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
AUSTIN ROAD
GoodOver: WEBER CREEK
4.3 MI N FRENCH CAMP RD, San Joaquin, CA
Built 1973 Load: 32.4 t ADT: 1,947
CARPENTER ROAD
GoodOver: DUCK CREEK S BRANCH
AT MARIPOSA ROAD, San Joaquin, CA
Built 1974 Load: 32.4 t ADT: 841
WOODWARD ISLAND RD
GoodOver: MIDDLE RIVER
0.1 MI W BACON ISLAND RD, San Joaquin, CA
Built 2020 Load: 32.4 t ADT: 100
PORT STOCKTON EXPR
GoodOver: SAN JOAQUIN RIVER (BURNS
ROUGH AND READY ISLAND, San Joaquin, CA
Built 2007 Load: 32.4 t ADT: 1,000
RIVER ROAD
GoodOver: SSJID CANAL
AT VICTORY ROAD, San Joaquin, CA
Built 2005 Load: 32.4 t ADT: 2,272
POCK LANE
GoodOver: NORTH LITTLE JOHNS CREEK
N OF INDUSTRIAL DRIVE, San Joaquin, CA
Built 1993 Load: 32.4 t ADT: 1,500
TRINITY PARKWAY
GoodOver: BEAR CREEK
S OF W EIGHT MILE ROAD, San Joaquin, CA
Built 2008 Load: 32.4 t ADT: 6
LILAC STREET
GoodOver: WOODBRIDGE ID MAIN CANAL
0.4 MI N OF TURNER ROAD, San Joaquin, CA
Built 1993 Load: 32.4 t ADT: 3,784
EL RANCHO ROAD
GoodOver: TOM PAINE SLOUGH
N OF ROUTE 205, San Joaquin, CA
Built 2011 Load: 32.4 t ADT: 258
EIGHT MILE ROAD
GoodOver: UP RAILROAD TRACKS
EAST OF LOWER SAC. ROAD, San Joaquin, CA
Built 2013 Load: 32.4 t ADT: 15,100
EIGHT MILE ROAD
GoodOver: UP RAILROAD TRACKS
WEST OF LOWER SAC. ROAD, San Joaquin, CA
Built 2013 Load: 32.4 t ADT: 15,100
NORTH TULLY ROAD
GoodOver: BEAR CREEK
1 MILE SOUTH OF ROUTE 12, San Joaquin, CA
Built 2011 Load: 32.4 t ADT: 1,055
ARCH AIRPORT ROAD
GoodOver: UP RAILROAD TRACKS
0.56 MI EAST OF ROUTE 5, San Joaquin, CA
Built 2013 Load: 32.4 t ADT: 20,818
LATHROP ROAD
GoodOver: UPRR
0.8 MILE EAST OF I-5, San Joaquin, CA
Built 2015 Load: 32.4 t ADT: 14,498
NAVY DRIVE
GoodOver: SAN JOAQUIN RIVER
ROUGH AND READY ISLAND, San Joaquin, CA
Built 2018 Load: 32.4 t ADT: 8,000
MCHENRY AVE
GoodOver: SSJID CANAL
JUST S OF MEYERS AVE, San Joaquin, CA
Built 2018 Load: 32.4 t ADT: 18,676
VICTORY AVENUE
GoodOver: LONE TREE CREEK
1.9 MI N OF SR 120, San Joaquin, CA
Built 2020 Load: 32.4 t ADT: 464
WILDWOOD ROAD
GoodOver: TEMPLE CREEK
BETWEEN JACKTONE & MURPHY, San Joaquin, CA
Built 2018 Load: 32.4 t ADT: 500
STATE ROUTE 166
GoodOver: CUYAMA RIVER
05-SLO-166-R51.02, San Luis Obispo, CA
Built 1980 Load: 32.4 t ADT: 2,900
STATE ROUTE 1
GoodOver: LITTLE PICO CREEK
05-SLO-001-56.34, San Luis Obispo, CA
Built 1991 Load: 32.4 t ADT: 5,300
STATE ROUTE 41
GoodOver: ATASCADERO CREEK
05-SLO-041-13.05-ATAS, San Luis Obispo, CA
Built 1990 Load: 32.4 t ADT: 9,700
STATE ROUTE 41
GoodOver: ATASCADERO CREEK
05-SLO-041-13.18-ATAS, San Luis Obispo, CA
Built 1990 Load: 32.4 t ADT: 9,700
U.S. HIGHWAY 101
GoodOver: PERFUMA CREEK
05-SLO-101-25.95, San Luis Obispo, CA
Built 1948 Load: 32.4 t ADT: 56,000
STATE ROUTE 1
GoodOver: SAN LUISITO CREEK
05-SLO-001-25.71, San Luis Obispo, CA
Built 1959 Load: 32.4 t ADT: 18,700
STATE ROUTE 1
GoodOver: SAN BERNARDO CREEK
05-SLO-001-26.86, San Luis Obispo, CA
Built 1948 Load: 32.4 t ADT: 18,700
STATE ROUTE 58
GoodOver: SAN JUAN CREEK
05-SLO-058-35.49, San Luis Obispo, CA
