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
INTERSTATE 5 NB
UnknownOver: CFNR & STATE ROUTE 33
10-SJ-005-6.41, San Joaquin, CA
Built 1971 ADT: 1,600
LINNE ROAD
UnknownOver: INTERSTATE ROUTE 5
10-SJ-005-7.48, San Joaquin, CA
Built 1971 ADT: 22,000
KASSON ROAD
UnknownOver: INTERSTATE ROUTE 5
10-SJ-005-11.06, San Joaquin, CA
Built 1971 ADT: 22,000
11 ST-OLD RTE 205
UnknownOver: INTERSTATE ROUTE 5
10-SJ-005-R11.79, San Joaquin, CA
Built 1971 ADT: 22,000
STATE ROUTE 4
UnknownOver: CROSSTOWN FWY VIADUCT
10-SJ-004-R16.62-STKN, San Joaquin, CA
Built 1975 ADT: 4,000
UP RR,BNSF,AMTRAK
UnknownOver: ST RTE 12 (KETTLEMAN LN)
10-SJ-012-17.26-LOD, San Joaquin, CA
Built 1973 ADT: 21,900
SR 120 WB
UnknownOver: GUTHMILLER ROAD
10-SJ-120-R1.33, San Joaquin, CA
Built 1980 ADT: 9,350
SR 120 EB
UnknownOver: GUTHMILLER ROAD
10-SJ-120-R1.33, San Joaquin, CA
Built 1980 ADT: 9,350
SR 120 WB
UnknownOver: MCKINLEY AVE
10-SJ-120-R2.29, San Joaquin, CA
Built 1995 ADT: 1,782
SR 120 EB
UnknownOver: MCKINLEY AVE
10-SJ-120-R2.29, San Joaquin, CA
Built 1980 ADT: 1,782
AIRPORT WAY
UnknownOver: SR 120
10-SJ-120-R3.32-MTCA, San Joaquin, CA
Built 1980 ADT: 68,000
UNION ROAD
UnknownOver: ST RTE 120
10-SJ-120-R4.31-MTCA, San Joaquin, CA
Built 1980 ADT: 68,000
MAIN ST
UnknownOver: SR 120
10-SJ-120-R5.31-MTCA, San Joaquin, CA
Built 1980 ADT: 72,000
SR 120 WB
UnknownOver: SPRECKLES ROAD
10-SJ-120-R6.13-MTCA, San Joaquin, CA
Built 1995 ADT: 1,165
SR 120 EB
UnknownOver: SPRECKLES ROAD
10-SJ-120-R6.13-MTCA, San Joaquin, CA
Built 1980 ADT: 1,165
SR 120 WB
UnknownOver: UP RR & MOFFAT BLVD
10-SJ-120-R6.33, San Joaquin, CA
Built 1995 ADT: 5,400
SR 120 EB
UnknownOver: UP RR & MOFFAT BLVD
10-SJ-120-R6.36, San Joaquin, CA
Built 1980 ADT: 5,400
E120-N99, N99-W120
UnknownOver: STATE ROUTE 99
10-SJ-120-6.86, San Joaquin, CA
Built 1980 ADT: 83,000
INTERSTATE 205
UnknownOver: AQUEDUCT SERVICE RD
10-SJ-205-L0.01, San Joaquin, CA
Built 1966 ADT: 1
SR 4 WB
UnknownOver: AIRPORT WAY
10-SJ-004-R17.56-STKN, San Joaquin, CA
Built 1988 ADT: 13,580
STATE ROUTE 4 EB
UnknownOver: AIRPORT WAY
10-SJ-004-R17.56-STKN, San Joaquin, CA
Built 1988 ADT: 13,580
CCT RR
UnknownOver: STATE ROUTE 4
10-SJ-004-R18.13-STKN, San Joaquin, CA
Built 1992 ADT: 91,000
MAIN STREET
UnknownOver: SR 4
10-SJ-004-R18.06-STKN, San Joaquin, CA
Built 1992 ADT: 91,000
E ST
UnknownOver: SR 4
10-SJ-004-R18.52-STKN, San Joaquin, CA
Built 1992 ADT: 85,000
FILBERT ST
UnknownOver: SR 4
10-SJ-004-R18.77-STKN, San Joaquin, CA
Built 1992 ADT: 85,000
ROUTE 4 WB
UnknownOver: WILSON WAY
10-SJ-004-R17.71-STKN, San Joaquin, CA
