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
LASSEN LANE
UnknownOver: INTERSTATE 5
02-SIS-005-R11.17-MSHA, Siskiyou, CA
Built 1964 ADT: 20,000
S5-N MT SHASTA OFF
UnknownOver: INTERSTATE 5
02-SIS-005-R12.06, Siskiyou, CA
Built 1964 ADT: 20,600
SISKIYOU AVE
UnknownOver: INTERSTATE 5
02-SIS-005-2.92-DMR, Siskiyou, CA
Built 1966 ADT: 2,000
AZALEA ROAD
UnknownOver: INTERSTATE 5
02-SIS-005-R8.29, Siskiyou, CA
Built 1964 ADT: 20,700
S5-S89 & N89-S5 CN
UnknownOver: INTERSTATE 5
02-SIS-089-R34.60, Siskiyou, CA
Built 1964 ADT: 19,300
S MT SHASTA-S5 ON
UnknownOver: INTERSTATE 5
02-SIS-005-R8.79, Siskiyou, CA
Built 1964 ADT: 19,300
I 5 SB
UnknownOver: E96-N5 CON,KLAMATH RIVER
02-SIS-005-R58.18L, Siskiyou, CA
Built 1969 ADT: 255
I 5 NB
UnknownOver: E96-N5 CON,KLAMATH RIVER
02-SIS-005-R58.18R, Siskiyou, CA
Built 1969 ADT: 255
INTERSTATE 5
UnknownOver: STEWART SPRINGS ROAD
02-SIS-005-R23.00, Siskiyou, CA
Built 1969 ADT: 100
INTERSTATE 5
UnknownOver: STEWART SPRINGS ROAD
02-SIS-005-R23.00, Siskiyou, CA
Built 1969 ADT: 100
LOUIE ROAD
UnknownOver: INTERSTATE 5
02-SIS-005-R31.18, Siskiyou, CA
Built 1969 ADT: 14,800
INTERSTATE 5 SB
UnknownOver: OBERLIN ROAD
02-SIS-005-R46.49-YRE, Siskiyou, CA
Built 1970 ADT: 4,000
INTERSTATE 5 NB
UnknownOver: OBERLIN ROAD
02-SIS-005-R46.49-YRE, Siskiyou, CA
Built 1970 ADT: 4,000
99-97 CUTOFF
UnknownOver: INTERSTATE 5
02-SIS-005-R38.21, Siskiyou, CA
Built 1969 ADT: 15,700
WALTERS ROAD
UnknownOver: INTERSTATE 5
02-SIS-005-R44.31, Siskiyou, CA
Built 1970 ADT: 17,100
INTERSTATE 5 SB
UnknownOver: STATE ROUTE 3
02-SIS-005-R48.23-YRE, Siskiyou, CA
Built 1970 ADT: 3,450
INTERSTATE 5 NB
UnknownOver: STATE ROUTE 3
02-SIS-005-R48.23-YRE, Siskiyou, CA
Built 1970 ADT: 3,450
ABRAMS LAKE ROAD
UnknownOver: INTERSTATE 5 SB
02-SIS-005-R13.18L, Siskiyou, CA
Built 1973 ADT: 24,600
ABRAMS LAKE ROAD
UnknownOver: INTERSTATE 5 NB
02-SIS-005-R13.18R, Siskiyou, CA
Built 1973 ADT: 22,500
INTERSTATE 5
UnknownOver: KILLGORE HILLS ROAD
02-SIS-005-R42.51, Siskiyou, CA
Built 1970 ADT: 2,530
INTERSTATE 5
UnknownOver: KILLGORE HILLS ROAD
02-SIS-005-R42.51, Siskiyou, CA
Built 1970 ADT: 2,530
SLOUGH ROAD
UnknownOver: INTERSTATE 5
02-SIS-005-R34.96, Siskiyou, CA
Built 1969 ADT: 15,700
INTERSTATE 5 SB
UnknownOver: MINER STREET
02-SIS-005-R47.56-YRE, Siskiyou, CA
Built 1970 ADT: 2,640
ROUTE 5
UnknownOver: MINER STREET
02-SIS-005-R47.56-YRE, Siskiyou, CA
Built 1970 ADT: 2,640
INTERSTATE 5 SB
UnknownOver: STATE ROUTE 265
02-SIS-005-R19.85-WEED, Siskiyou, CA
Built 1973 ADT: 2,000
INTERSTATE 5 NB
UnknownOver: STATE ROUTE 265
