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
FLETCHER DR
GoodOver: LOS ANGELES RIVER
0.1 M NE FWY 5, Los Angeles, CA
Built 1927 Load: 40.2 t ADT: 41,100
PALOMA ST
GoodOver: EATON WASH
0.4MI W/O SIERRA MADRE VL, Los Angeles, CA
Built 1958 Load: 40.2 t ADT: 816
BROADWAY
GoodOver: RUBIO WASH
400FT E/O SAN GAB BLVD, Los Angeles, CA
Built 1935 Load: 40.2 t ADT: 10,300
STATE ROUTE 140
GoodOver: COLD CANYON CREEK
10-MPA-140-48.63, Mariposa, CA
Built 1957 Load: 40.2 t ADT: 1,400
INTERSTATE 5 SB
GoodOver: QUINTO CREEK
10-MER-005-25.96, Merced, CA
Built 1967 Load: 40.2 t ADT: 15,500
INTERSTATE 5 NB
GoodOver: QUINTO CREEK
10-MER-005-25.96, Merced, CA
Built 1967 Load: 40.2 t ADT: 21,500
U.S. HIGHWAY 395
GoodOver: SOUTH FORK PIT RIVER
02-MOD-395-R19.64, Modoc, CA
Built 1971 Load: 40.2 t ADT: 2,400
PEACH TREE ROAD
GoodOver: SAN LORENZO CREEK
5.5 MI W SLACK CANYON RD, Monterey, CA
Built 1966 Load: 40.2 t ADT: 20
HENNESS ROAD
GoodOver: DRAINAGE DITCH (EAST)
WEST OF PROSSER DAM ROAD, Nevada, CA
Built 2006 Load: 40.2 t ADT: 1,000
INTERSTATE 5 SB
GoodOver: LAMBERT ROAD
03-SAC-005-4.65, Sacramento, CA
Built 1975 Load: 40.2 t ADT: 27,000
INTERSTATE 5 NB
GoodOver: LAMBERT ROAD
03-SAC-005-4.65, Sacramento, CA
Built 1975 Load: 40.2 t ADT: 27,000
INTERSTATE 15 SB
GoodOver: CADY WASH
08-SBD-015-R105.97, San Bernardino, CA
Built 1964 Load: 40.2 t ADT: 22,000
INTERSTATE 15 NB
GoodOver: CADY WASH
08-SBD-015-R105.97, San Bernardino, CA
Built 1964 Load: 40.2 t ADT: 22,000
STATE ROUTE 66
GoodOver: EAST BRANCH LYTLE CREEK
08-SBD-066-21.51-SBD, San Bernardino, CA
Built 1976 Load: 40.2 t ADT: 19,800
FREY CREEK BRIDGE
GoodOver: FREY CREEK
11-SD-076-27.38, San Diego, CA
Built 1957 Load: 40.2 t ADT: 10,800
LOWER SACRAMENTO R
GoodOver: MOKELUMNE RIVER
0.9 MI N TURNER RD, San Joaquin, CA
Built 1969 Load: 40.2 t ADT: 9,943
AUSTIN RD
GoodOver: N FK S LITTLEJOHNS CREEK
2.9 MI N FRENCH CAMP RD, San Joaquin, CA
Built 1954 Load: 40.2 t ADT: 1,033
STATE ROUTE 1
GoodOver: UP RR & AMTRAK
05-SLO-001-R12.60, San Luis Obispo, CA
Built 1964 Load: 40.2 t ADT: 7,400
US HIGHWAY 101 NB
GoodOver: MISSION CREEK
05-SB-101-13.93-SB, Santa Barbara, CA
Built 1992 Load: 40.2 t ADT: 54,500
QUITO ROAD
GoodOver: SAN TOMAS CREEK
AT AUSTIN WAY, Santa Clara, CA
Built 1993 Load: 40.2 t ADT: 5,780
INTERSTATE 5
GoodOver: WILLOW STREET
02-SIS-005-2.09-DMR, Siskiyou, CA
Built 1960 Load: 40.2 t ADT: 18,000
MISSION BLVD
GoodOver: AUSTIN CREEK
0.5 M NORTH OF HWY 12, Sonoma, CA
Built 1960 Load: 40.2 t ADT: 11,000
OLD 99W
GoodOver: FUNKS CREEK
AT LENAHAN RD, Colusa, CA
Built 1927 Load: 40.5 t ADT: 642
W HERNDON AVE
GoodOver: BNSF RY & AMTRAK
0.2 MI EAST OF POLK AVE, Fresno, CA
Built 1983 Load: 40.5 t ADT: 16,435
INTERSTATE 5
GoodOver: BOYD OVERFLOW
03-GLE-005-R11.98, Glenn, CA
Built 1966 Load: 40.5 t ADT: 12,750
INTERSTATE 5
GoodOver: BOYD OVERFLOW
