Total Bridges
27,040
Public highway bridges in California
State profile · Below median Poor share
California bridge safety
Condition ratings, load ratings, and Poor-condition data for every public highway bridge in California, based on the FHWA National Bridge Inventory.
- 27,040
- Public bridges
- 32.5%
- Good condition
- 4.6%
- Poor condition
Data updated May 2026
Good Condition
32.5%
8,777 bridges rated 7-9
-17.5pp vs 50% benchmark
Poor Condition
4.6%
1,244 bridges whose lowest applicable component is rated 0-4
-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 - Poor-condition share 15.3%
National avg
Lower is better. Bar maxes at 30% (worst-state ceiling). National average sits at 7.0%.
Condition Distribution
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 by Poor-condition share (lower share = better)
States are ranked by the share of bridges whose lowest applicable component rating is 4 or below. This describes recorded condition; it does not measure funding effectiveness or live crossing safety. States here sit immediately above and below California on the same metric.
OH
Ohio
4.54% top marginal rate
NJ
New Jersey
4.59% top marginal rate
CA
California
4.60% top marginal rate
AR
Arkansas
4.71% top marginal rate
WA
Washington
4.81% top marginal rate
Bridges Needing Most Attention in California
Six lowest-condition bridges in California, ranked by the portal's composite display score. Inspection intervals are risk-based under current NBIS rules.
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
PoorOver: 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
RYAN CREEK ROAD
GoodOver: RYAN CREEK
0.25 MI WEST OF HWY 101, Mendocino, CA
Built 2011 Load: 32.4 t ADT: 150
SCHOOL WAY
GoodOver: WEST BRANCH RUSSIAN RIV
1.14 MI FROM US 101, Mendocino, CA
Built 2016 Load: 32.4 t ADT: 3,521
SHERWOOD RD, CR311
GoodOver: ROWES CREEK
6.0 MI NW US 101, Mendocino, CA
Built 2020 Load: 32.4 t ADT: 721
EAST HILL ROAD
GoodOver: DAVIS CREEK
1.2 MI EAST OF HILLTOP DR, Mendocino, CA
Built 2019 Load: 32.4 t ADT: 2,000
POWERHOUSE RD 248A
GoodOver: WILLIAMS CREEK
0.3 MI SOUTH GIBSON LANE, Mendocino, CA
Built 2020 Load: 32.4 t ADT: 134
NORTH MAIN STREET
GoodOver: WILLITS CREEK (MILL CRK)
0.8 MI N OF SR 20-MAIN ST, Mendocino, CA
Built 1923 Load: 32.4 t ADT: 7,200
FOREST ROAD 200
GoodOver: CHAMBERLAIN CREEK
1.0 MI N JCT SR 20, Mendocino, CA
Built 1958 Load: 32.4 t ADT: 75
FOREST ROAD 200
GoodOver: PARK GULCH
0.5 MI N JCT SR 20, Mendocino, CA
Built 1958 Load: 32.4 t ADT: 75
Pole Line Road
GoodOver: San Luis Canal
4.5 MI SE of SR 165, Merced, CA
Built 1968 Load: 32.4 t ADT: 1,690
Pole Line Road
GoodOver: San Luis Canal
2.4 MI SE OF SR 165, Merced, CA
Built 1968 Load: 32.4 t ADT: 210
Pioneer Road
GoodOver: San Luis Canal
1.1 MI SE BILLY WRIGHT RD, Merced, CA
Built 1968 Load: 32.4 t ADT: 50
Mervel Ave
GoodOver: San Luis Canal
0.1 MI W Ortigalita Rd, Merced, CA
Built 1968 Load: 32.4 t ADT: 310
STATE ROUTE 99 SB
GoodOver: OWENS CREEK
10-MER-099-10.55, Merced, CA
Built 2008 Load: 32.4 t ADT: 19,500
STATE ROUTE 99 NB
GoodOver: OWENS CREEK
10-MER-099-10.55, Merced, CA
Built 2008 Load: 32.4 t ADT: 19,500
STATE ROUTE 99 SB
GoodOver: MILES CREEK
10-MER-099-10.83, Merced, CA
Built 2008 Load: 32.4 t ADT: 19,500
STATE ROUTE 99 NB
GoodOver: MILES CREEK
10-MER-099-10.83, Merced, CA
Built 2008 Load: 32.4 t ADT: 19,500
STATE ROUTE 99 SB
GoodOver: MERCED RIVER
10-MER-099-R31.00, Merced, CA
Built 1997 Load: 32.4 t ADT: 28,000
STATE ROUTE 152
GoodOver: LOS BANOS CREEK
10-MER-152-18.20, Merced, CA
Built 1968 Load: 32.4 t ADT: 24,850
STATE ROUTE 99 SB
GoodOver: MILES CREEK OVERFLOW
10-MER-099-10.98, Merced, CA
Built 2008 Load: 32.4 t ADT: 19,500
STATE ROUTE 99 NB
GoodOver: MILES CREEK OVERFLOW
10-MER-099-10.98, Merced, CA
Built 2008 Load: 32.4 t ADT: 19,500
STATE ROUTE 59
GoodOver: DEADMANS CREEK
