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 20
FairOver: PHIPPS CREEK
01-LAK-020-36.08, Lake, CA
Built 1993 Load: 32.4 t ADT: 6,300
LAKE ST
FairOver: CACHE CREEK
0.03 MI S/O DAM ROAD, Lake, CA
Built 1987 Load: 32.4 t ADT: 1,700
BIG VALLEY RD
FairOver: MCGOUGH SLOUGH
JUST SE ARGONAUT RD, Lake, CA
Built 1963 Load: 32.4 t ADT: 3,116
BIG VALLEY RD
FairOver: HILL CREEK
0.2 MI WEST OF FINLEY, Lake, CA
Built 1963 Load: 32.4 t ADT: 1,038
BURNS VALLEY RD
FairOver: BURNS VALLEY CREEK
NEAR CLEARLAKE HIGHLANDS, Lake, CA
Built 1990 Load: 32.4 t ADT: 1,200
JESSIE ST
FairOver: SEIGLER CANYON CREEK
0.1 MI E OF SR 53, Lake, CA
Built 1987 Load: 32.4 t ADT: 300
MERRITT ROAD
FairOver: KELSEY CREEK
500 FT E/O BIG VALLEY RD, Lake, CA
Built 2008 Load: 32.4 t ADT: 1,870
U.S. HIGHWAY 395
FairOver: LONG VALLEY CREEK
02-LAS-395-15.87, Lassen, CA
Built 1956 Load: 32.4 t ADT: 5,500
STATE ROUTE 36
FairOver: SUSAN RIVER
02-LAS-036-R26.72, Lassen, CA
Built 1964 Load: 32.4 t ADT: 15,300
U.S. HIGHWAY 395
FairOver: LONG VALLEY CREEK
02-LAS-395-28.00, Lassen, CA
Built 1946 Load: 32.4 t ADT: 5,500
STATE ROUTE 70
FairOver: LONG VALLEY CREEK
02-LAS-070-1.97, Lassen, CA
Built 1952 Load: 32.4 t ADT: 4,200
U.S. HIGHWAY 395
FairOver: SOUTH TERMO DITCH
02-LAS-395-R114.25, Lassen, CA
Built 1971 Load: 32.4 t ADT: 1,200
FISH AND GAME ROAD
FairOver: SUSAN RIVER
1.6 MI. EAST OF MAPES LN, Lassen, CA
Built 1938 Load: 32.4 t ADT: 100
RICHMOND ROAD
FairOver: SUSAN RIVER
JUST N. OF RIVERSIDE DR., Lassen, CA
Built 1995 Load: 32.4 t ADT: 3,300
ALEXANDER AVE
FairOver: SUSAN RIVER
0.22 MI S OF S.H. 36, Lassen, CA
Built 1986 Load: 32.4 t ADT: 4,850
ON COUNTY ROAD 320
FairOver: SKEDADDLE CREEK
19.9 MI S/E OF US 395, Lassen, CA
Built 1988 Load: 32.4 t ADT: 200
CR312-BLICKENSTAFF
FairOver: DEEP CUT (BAXTER) CREEK
2.0 MI NE OF ROUTE 395, Lassen, CA
Built 2002 Load: 32.4 t ADT: 130
LEAVITT LN (CR213)
FairOver: SUSAN RIVER OVERFLOW
0.1 MI N OF US 395, Lassen, CA
Built 2009 Load: 32.4 t ADT: 1,500
MAPES LANE RD 305
FairOver: SUSAN RIVER OVERFLOW # 3
3.1 MI E OF LAMBERT LANE, Lassen, CA
Built 2016 Load: 32.4 t ADT: 130
MAPES LANE RD 305
FairOver: SUSAN RIVER OVERFLOW # 5
3.3 MI E OF LAMBERT LANE, Lassen, CA
Built 2016 Load: 32.4 t ADT: 130
HACKSTAFF ROAD
FairOver: LONG VALLEY CREEK
0.4 MI NE OF CR 361, Lassen, CA
Built 2021 Load: 32.4 t ADT: 80
INTERSTATE 5
FairOver: GILROY STREET
07-LA-005-22.78-LA, Los Angeles, CA
Built 1961 Load: 32.4 t ADT: 264,292
U.S. HIGHWAY 101
FairOver: GOWER STREET
07-LA-101-6.91-LA, Los Angeles, CA
Built 1952 Load: 32.4 t ADT: 154,000
INTERSTATE 110
FairOver: E STREET
07-LA-110-2.97-LA, Los Angeles, CA
Built 1956 Load: 32.4 t ADT: 93,900
STATE ROUTE 1
FairOver: SUNSET BLVD STORM DRAIN
07-LA-001-39.33-LA, Los Angeles, CA
Built 1969 Load: 32.4 t ADT: 57,000
U.S. HIGHWAY 101
FairOver: CORBIN AVE
07-LA-101-22.75-LA, Los Angeles, CA
