTOR
UnknownOver: LINCOLN, UP RR, BNSF RY
10-SJ-004-R16.20-STKN, San Joaquin, CA
Built 1972 ADT: 6,000
SR 4 WB
UnknownOver: LINCOLN, UP RR, BNSF RY
10-SJ-004-R16.20-STKN, San Joaquin, CA
Built 1972 ADT: 6,000
SR 4 EB
UnknownOver: LINCOLN, UP RR, BNSF RY
10-SJ-004-R16.20-STKN, San Joaquin, CA
Built 1972 ADT: 6,000
W4-N&S5 CONNECTOR
UnknownOver: MADISON STREET
10-SJ-004-R16.48-STKN, San Joaquin, CA
Built 1972 ADT: 500
I5-E4 & CENTER
UnknownOver: MADISON STREET
10-SJ-005-26.11-STKN, San Joaquin, CA
Built 1972 ADT: 950
STATE ROUTE 4
UnknownOver: MADISON STREET
10-SJ-004-R16.47-STKN, San Joaquin, CA
Built 1972 ADT: 500
STATE ROUTE 4
UnknownOver: MADISON STREET
10-SJ-004-R16.47-STKN, San Joaquin, CA
Built 1972 ADT: 500
STATE ROUTE 4 WB
UnknownOver: SPBR & GARFIELD AVE
10-SJ-004-R15.67-STKN, San Joaquin, CA
Built 1972 ADT: 510
STATE ROUTE 4 EB
UnknownOver: SPBR & GARFIELD AVE
10-SJ-004-R15.67-STKN, San Joaquin, CA
Built 1972 ADT: 510
INTERSTATE 5 SB
UnknownOver: INTERSTATE ROUTE 580
10-SJ-005-0.63L, San Joaquin, CA
Built 1971 ADT: 22,000
BLEWETT ROAD
UnknownOver: INTERSTATE ROUTE 5
10-SJ-005-2.46, San Joaquin, CA
Built 1971 ADT: 22,800
INTERSTATE 5 SB
UnknownOver: STATE ROUTE 132
10-SJ-005-3.42, San Joaquin, CA
Built 1971 ADT: 14,100
INTERSTATE 5 NB
UnknownOver: STATE ROUTE 132
10-SJ-005-3.42, San Joaquin, CA
Built 1971 ADT: 14,100
INTERSTATE 5 SB
UnknownOver: TURNER ROAD
10-SJ-005-41.66, San Joaquin, CA
Built 1979 ADT: 2,120
INTERSTATE 5 NB
UnknownOver: TURNER ROAD
10-SJ-005-41.66, San Joaquin, CA
Built 1979 ADT: 2,120
INTERSTATE 5 SB
UnknownOver: PELTIER ROAD
10-SJ-005-44.72, San Joaquin, CA
Built 1979 ADT: 1,930
INTERSTATE 5 NB
UnknownOver: PELTIER ROAD
10-SJ-005-44.71, San Joaquin, CA
Built 1979 ADT: 1,930
INTERSTATE 5 SB
UnknownOver: WALNUT GROVE ROAD
10-SJ-005-47.61, San Joaquin, CA
Built 1979 ADT: 3,340
INTERSTATE 5 NB
UnknownOver: WALNUT GROVE ROAD
10-SJ-005-47.60, San Joaquin, CA
Built 1979 ADT: 3,340
INTERSTATE 5 SB
UnknownOver: W120-S5 CONN RMP & UP RR
10-SJ-005-R14.80, San Joaquin, CA
Built 1971 ADT: 19,350
INTERSTATE 5 NB
UnknownOver: W120-S5 CONN RMP & UP RR
10-SJ-005-R14.82, San Joaquin, CA
Built 1971 ADT: 21,450
INTERSTATE 5 SB
UnknownOver: SAN JOAQUIN RIVER
10-SJ-005-R14.46, San Joaquin, CA
Built 1972 ADT: 2,013
I-5 NB & SR 120 EB
UnknownOver: SAN JOAQUIN RIVER
10-SJ-005-R14.46, San Joaquin, CA
Built 1971 ADT: 530
INTERSTATE 5 SB
UnknownOver: LATHROP RD
10-SJ-005-R17.52, San Joaquin, CA
Built 1971 ADT: 550
INTERSTATE 5 NB
UnknownOver: LATHROP RD
10-SJ-005-R17.52, San Joaquin, CA
Built 1971 ADT: 2,750
INTERSTATE 5 SB
UnknownOver: THORNTON ROAD
10-SJ-005-38.06, San Joaquin, CA
Built 1976 ADT: 3,080
INTERSTATE 5 NB
UnknownOver: THORNTON ROAD
10-SJ-005-38.06, San Joaquin, CA
Built 1976 ADT: 3,080
INTERSTATE 5 SB
UnknownOver: STATE ROUTE 12
10-SJ-005-39.55, San Joaquin, CA
Built 1979 ADT: 15,000
INTERSTATE 5 NB
UnknownOver: STATE ROUTE 12
10-SJ-005-39.55, San Joaquin, CA
Built 1979 ADT: 15,000
DURHAM FERRY RD
UnknownOver: INTERSTATE ROUTE 5
10-SJ-005-5.47, San Joaquin, CA
Built 1971 ADT: 22,800
INTERSTATE 5 SB
UnknownOver: CFNR & STATE ROUTE 33
10-SJ-005-6.41, San Joaquin, CA
Built 1971 ADT: 8,500
Showing 6,051-6,100 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.