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
PRUNEDALE OC
UnknownOver: S101-W156 CONNECTOR RAMP
05-MON-156-T5.10, Monterey, CA
Built 2005 ADT: 10,000
STATE ROUTE 1
UnknownOver: SALINAS ROAD
05-MON-001-T101.05, Monterey, CA
Built 2012 ADT: 30,500
US HIGHWAY 101
UnknownOver: ESPINOSA ROAD
05-MON-101-R91.87, Monterey, CA
Built 2014 ADT: 7,500
US HIGHWAY 101
UnknownOver: ESPINOSA ROAD
05-MON-101-R91.87, Monterey, CA
Built 2013 ADT: 7,500
SALA ROAD
UnknownOver: US HIGHWAY 101
05-MON-101-92.19, Monterey, CA
Built 2013 ADT: 61,700
PRUNEDALE SOUTH RD
UnknownOver: US HIGHWAY 101
05-MON-101-94.07, Monterey, CA
Built 2013 ADT: 61,700
CRAZY HORSE CANYON
UnknownOver: U.S. HIGHWAY 101
05-MON-101-98.37, Monterey, CA
Built 2014 ADT: 55,500
HILLSIDE
UnknownOver: STATE ROUTE 1
05-MON-001-21.35, Monterey, CA
Built 2013 ADT: 2,000
CA AM WATER CO
UnknownOver: SR 68, N1-E68, W68-N1
05-MON-068-R4.05-MON, Monterey, CA
Built 2019 ADT: 26,000
UP RR & AMTRAK
UnknownOver: ABBOTT STREET
NR INTERSECTION HWY 101, Monterey, CA
Built 1929 ADT: 13,037
PEDESTRIAN WALKWAY
UnknownOver: CALLE DE ADOBE
0.25 MI E OF BORONDA RD, Monterey, CA
Built 1968 ADT: 1,000
UP RR & AMTRAK
UnknownOver: EAST ALISAL STREET
NEAR FRONT ST, Monterey, CA
Built 1965 ADT: 2,000
PEDESTRIAN WALKWAY
UnknownOver: SAN PABLO AVE
0.2 MI E YOSEMITE ST, Monterey, CA
Built 1960 ADT: 3,495
PEDESTRIAN WALKWAY
UnknownOver: PACIFIC STREET
0.2 MI N OF SCOTT ST, Monterey, CA
Built 1980 ADT: 11,000
E MARKET ST RAMP
UnknownOver: EAST FRONT STREET
FRONT ST, Monterey, CA
Built 1979 ADT: 26,400
UP RR & AMTRAK
UnknownOver: EAST MARKET STREET
NEAR FRONT ST, Monterey, CA
Built 1979 ADT: 26,400
PEDESTRIAN WALKWAY
UnknownOver: DEL MONTE AVE
AT CALLE PRINCIPAL, Monterey, CA
Built 1985 ADT: 5,000
UP RR & AMTRAK
UnknownOver: FRONT ST
0.2 MI SW OF EAST ST, Monterey, CA
Built 1936 ADT: 5,300
STATE ROUTE 29 SB
UnknownOver: STATE RTE 121/IMOLA AVE
04-NAP-029-R10.38-NAP, Napa, CA
Built 1961 ADT: 27,000
STATE ROUTE 29 NB
UnknownOver: STATE RTE 121/IMOLA AVE
04-NAP-029-R10.38-NAP, Napa, CA
Built 1961 ADT: 27,000
OLD SONOMA ROAD
UnknownOver: STATE ROUTE 29
04-NAP-029-10.70-NAP, Napa, CA
Built 1961 ADT: 59,000
FIRST STREET
UnknownOver: STATE ROUTE 29
04-NAP-029-11.55-NAP, Napa, CA
Built 1964 ADT: 67,000
LINCOLN AVENUE
UnknownOver: STATE ROUTE 29
04-NAP-029-12.04-NAP, Napa, CA
Built 1967 ADT: 59,000
TRANCAS ST-REDWOOD
UnknownOver: STATE ROUTE 29
04-NAP-029-13.00-NAP, Napa, CA
Built 2003 ADT: 43,000
NAPA VALLEY RR
UnknownOver: STATE ROUTE 29
04-NAP-029-12.91-NAP, Napa, CA
Built 2004 ADT: 59,000