Built 1992 ADT: 19,450
STATE ROUTE 4 EB
UnknownOver: WILSON WAY
10-SJ-004-R17.71-STKN, San Joaquin, CA
Built 1992 ADT: 19,450
PEDESTRIAN WALKWAY
UnknownOver: STATE ROUTE 99 AND RAMPS
10-SJ-099-18.47, San Joaquin, CA
Built 1991 ADT: 96,000
MYRTLE STREET
UnknownOver: STATE ROUTE 99 & RAMPS
10-SJ-099-18.89, San Joaquin, CA
Built 1991 ADT: 83,000
N99-W4 CONNECTOR
UnknownOver: SR 99, E4-N99, N99-E26
10-SJ-099-18.57, San Joaquin, CA
Built 1993 ADT: 1,920
E4-N99 CONNECTOR
UnknownOver: STATE ROUTE 99
10-SJ-004-R19.40-STKN, San Joaquin, CA
Built 1993 ADT: 101,000
OFFRMP SB99-JACKTN
UnknownOver: ONRAMP JACKTONE RD-SB 99
10-SJ-099-2.33-RIP, San Joaquin, CA
Built 2001 ADT: 107,000
ONRAMP JACKTNE-99S
UnknownOver: STATE ROUTE 99
10-SJ-099-2.36-RIP, San Joaquin, CA
Built 2001 ADT: 113,000
STATE ROUTE 99
UnknownOver: ARCH ROAD
10-SJ-099-14.61-STKN, San Joaquin, CA
Built 2006 ADT: 13,600
JACK TONE ROAD
UnknownOver: UPRR,SB99 ONRP,KAMPS WY
10-SJ-099-2.32-RIP, San Joaquin, CA
Built 2001 ADT: 10,000
JACK TONE ROAD
UnknownOver: STATE ROUTE 99
10-SJ-099-2.34-RIP, San Joaquin, CA
Built 2001 ADT: 113,000
MOUNTAINHOUSE PKWY
UnknownOver: INTERSTATE ROUTE 205
10-SJ-205-1.36, San Joaquin, CA
Built 2007 ADT: 106,000
BIRD ROAD
UnknownOver: STATE ROUTE 132
10-SJ-132-2.25, San Joaquin, CA
Built 2014 ADT: 15,500
HAMMER LANE
UnknownOver: STATE ROUTE 99
10-SJ-099-22.92, San Joaquin, CA
Built 2007 ADT: 64,000
MARIPOSA ROAD
UnknownOver: SR 99
10-SJ-099-16.68-STKN, San Joaquin, CA
Built 2016 ADT: 73,000
BNSF RAILROAD
UnknownOver: HWY 99
10-SJ-099-17.38-STKN, San Joaquin, CA
Built 2016 ADT: 87,000
MAIN STREET
UnknownOver: STATE ROUTE 99
10-SJ-099-18.15-STKN, San Joaquin, CA
Built 2016 ADT: 96,000
DR MLK JR BLVD
UnknownOver: HWY 99
10-SJ-099-18.02-STKN, San Joaquin, CA
Built 2016 ADT: 87,000
GOLDEN GATE AVE
UnknownOver: HWY 99
10-SJ-099-17.41-STKN, San Joaquin, CA
Built 2016 ADT: 87,000
LATHROP ROAD
UnknownOver: STATE ROUTE 99
10-SJ-099-9.18-MTCA, San Joaquin, CA
Built 2015 ADT: 70,000
STATE ROUTE 99
UnknownOver: UP RR & FRENCH CAMP ROAD
10-SJ-099-11.47-MTCA, San Joaquin, CA
Built 2015 ADT: 2,000
SR 4-FARMINGTON RD
UnknownOver: STATE ROUTE 99
10-SJ-004-19.75, San Joaquin, CA
Built 2021 ADT: 94,000
BNSF RY & AMTRAK
UnknownOver: FRESNO AVENUE
0.25 MI N NAVY RD, San Joaquin, CA
Built 1972 ADT: 16,000
MAIN ST
UnknownOver: UP RR
0.07 MI S/W OF S.H. 99, San Joaquin, CA
Built 1967 ADT: 1,150
UP RR, BNSF,AMTRAK
UnknownOver: TURNER ROAD
0.2 MI EST CHURCH ST, San Joaquin, CA
Built 1962 ADT: 22,300
Showing 6,101-6,150 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.