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
AVENUE 22
FairOver: UP RR
0.25 MI NE/O RD 19, Madera, CA
Built 2009 Load: 32.4 t ADT: 1,000
AVE 12 (FIREBAUGH)
FairOver: CHOWCHILLA CANAL BYPASS
1.5 MI NE/O AVENUE 7 1/2, Madera, CA
Built 1992 Load: 32.4 t ADT: 750
CR 206
FairOver: MADERA CANAL
1.7 MI S MILLERTON RD, Madera, CA
Built 1987 Load: 32.4 t ADT: 1,200
ROAD 208
FairOver: COTTONWOOD CREEK
1.4 MI W OF ROAD 211, Madera, CA
Built 1986 Load: 32.4 t ADT: 75
CR 19
FairOver: BERENDA SLOUGH
0.2 MI S OF AVE 26, Madera, CA
Built 1991 Load: 32.4 t ADT: 170
AVENUE 14
FairOver: CHOWCHILLA CANAL BYPASS
1.7 MI EAST OF ROAD 9, Madera, CA
Built 1965 Load: 32.4 t ADT: 225
SKY RANCH RD (632)
FairOver: LEWIS CREEK
0.2 MI E RTE 41, Madera, CA
Built 1950 Load: 32.4 t ADT: 1,600
ON CR 221
FairOver: LITTLE FINE GOLD CREEK
0.4 MI N OF CR 223, Madera, CA
Built 1989 Load: 32.4 t ADT: 550
CEDAR VALLEY DRIVE
FairOver: LEWIS FORK FRESNO RIVER
1.3 MI NE STATE RTE 41, Madera, CA
Built 2002 Load: 32.4 t ADT: 100
AVENUE 18
FairOver: BERENDA CREEK
EAST OF CR 17.5, Madera, CA
Built 1994 Load: 32.4 t ADT: 300
ROAD 17.5
FairOver: BERENDA CREEK
0.2 MI N OF AVE 17.5, Madera, CA
Built 2003 Load: 32.4 t ADT: 60
AVENUE 15
FairOver: LITTLE DRY CREEK
1.5 MI WEST OF S.H 41, Madera, CA
Built 2008 Load: 32.4 t ADT: 1,000
ROAD 28
FairOver: COTTONWOOD CREEK
0.6MI N OF AVE 10, Madera, CA
Built 2011 Load: 32.4 t ADT: 161
YOSEMITE SPRINGS
FairOver: COARSEGOLD CREEK
0.3 MI W/O SR 41, Madera, CA
Built 2014 Load: 32.4 t ADT: 750
ROAD 200
FairOver: CRAZY CREEK
6.5 MI NE OF SR41, Madera, CA
Built 2012 Load: 32.4 t ADT: 2,574
RIVER VIEW DRIVE
FairOver: FRESNO RIVER
500 FT E. OF GOLDSIDE DR, Madera, CA
Built 1980 Load: 32.4 t ADT: 500
U.S. HIGHWAY 101
FairOver: N BRANCH GALLINAS CREEK
04-MRN-101-13.99-SRF, Marin, CA
Built 1951 Load: 32.4 t ADT: 159,000
STATE ROUTE 37 WB
FairOver: NOVATO CREEK
04-MRN-037-11.96-NVTO, Marin, CA
Built 1959 Load: 32.4 t ADT: 17,000
STATE ROUTE 37 EB
FairOver: NOVATO CREEK
04-MRN-037-11.96-NVTO, Marin, CA
Built 1959 Load: 32.4 t ADT: 17,000
STATE ROUTE 37
FairOver: SIMONDS SLOUGH
04-MRN-037-13.04-NVTO, Marin, CA
Built 1959 Load: 32.4 t ADT: 34,000
STATE ROUTE 37
FairOver: PETALUMA RIVER
04-MRN-037-14.47, Marin, CA
Built 1958 Load: 32.4 t ADT: 34,000
US HIGHWAY 101
FairOver: NORTH SAN PEDRO ROAD
04-MRN-101-12.69-SRF, Marin, CA
Built 1979 Load: 32.4 t ADT: 180,000
U.S. HIGHWAY 101
FairOver: FRANKLIN AV & NWP RR
04-MRN-101-R20.89-NVTO, Marin, CA
Built 1974 Load: 32.4 t ADT: 61,500
State Route 1
FairOver: MILLERTON GULCH
04-MRN-001-33.40, Marin, CA
Built 1997 Load: 32.4 t ADT: 2,300
OLEMA-BOLINAS RD
FairOver: PINE GULCH CREEK
1.3 MI S OF SR 1, Marin, CA
Built 1986 Load: 32.4 t ADT: 2,076
ALEXANDER RD