PEDESTRIAN WALKWAY
UnknownOver: STATE ROUTE 29
04-NAP-029-12.90-NAP, Napa, CA
Built 2004 ADT: 59,000
INTERSTATE 80 WB
UnknownOver: SR 20,UP RR,BNSF,AMTRAK
03-NEV-080-R59.44, Nevada, CA
Built 1963 ADT: 2,600
INTERSTATE 80 EB
UnknownOver: SR 20,UP RR,BNSF,AMTRAK
03-NEV-080-R59.44, Nevada, CA
Built 1963 ADT: 2,600
INTERSTATE 80
UnknownOver: STATE ROUTE 89
03-NEV-080-14.16, Nevada, CA
Built 1991 ADT: 4,900
INTERSTATE 80
UnknownOver: DONNER PASS ROAD
03-NEV-080-14.97-TRK, Nevada, CA
Built 1991 ADT: 1,500
STATE ROUTE 89
UnknownOver: INTERSTATE 80
03-NEV-089-R0.53-TRK, Nevada, CA
Built 1995 ADT: 28,000
DONNER PASS ROAD
UnknownOver: INTERSTATE 80
03-NEV-080-13.22, Nevada, CA
Built 2001 ADT: 31,000
BRUNSWICK ROAD
UnknownOver: STATE ROUTE 20
03-NEV-020-R14.80, Nevada, CA
Built 1969 ADT: 33,500
STATE ROUTE 20
UnknownOver: STATE ROUTE 49
03-NEV-020-R12.24-GVY, Nevada, CA
Built 1969 ADT: 31,000
STATE ROUTE 20
UnknownOver: SR 174 (COLFAX),AUBURN
03-NEV-020-R12.85-GVY, Nevada, CA
Built 1970 ADT: 12,000
STATE ROUTE 20
UnknownOver: BANK STREET
03-NEV-020-R13.04-GVY, Nevada, CA
Built 1969 ADT: 4,500
STATE ROUTE 20
UnknownOver: BENNETT STREET
03-NEV-020-R13.11-GVY, Nevada, CA
Built 1969 ADT: 4,500
SACRAMENTO ST
UnknownOver: STATE ROUTE 20
03-NEV-020-R16.74-NEVC, Nevada, CA
Built 1967 ADT: 16,800
BROAD ST
UnknownOver: STATE ROUTE 20
03-NEV-020-R16.99-NEVC, Nevada, CA
Built 1967 ADT: 16,800
WASHINGTON ST
UnknownOver: STATE ROUTE 20
03-NEV-020-R17.18-NEVC, Nevada, CA
Built 1967 ADT: 16,800
INTERSTATE 80 WB
UnknownOver: UP,BNSF,AMTRAK,TRUCKEE,
03-NEV-080-22.41, Nevada, CA
Built 1989 ADT: 500
INTERSTATE 80 EB
UnknownOver: UP,BNSF,AMTRAK,TRUCKEE,
03-NEV-080-22.41, Nevada, CA
Built 1989 ADT: 500
INTERSTATE 80
UnknownOver: HINTON ROAD
03-NEV-080-23.57, Nevada, CA
Built 2004 ADT: 500
INTERSTATE 80
UnknownOver: TRUCKEE RIVER
03-NEV-080-27.29, Nevada, CA
Built 2004 ADT: 500
LAKE VALLEY ROAD
UnknownOver: INTERSTATE 80
03-NEV-080-R58.84, Nevada, CA
Built 1963 ADT: 11,750
DONNER PASS RD
UnknownOver: INTERSTATE 80
03-NEV-080-R2.48L, Nevada, CA
Built 1962 ADT: 24,800
BANNER LAVA CAP RD
UnknownOver: STATE ROUTE 20
03-NEV-020-R15.41, Nevada, CA
Built 1967 ADT: 33,500
STATE ROUTE 20
UnknownOver: IDAHO-MARYLAND ROAD
03-NEV-020-R13.61-GVY, Nevada, CA
Built 1969 ADT: 11,000
IDAHO-MARYLAND-E20
UnknownOver: IDAHO-MARYLAND ROAD
03-NEV-020-R13.61-GVY, Nevada, CA
Built 1969 ADT: 11,000
S. AUBURN STREET
UnknownOver: STATE ROUTE 49
03-NEV-049-R13.66-GVY, Nevada, CA
Built 1969 ADT: 31,000
Showing 3,451-3,500 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 |