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
CR 85
FairOver: PIT RIVER
APPROX 8 MI E OF LKT RD, Modoc, CA
Built 2006 Load: 32.4 t ADT: 100
JONES LN -CO RD 61
FairOver: MIDDLE CANAL
0.6 MI W SH 395, Modoc, CA
Built 2013 Load: 32.4 t ADT: 50
STATE ROUTE 158
FairOver: RUSH CREEK
09-MNO-158-5.90, Mono, CA
Built 1963 Load: 32.4 t ADT: 3,050
STATE ROUTE 108
FairOver: SARDINE CREEK
09-MNO-108-3.05, Mono, CA
Built 2002 Load: 32.4 t ADT: 1,910
STATE ROUTE 1
FairOver: ELKHORN SLOUGH
05-MON-001-96.44, Monterey, CA
Built 1985 Load: 32.4 t ADT: 30,500
STATE ROUTE 1 SB
FairOver: PEDESTRIAN WALKWAY
05-MON-001-R80.27-SNDC, Monterey, CA
Built 1968 Load: 32.4 t ADT: 29,500
STATE ROUTE 25
FairOver: LEWIS CREEK
05-MON-025-11.73, Monterey, CA
Built 1995 Load: 32.4 t ADT: 306
STATE ROUTE 68
FairOver: EL TORO CREEK
05-MON-068-13.30, Monterey, CA
Built 1997 Load: 32.4 t ADT: 24,200
STATE ROUTE 1
FairOver: HILLSIDE
05-MON-001-36.20, Monterey, CA
Built 2000 Load: 32.4 t ADT: 5,000
CRAZY HORSE CANYON
FairOver: WETLAND
05-MON-000-0.00, Monterey, CA
Built 2013 Load: 32.4 t ADT: 4,528
N101- ON/OFF-RAMP
FairOver: ELKHORN SLOUGH TRIBUTARY
05-MON-101-101.29, Monterey, CA
Built 2014 Load: 32.4 t ADT: 2,500
MCGOWAN ROAD
FairOver: PAJARO RIVER
0.5 MI S BEACH RD, Monterey, CA
Built 1992 Load: 32.4 t ADT: 1,500
CHUALAR RIVER RD
FairOver: SALINAS RIVER
2.0 MI W/O SH 101, Monterey, CA
Built 1991 Load: 32.4 t ADT: 3,200
SAN MIGUEL CANYON
FairOver: CARNEROS CREEK
4.7 MI N SH 101, Monterey, CA
Built 1962 Load: 32.4 t ADT: 18,300
DAVIS RD
FairOver: SALINAS RIVER
0.4 MI E RESERVATION RD, Monterey, CA
Built 2002 Load: 32.4 t ADT: 9,400
WEST LAKE STREET
FairOver: MAIN CANAL
INTX WESTLAKE & RICO ST, Monterey, CA
Built 1987 Load: 32.4 t ADT: 650
DEL MONTE BLVD
FairOver: CANYON DEL REY CREEK
BTWN SH 1 & SH 218, Monterey, CA
Built 1977 Load: 32.4 t ADT: 39,830
MURPHY ROAD
FairOver: PAJARO RIVER
1.2 KM S SR 129, Monterey, CA
Built 1998 Load: 32.4 t ADT: 4,600
ARROYO SECO ROAD
FairOver: ARROYO SECO RIVER
0.5 MI SW OF SR 101, Monterey, CA
Built 2007 Load: 32.4 t ADT: 3,900
TORO HILLS AVE
FairOver: TORO CREEK
AT TORO HILLS DRIVE, Monterey, CA
Built 1986 Load: 32.4 t ADT: 100
DANBURY STREET
FairOver: GABILAN CREEK
AT INDEPENDENCE BLVD, Monterey, CA
Built 1989 Load: 32.4 t ADT: 1,000
LAS CASITAS ST
FairOver: NATIVIDAD CREEK
0.2 MI. SE CONSTITUTION, Monterey, CA
Built 1986 Load: 32.4 t ADT: 5,076
COUNTRY MEADOWS RD
FairOver: SAN MIGUEL CANYON CREEK
330FT S. OF REECE CIRCLE, Monterey, CA
Built 1994 Load: 32.4 t ADT: 500
STATE ROUTE 29 SB
FairOver: NAPA VALLEY CORPORATE DR
04-NAP-029-R6.63, Napa, CA
Built 1981 Load: 32.4 t ADT: 22,500
STATE ROUTE 29
FairOver: STANLEY CREEK
04-NAP-029-R8.33, Napa, CA
Built 1981 Load: 32.4 t ADT: 48,000