FairOver: STEMPLE CREEK
0.39 MI N TMALS-PETLMA RD, Marin, CA
Built 1962 Load: 32.4 t ADT: 60
MOUNT LASSEN DR NB
FairOver: MILLER CREEK
0.06 MI N LUCAS VALLEY RD, Marin, CA
Built 1965 Load: 32.4 t ADT: 980
CANYON ROAD
FairOver: SAN ANSELMO CREEK
0.1 MI S/O CASCADE DR, Marin, CA
Built 1998 Load: 32.4 t ADT: 100
BRIDGEGATE DR
FairOver: MILLER CREEK
0.1 MI N LUCAS VALLEY RD, Marin, CA
Built 1987 Load: 32.4 t ADT: 500
DOHERTY DR
FairOver: ARROYO HOLON
AT ROSE LANE, Marin, CA
Built 2014 Load: 32.4 t ADT: 6,381
ANDERSEN DRIVE
FairOver: MAHON CREEK
W OF ANDERSEN & LINDARO, Marin, CA
Built 1997 Load: 32.4 t ADT: 3,500
ROUTE 132
FairOver: HAYWARD CREEK
10-MPA-132-R0.92, Mariposa, CA
Built 2005 Load: 32.4 t ADT: 1,150
STATE ROUTE 132
FairOver: HAYWARD CREEK
10-MPA-132-R2.68, Mariposa, CA
Built 2005 Load: 32.4 t ADT: 1,150
FERRY ROAD
FairOver: MAXWELL CREEK
IN COULTERVILLE, Mariposa, CA
Built 1987 Load: 32.4 t ADT: 90
WHITE ROCK ROAD
FairOver: DEADMAN CREEK
0.6 MI W WESTFALL RD, Mariposa, CA
Built 1992 Load: 32.4 t ADT: 20
U.S. HIGHWAY 101
FairOver: OUTLET CREEK
01-MEN-101-50.66, Mendocino, CA
Built 1979 Load: 32.4 t ADT: 6,950
U.S. HIGHWAY 101
FairOver: TEN MILE CREEK
01-MEN-101-66.50, Mendocino, CA
Built 1953 Load: 32.4 t ADT: 6,750
U.S. HIGHWAY 101
FairOver: BRIDGES CREEK
01-MEN-101-97.47, Mendocino, CA
Built 1980 Load: 32.4 t ADT: 6,100
STATE ROUTE 20
FairOver: COLD CREEK
01-MEN-020-R39.16, Mendocino, CA
Built 1965 Load: 32.4 t ADT: 10,400
STATE ROUTE 1 SB
FairOver: OCEANSIDE BLUFF
01-MEN-001-3.81, Mendocino, CA
Built 2003 Load: 32.4 t ADT: 4,200
U.S. HIGHWAY 101
FairOver: ROCK CREEK
01-MEN-101-93.71, Mendocino, CA
Built 2000 Load: 32.4 t ADT: 6,100
STATE ROUTE 128
FairOver: DRY CREEK
01-MEN-128-43.44, Mendocino, CA
Built 2005 Load: 32.4 t ADT: 2,300
STATE ROUTE 128
FairOver: ANDERSON CREEK
01-MEN-128-28.29, Mendocino, CA
Built 2005 Load: 32.4 t ADT: 5,200
U.S. HIGHWAY 101
FairOver: PIETA CREEK
01-MEN-101-R5.94, Mendocino, CA
Built 2003 Load: 32.4 t ADT: 13,300
U.S. HIGHWAY 101
FairOver: SR 271 (@ PM 3.38)
01-MEN-101-R87.67, Mendocino, CA
Built 1967 Load: 32.4 t ADT: 6,150
STATE ROUTE 162
FairOver: CORRAL CREEK
01-MEN-162-2.21, Mendocino, CA
Built 1959 Load: 32.4 t ADT: 860
U.S. HIGHWAY 101
FairOver: BEAR PEN RD (PRIVATE)
01-MEN-101-R101.06, Mendocino, CA
Built 1976 Load: 32.4 t ADT: 6,100
U.S. HIGHWAY 101
FairOver: DORA CREEK
01-MEN-101-96.49, Mendocino, CA
Built 1985 Load: 32.4 t ADT: 6,100
U.S. HIGHWAY 101
FairOver: FORSYTHE CREEK
01-MEN-101-R31.88, Mendocino, CA
Built 1990 Load: 32.4 t ADT: 19,000
STATE ROUTE 1
FairOver: HILLSIDE
01-MEN-001-83.54, Mendocino, CA
Built 1985 Load: 32.4 t ADT: 1,185
Showing 12,901-12,950 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.