03-GLE-005-R11.98, Glenn, CA
Built 1966 Load: 40.5 t ADT: 12,750
INTERSTATE 5
GoodOver: STONY CREEK
03-GLE-005-R26.88, Glenn, CA
Built 1966 Load: 40.5 t ADT: 12,300
E178-UNION AVE OFF
GoodOver: UP RR & ESPEE STREET
06-KER-178-R2.09-BKD, Kern, CA
Built 1967 Load: 40.5 t ADT: 4,850
STATE ROUTE 134 WB
GoodOver: MONTE BONITO DR
07-LA-134-R9.72-LA, Los Angeles, CA
Built 1955 Load: 40.5 t ADT: 110,000
N5-E210 CONNECTOR
GoodOver: METROLINK,UP RR,SAN FERN
07-LA-005-R43.83, Los Angeles, CA
Built 1975 Load: 40.5 t ADT: 5,100
HUNTINGTON DR
GoodOver: EATON WASH
0.5MI W/O ROSEMEAD BLVD, Los Angeles, CA
Built 1962 Load: 40.5 t ADT: 37,586
PARTHENIA ST
GoodOver: BULL CREEK
HAYVENHRST AV-PETIT AV, Los Angeles, CA
Built 1955 Load: 40.5 t ADT: 27,400
U.S. HIGHWAY 101
GoodOver: GGT, BELLAM, ANDERSEN
04-MRN-101-9.63-SRF, Marin, CA
Built 1958 Load: 40.5 t ADT: 172,000
INTERSTATE 5
GoodOver: CANAL ROAD
10-MER-005-19.65, Merced, CA
Built 1966 Load: 40.5 t ADT: 17,300
BENTON CROSSING RD
GoodOver: OWENS RIVER
6.5 MI E RTE 395 PM 20.5, Mono, CA
Built 1972 Load: 40.5 t ADT: 381
STATE ROUTE 156 WB
GoodOver: TEMBLADERO SLOUGH
05-MON-156-R0.90, Monterey, CA
Built 1966 Load: 40.5 t ADT: 14,925
STATE ROUTE 156 EB
GoodOver: TEMBLADERO SLOUGH
05-MON-156-R0.90, Monterey, CA
Built 1966 Load: 40.5 t ADT: 14,925
NORTH MAIN
GoodOver: LITTLE BEAR CREEK
0.2 MI N BORONDA RD, Monterey, CA
Built 1962 Load: 40.5 t ADT: 10,000
CHAPMAN AVENUE
GoodOver: SANTIAGO CREEK CHANNEL
0.1 MI E/O ROUTE 55 FWY, Orange, CA
Built 1961 Load: 40.5 t ADT: 54,900
INTERSTATE 10 EB
GoodOver: DETERMINATION DITCH
08-RIV-010-R90.98, Riverside, CA
Built 1967 Load: 40.5 t ADT: 23,000
INTERSTATE 40
GoodOver: BUZZARD WASH OVERFLOW
08-SBD-040-R138.51-NED, San Bernardino, CA
Built 1967 Load: 40.5 t ADT: 7,250
INTERSTATE 40
GoodOver: BUZZARD WASH OVERFLOW
08-SBD-040-R138.51-NED, San Bernardino, CA
Built 1967 Load: 40.5 t ADT: 7,250
INTERSTATE 15 NB
GoodOver: MWD PIPELINE
08-SBD-015-3.94-RCUC, San Bernardino, CA
Built 1975 Load: 40.5 t ADT: 98,000
S15-N5 CONNECTOR
GoodOver: CHOLLAS CREEK
11-SD-015-R0.02L-SD, San Diego, CA
Built 1963 Load: 40.5 t ADT: 8,000
STATE ROUTE 67 SB
GoodOver: LOS COCHES CREEK
11-SD-067-R4.78, San Diego, CA
Built 1970 Load: 40.5 t ADT: 25,500
STATE ROUTE 67 NB
GoodOver: LOS COCHES CREEK
11-SD-067-R4.78, San Diego, CA
Built 1970 Load: 40.5 t ADT: 25,500
WARD ROAD
GoodOver: SAN DIEGO RIVER
20FT N/O CAMINO DEL RIO N, San Diego, CA
Built 1985 Load: 40.5 t ADT: 9,160
US HIGHWAY 101 NB
GoodOver: SANTA YNEZ RIVER
05-SB-101-R56.64, Santa Barbara, CA
Built 1965 Load: 40.5 t ADT: 11,000
WATSONVILLE RD
GoodOver: LLAGAS CREEK
BOWDEN AVE, Santa Clara, CA
Built 1968 Load: 40.5 t ADT: 4,430
STATE ROUTE 96
GoodOver: LITTLE GRIDER CREEK
02-SIS-096-40.02, Siskiyou, CA
Built 1967 Load: 40.5 t ADT: 1,013
Showing 24,701-24,750 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 |