02-SIS-005-R19.85-WEED, Siskiyou, CA
Built 1973 ADT: 1,800
INTERSTATE 5 SB
UnknownOver: STATE ROUTE 97
02-SIS-005-R19.05-WEED, Siskiyou, CA
Built 1973 ADT: 12,100
INTERSTATE 5 NB
UnknownOver: STATE ROUTE 97
02-SIS-005-R19.05-WEED, Siskiyou, CA
Built 1973 ADT: 12,100
DITCH CREEK ROAD
UnknownOver: INTERSTATE 5
02-SIS-005-R62.92, Siskiyou, CA
Built 1974 ADT: 15,300
BAILEY HILL ROAD
UnknownOver: INTERSTATE 5
02-SIS-005-R65.52R, Siskiyou, CA
Built 1974 ADT: 15,300
INTERSTATE 5 SB
UnknownOver: HENLEY WAY
02-SIS-005-R61.55, Siskiyou, CA
Built 1974 ADT: 1,000
INTERSTATE 5 NB
UnknownOver: HENLEY WAY
02-SIS-005-R61.55, Siskiyou, CA
Built 1974 ADT: 1,020
HILT ROAD
UnknownOver: INTERSTATE 5
02-SIS-005-R68.33, Siskiyou, CA
Built 2017 ADT: 15,100
ALAMO DRIVE
UnknownOver: INTERSTATE 80 & RAMP
04-SOL-080-R25.31-VAC, Solano, CA
Built 1963 ADT: 141,000
INTERSTATE 80 WB
UnknownOver: DAVIS STREET
04-SOL-080-R26.00-VAC, Solano, CA
Built 1963 ADT: 11,000
INTERSTATE 80 EB
UnknownOver: DAVIS STREET
04-SOL-080-R26.00-VAC, Solano, CA
Built 1963 ADT: 11,000
UNION PACIFIC RR
UnknownOver: INTERSTATE 80
04-SOL-080-R11.92-FRFD, Solano, CA
Built 1969 ADT: 115,000
INTERSTATE 80 WB
UnknownOver: MASON STREET
04-SOL-080-R26.46-VAC, Solano, CA
Built 1952 ADT: 32,607
INTERSTATE 80 EB
UnknownOver: MASON STREET
04-SOL-080-R26.46-VAC, Solano, CA
Built 1952 ADT: 32,607
WB TRAVIS BLVD
UnknownOver: INTERSTATE 80 & RAMPS
04-SOL-080-17.93-FRFD, Solano, CA
Built 1983 ADT: 177,000
EB TRAVIS BLVD
UnknownOver: INTERSTATE 80 & RAMPS
04-SOL-080-17.92-FRFD, Solano, CA
Built 1963 ADT: 177,000
STATE ROUTE 37
UnknownOver: NAPA RIVER AND WILSON AV
04-SOL-037-R7.39-VAL, Solano, CA
Built 1963 ADT: 9,723
MAGAZINE STREET
UnknownOver: INTERSTATE 80 & RAMPS
04-SOL-080-1.78-VAL, Solano, CA
Built 1956 ADT: 145,000
INTERSTATE 80
UnknownOver: E37 - COLUMBUS PARKWAY
04-SOL-080-5.63-VAL, Solano, CA
Built 1944 ADT: 9,000
BENICIA ROAD
UnknownOver: INTERSTATE 80 & RAMPS
04-SOL-080-2.44, Solano, CA
Built 1958 ADT: 18,100
SPRINGS ROAD
UnknownOver: INTERSTATE 80 & RAMPS
04-SOL-080-3.23-VAL, Solano, CA
Built 1958 ADT: 145,000
STATE ROUTE 37 WB
UnknownOver: SAGE ST
04-SOL-037-R11.22-VAL, Solano, CA
Built 1979 ADT: 3,770
STATE ROUTE 37 EB
UnknownOver: SAGE ST
04-SOL-037-R11.22-VAL, Solano, CA
Built 1979 ADT: 3,770
AIR BASE PARKWAY
UnknownOver: INTERSTATE 80 & RAMP
04-SOL-080-19.18-FRFD, Solano, CA
Built 1989 ADT: 177,000
TENNESSEE STREET
UnknownOver: INTERSTATE 80 & RAMPS
04-SOL-080-3.49-VAL, Solano, CA
Built 1958 ADT: 11,350
Showing 7,051-7,100 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.