Built 1959 Load: 32.4 t ADT: 285,000
INTERSTATE 5
FairOver: LANARK STREET
07-LA-005-32.91-LA, Los Angeles, CA
Built 1960 Load: 32.4 t ADT: 187,358
INTERSTATE 405
FairOver: LOS ANGELES RIVER
07-LA-405-7.40-LBCH, Los Angeles, CA
Built 1963 Load: 32.4 t ADT: 279,000
INTERSTATE 405
FairOver: CENTINELA AVENUE
07-LA-405-25.27-ING, Los Angeles, CA
Built 1963 Load: 32.4 t ADT: 283,000
INTERSTATE 405
FairOver: SEPULVEDA BLVD
07-LA-405-25.46-CLC, Los Angeles, CA
Built 1963 Load: 32.4 t ADT: 284,000
INTERSTATE 5
FairOver: BROCK AVE STORM DRAIN
07-LA-005-8.92-DNY, Los Angeles, CA
Built 1953 Load: 32.4 t ADT: 239,700
U.S. HIGHWAY 101
FairOver: TUJUNGA WASH
07-LA-101-13.27-LA, Los Angeles, CA
Built 1959 Load: 32.4 t ADT: 286,000
INTERSTATE 405
FairOver: SLAUSON AVE
07-LA-405-26.08-CLC, Los Angeles, CA
Built 1960 Load: 32.4 t ADT: 274,000
ROUTE 10
FairOver: CORNING/GARTH STREET
07-LA-010-R8.65-LA, Los Angeles, CA
Built 1964 Load: 32.4 t ADT: 268,000
INTERSTATE 710
FairOver: LAGUNA CHANNEL
07-LA-710-25.26-MONP, Los Angeles, CA
Built 1961 Load: 32.4 t ADT: 127,000
STATE ROUTE 134
FairOver: CONCORD STREET
07-LA-134-R6.18-GNDL, Los Angeles, CA
Built 1968 Load: 32.4 t ADT: 242,000
STATE ROUTE 118
FairOver: IVERSON ROAD
07-LA-118-R1.09, Los Angeles, CA
Built 1968 Load: 32.4 t ADT: 155,000
INTERSTATE 210
FairOver: FIFTH AVENUE
07-LA-210-R32.61-MNRO, Los Angeles, CA
Built 1968 Load: 32.4 t ADT: 252,000
INTERSTATE 210 EB
FairOver: ARCADIA WASH
07-LA-210-R30.60-ADA, Los Angeles, CA
Built 1956 Load: 32.4 t ADT: 126,000
STATE ROUTE 210
FairOver: PUDDINGSTONE CHANNEL
07-LA-210-R46.35-LVN, Los Angeles, CA
Built 1970 Load: 32.4 t ADT: 31,500
U.S. HIGHWAY 101
FairOver: CABALLERO CREEK
07-LA-101-20.88-LA, Los Angeles, CA
Built 1959 Load: 32.4 t ADT: 285,000
STATE ROUTE 14
FairOver: VIA PRINCESSA
07-LA-014-R30.89, Los Angeles, CA
Built 1972 Load: 32.4 t ADT: 143,000
INTERSTATE 210
FairOver: DUNSMORE AVE
07-LA-210-R16.16-GNDL, Los Angeles, CA
Built 1972 Load: 32.4 t ADT: 156,000
INTERSTATE 210
FairOver: EATON WASH
07-LA-210-R28.86-PAS, Los Angeles, CA
Built 1976 Load: 32.4 t ADT: 269,000
53 2415G,N710-W105
FairOver: MLK JR-S710, WRIGHT RD
07-LA-710-R16.01-LYN, Los Angeles, CA
Built 1992 Load: 32.4 t ADT: 17,800
RTE 105 RAMPS
FairOver: DOMINGUEZ CHANNEL
07-LA-105-R4.59-HAW, Los Angeles, CA
Built 1988 Load: 32.4 t ADT: 18,054
S110-N&S405 CONN
FairOver: DOMINGUEZ CHANNEL
07-LA-110-9.13-LA, Los Angeles, CA
Built 1985 Load: 32.4 t ADT: 29,950
91&SB110-405 CONN
FairOver: DOMINGUEZ CHAN OFF-RAMP
07-LA-110-9.15-LA, Los Angeles, CA
Built 1985 Load: 32.4 t ADT: 8,560
E105-S710 CONN
FairOver: WRIGHT ROAD
07-LA-105-R13.14-LYN, Los Angeles, CA
Built 1990 Load: 32.4 t ADT: 217,000
E105-N&S605 CONN
FairOver: SAN GABRIEL RIVER
07-LA-105-R17.44-DNY, Los Angeles, CA
Built 1993 Load: 32.4 t ADT: 228,000
Showing 12,751-12,800 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.