10-MER-059-7.90, Merced, CA
Built 1989 Load: 32.4 t ADT: 5,000
STATE ROUTE 59
GoodOver: DANA SLOUGH
10-MER-059-28.18, Merced, CA
Built 1986 Load: 32.4 t ADT: 1,425
STATE ROUTE 140
GoodOver: BEAR CREEK
10-MER-140-32.95, Merced, CA
Built 2001 Load: 32.4 t ADT: 6,000
STATE ROUTE 59
GoodOver: ESCALADIAN CANAL
10-MER-059-25.45, Merced, CA
Built 1989 Load: 32.4 t ADT: 1,425
STATE ROUTE 140
GoodOver: BEAR RANCH CREEK
10-MER-140-38.69-MER, Merced, CA
Built 1964 Load: 32.4 t ADT: 7,400
STATE ROUTE 33
GoodOver: VOLTA WASTEWAY
10-MER-033-R16.31, Merced, CA
Built 1952 Load: 32.4 t ADT: 9,250
STATE ROUTE 33
GoodOver: NEWMAN WASTEWAY
10-MER-033-29.60, Merced, CA
Built 1952 Load: 32.4 t ADT: 7,100
STATE ROUTE 165
GoodOver: SLOUGH NO 3
10-MER-165-21.52, Merced, CA
Built 1959 Load: 32.4 t ADT: 5,100
STATE ROUTE 165
GoodOver: SLOUGH NO 5
10-MER-165-24.82, Merced, CA
Built 1959 Load: 32.4 t ADT: 5,100
STATE ROUTE 99 SB
GoodOver: MILES CREEK OVERFLOW
10-MER-099-11.41, Merced, CA
Built 2008 Load: 32.4 t ADT: 19,500
STATE ROUTE 99 NB
GoodOver: MILES CREEK OVERFLOW
10-MER-099-11.41, Merced, CA
Built 2008 Load: 32.4 t ADT: 19,500
STATE ROUTE 99
GoodOver: DUTCHMAN CREEK
10-MER-099-2.70, Merced, CA
Built 2015 Load: 32.4 t ADT: 19,500
STATE ROUTE 99
GoodOver: DUTCHMAN CREEK
10-MER-099-2.70, Merced, CA
Built 2015 Load: 32.4 t ADT: 19,500
STATE ROUTE 99
GoodOver: SOUTH DUTCHMAN CREEK
10-MER-099-1.60, Merced, CA
Built 2015 Load: 32.4 t ADT: 19,500
STATE ROUTE 99
GoodOver: SOUTH DUTCHMAN CREEK
10-MER-099-1.60, Merced, CA
Built 2015 Load: 32.4 t ADT: 19,500
STATE ROUTE 99 SB
GoodOver: MARIPOSA CREEK
10-MER-099-9.35, Merced, CA
Built 2015 Load: 32.4 t ADT: 19,500
STATE ROUTE 99 NB
GoodOver: MARIPOSA CREEK
10-MER-099-9.35, Merced, CA
Built 2015 Load: 32.4 t ADT: 19,500
STATE ROUTE 165
GoodOver: SAN JOAQUIN RIVER
10-MER-165-25.60, Merced, CA
Built 2012 Load: 32.4 t ADT: 5,100
STATE ROUTE 99
GoodOver: ATHLONE DRAIN
10-MER-099-6.49, Merced, CA
Built 2015 Load: 32.4 t ADT: 39,000
STATE ROUTE 165
GoodOver: EAST SIDE CANAL
10-MER-165-28.14, Merced, CA
Built 2014 Load: 32.4 t ADT: 6,200
M STREET
GoodOver: BEAR CREEK
AT NORTH BEAR CREEK DR, Merced, CA
Built 1973 Load: 32.4 t ADT: 5,812
SOUTH AVENUE
GoodOver: UP RR TRACKS
0.2 MI EAST OF SR 99, Merced, CA
Built 2000 Load: 32.4 t ADT: 3,500
BRADBURY ROAD
GoodOver: UP RR TRACKS
0.2 MI EAST OF SR 99, Merced, CA
Built 2000 Load: 32.4 t ADT: 2,196
BADGER FLAT ROAD
GoodOver: CCID MAIN CANAL
0.3 MI S INGOMAR GRADE, Merced, CA
Built 1988 Load: 32.4 t ADT: 1,250
SOUTH ORCHARD DR
GoodOver: MILES CREEK
0.3 MI S MISSION AVENUE, Merced, CA
Built 1988 Load: 32.4 t ADT: 41
WHITE ROCK ROAD
GoodOver: DUTCHMAN CREEK
0.7 MI N BUCHANAN HLW RD, Merced, CA
Built 1978 Load: 32.4 t ADT: 83
KELLEY ROAD
GoodOver: MERCED SLOUGH
0.6 MI N RIVER RD, Merced, CA
Built 1989 Load: 32.4 t ADT: 2,730
THIRD AVENUE
GoodOver: EAST SIDE CANAL
0.3 MI W OF MCCULLAGH RD, Merced, CA
Built 1999 Load: 32.4 t ADT: 815
ARBOLEDA DRIVE
GoodOver: MILES CREEK
0.1 MI S MISSION AVENUE, Merced, CA
Built 1987 Load: 32.4 t ADT: 1,090
COTTONWOOD RD
GoodOver: OUTSIDE CANAL
1.0 MI E ORCHARD RD, Merced, CA
Built 1979 Load: 32.4 t ADT: 340
Showing 21,301-21,350 of 27,040 bridges
Related
Data sourced from the FHWA National Bridge Inventory (NBI), latest released cycle. See our methodology for details. Retrieved and formatted by PlainBridges.
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). Poor condition is an inspection-record category, not a closure or unsafe-to-cross designation. Consult the bridge owner for current status.
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.
Every figure on PlainBridge is rendered directly from federal source data, no number is typed in by an editor. This page draws directly on federal source data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.