Built 1985 Load: 32.4 t ADT: 440
U.S. HIGHWAY 101
GoodOver: WHITEHORSE DRAW
05-SLO-101-53.17, San Luis Obispo, CA
Built 1952 Load: 32.4 t ADT: 54,000
U.S. HIGHWAY 101
GoodOver: STENNER CREEK
05-SLO-101-28.70-SLO, San Luis Obispo, CA
Built 1978 Load: 32.4 t ADT: 62,000
US HIGHWAY 101 NB
GoodOver: SANTA MARGARITA CREEK
05-SLO-101-37.99, San Luis Obispo, CA
Built 1996 Load: 32.4 t ADT: 21,000
STATE ROUTE 58
GoodOver: INDIAN CREEK
05-SLO-058-17.73, San Luis Obispo, CA
Built 1953 Load: 32.4 t ADT: 925
US HIGHWAY 101 SB
GoodOver: ARROYO GRANDE CREEK
05-SLO-101-13.02-ARGD, San Luis Obispo, CA
Built 1959 Load: 32.4 t ADT: 24,000
W46-N101 CONNECTOR
GoodOver: SALINAS RIVER
05-SLO-046-29.81-PSRS, San Luis Obispo, CA
Built 1992 Load: 32.4 t ADT: 6,840
N101-E46 CONNECTOR
GoodOver: SALINAS RIVER
05-SLO-101-57.85-PSRS, San Luis Obispo, CA
Built 1992 Load: 32.4 t ADT: 7,000
STATE ROUTE 41
GoodOver: STADIUM PARK
05-SLO-041-R16.29-ATAS, San Luis Obispo, CA
Built 2000 Load: 32.4 t ADT: 7,300
STATE ROUTE 58
GoodOver: SALINAS RIVER
05-SLO-058-4.89, San Luis Obispo, CA
Built 1996 Load: 32.4 t ADT: 1,850
STATE ROUTE 1
GoodOver: OCEANSIDE BLUFF
05-SLO-001-73.00, San Luis Obispo, CA
Built 2003 Load: 32.4 t ADT: 3,000
STATE ROUTE 58
GoodOver: MIDLE FORK HUER HUERO CR
05-SLO-058-9.94, San Luis Obispo, CA
Built 2008 Load: 32.4 t ADT: 720
STATE ROUTE 46 WB
GoodOver: ESTRELLA RD,ESTRELLA RIV
05-SLO-046-R39.87, San Luis Obispo, CA
Built 2012 Load: 32.4 t ADT: 6,500
STATE ROUTE 46 EB
GoodOver: ESTRELLA RD,ESTRELLA RIV
05-SLO-046-R39.87, San Luis Obispo, CA
Built 2012 Load: 32.4 t ADT: 6,500
STATE ROUTE 1
GoodOver: ARROYO DE LOS PLAYANOS
05-SLO-001-64.62, San Luis Obispo, CA
Built 2017 Load: 32.4 t ADT: 2,200
STATE ROUTE 1
GoodOver: ARROYO DEL CORRAL
05-SLO-001-64.86, San Luis Obispo, CA
Built 2017 Load: 32.4 t ADT: 3,000
STATE ROUTE 1
GoodOver: ARROYO DEL OSO
05-SLO-001-65.65, San Luis Obispo, CA
Built 2017 Load: 32.4 t ADT: 3,000
STATE ROUTE 46 WB
GoodOver: CHOLAME CREEK
05-SLO-046-48.32, San Luis Obispo, CA
Built 2018 Load: 32.4 t ADT: 7,550
STATE ROUTE 46 EB
GoodOver: CHOLAME CREEK
05-SLO-046-48.32, San Luis Obispo, CA
Built 2018 Load: 32.4 t ADT: 7,550
US HIGHWAY 101 SB
GoodOver: SAN MARCOS CREEK
05-SLO-101-63.56, San Luis Obispo, CA
Built 2020 Load: 32.4 t ADT: 13,250
US HIGHWAY 101 NB
GoodOver: SAN MARCOS CREEK
05-SLO-101-63.57, San Luis Obispo, CA
Built 2020 Load: 32.4 t ADT: 13,250
STATE ROUTE 58
GoodOver: TROUT CREEK
05-SLO-058-3.08, San Luis Obispo, CA
Built 2021 Load: 32.4 t ADT: 2,900
STATE ROUTE 1
GoodOver: HILLSIDE
05-SLO-001-71.70, San Luis Obispo, CA
Built 2020 Load: 32.4 t ADT: 2,750
STATE ROUTE 1
GoodOver: OLD CREEK
05-SLO-001-34.46, San Luis Obispo, CA
Built 2023 Load: 32.4 t ADT: 7,300
STATE ROUTE 1
GoodOver: TORO CREEK
05-SLO-001-32.61, San Luis Obispo, CA
Built 2023 Load: 32.4 t ADT: 7,300
Showing 22,751-22,800 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.
| Publisher | Kiznis Studio |
| Sources | FHWA National Bridge Inventory, public U.S. government datasets |