SR 121 WB IMOLA AV
FairOver: NAPA RIVER
04-NAP-121-R5.30-NAP, Napa, CA
Built 2007 Load: 32.4 t ADT: 13,500
SR 121 EB IMOLA AV
FairOver: NAPA RIVER
04-NAP-121-R5.30-NAP, Napa, CA
Built 2007 Load: 32.4 t ADT: 13,500
COOK ROAD
FairOver: NAPA RIVER
1.7 MI N RT 49 YNTVL C R, Napa, CA
Built 1959 Load: 32.4 t ADT: 40
SILVERADO TRAIL
FairOver: RECTOR CREEK
1 MI N YOUNTVILE CROSS RD, Napa, CA
Built 1957 Load: 32.4 t ADT: 5,450
SILVERADO TRAIL
FairOver: SIMMONS CANYON CREEK
0.35 MI NW DUNAWEAL LANE, Napa, CA
Built 1978 Load: 32.4 t ADT: 1,170
SOSCOL AVE
FairOver: NAPA RIVER
0.1 MI S FIRST ST, Napa, CA
Built 1980 Load: 32.4 t ADT: 22,690
REDWOOD ROAD
FairOver: REDWOOD CREEK
JUST W MT VEEDER RD, Napa, CA
Built 1989 Load: 32.4 t ADT: 673
LAS AMIGAS RD
FairOver: CARNEROS CREEK
0.15 MI SW CUTTING WHARF, Napa, CA
Built 1987 Load: 32.4 t ADT: 2,100
POPE CANYON RD
FairOver: YOKEL CREEK
S POPE VALLY CROSS RD, Napa, CA
Built 1989 Load: 32.4 t ADT: 1,370
YOUNTVILLE CROSS R
FairOver: NAPA RIVER
0.9 MI SW SILVERADO TRAIL, Napa, CA
Built 1985 Load: 32.4 t ADT: 2,580
POPE CANYON ROAD
FairOver: POPE CREEK
0.3 MI N CHILES POPE VALY, Napa, CA
Built 1986 Load: 32.4 t ADT: 485
FOURTH AVE
FairOver: MURPHY CREEK
0.3 M S/O COOMBSVILLE RD, Napa, CA
Built 1994 Load: 32.4 t ADT: 1,350
SOSCOL AVE
FairOver: NAPA RIVER BYPASS
BTWN FIRST AND PEARL STR, Napa, CA
Built 2004 Load: 32.4 t ADT: 18,241
FIRST STREET
FairOver: NAPA CR & RIVER OVERFLOW
JUST EAST OF WEST STREET, Napa, CA
Built 2005 Load: 32.4 t ADT: 5,235
DEVLIN ROAD
FairOver: NV RR
0.5 MI W&S OF SR 29, Napa, CA
Built 2012 Load: 32.4 t ADT: 1
POPE CANYON ROAD (
FairOver: Pope Creek
5 mi NW of Lake Berryessa, Napa, CA
Built 1969 Load: 32.4 t ADT: 25
STATE ROUTE 49
FairOver: SOUTH YUBA RIVER
03-NEV-049-R21.86, Nevada, CA
Built 1994 Load: 32.4 t ADT: 3,850
STATE ROUTE 49
FairOver: MIDDLE YUBA RIVER
03-NEV-049-R32.62, Nevada, CA
Built 1994 Load: 32.4 t ADT: 1,650
INTERSTATE 80
FairOver: TRUCKEE RIVER
03-NEV-080-21.13, Nevada, CA
Built 2004 Load: 32.4 t ADT: 28,000
INTERSTATE 80
FairOver: TRUCKEE RIVER
03-NEV-080-20.84, Nevada, CA
Built 2004 Load: 32.4 t ADT: 28,000
STATE ROUTE 174
FairOver: WOLF CREEK
03-NEV-174-10.17-GVY, Nevada, CA
Built 1969 Load: 32.4 t ADT: 8,000
INTERSTATE 80 WB
FairOver: UP,BNSF,AMTRAK,TRUCKEE R
03-NEV-080-20.23, Nevada, CA
Built 1988 Load: 32.4 t ADT: 14,000
INTERSTATE 80 EB
FairOver: UP,BNSF,AMTRAK,TRUCKEE R
03-NEV-080-20.23, Nevada, CA
Built 1989 Load: 32.4 t ADT: 14,000
INTERSTATE 80 WB
FairOver: SOUTH YUBA RIVER
03-NEV-080-R2.63R, Nevada, CA
Built 1962 Load: 32.4 t ADT: 27,000
INTERSTATE 80 WB
FairOver: DONNER LAKE ROAD
03-NEV-080-R9.07L, Nevada, CA
Built 1963 Load: 32.4 t ADT: 12,400
Showing 13,051-13,100 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.