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
STATE ROUTE 99 SB
FairOver: DEADMAN CREEK
10-MER-099-5.22, Merced, CA
Built 2015 Load: 32.4 t ADT: 19,500
STATE ROUTE 99 NB
FairOver: DEADMAN CREEK
10-MER-099-5.22, Merced, CA
Built 2015 Load: 32.4 t ADT: 19,500
STATE ROUTE 99 SB
FairOver: DUCK SLOUGH
10-MER-099-9.43, Merced, CA
Built 2015 Load: 32.4 t ADT: 19,500
STATE ROUTE 99 NB
FairOver: DUCK SLOUGH
10-MER-099-9.43, Merced, CA
Built 2015 Load: 32.4 t ADT: 19,500
STATE ROUTE 99 SB
FairOver: DUCK SLOUGH OVERFLOW
10-MER-099-9.86, Merced, CA
Built 2015 Load: 32.4 t ADT: 19,500
STATE ROUTE 99 NB
FairOver: DUCK SLOUGH OVERFLOW
10-MER-099-9.86, Merced, CA
Built 2015 Load: 32.4 t ADT: 19,500
STATE ROUTE 59
FairOver: MERCED RIVER
10-MER-059-27.15, Merced, CA
Built 2009 Load: 32.4 t ADT: 1,425
STATE ROUTE 99 SB
FairOver: CANAL CREEK
10-MER-099-20.17, Merced, CA
Built 2015 Load: 32.4 t ADT: 19,500
STATE ROUTE 99 NB
FairOver: CANAL CREEK
10-MER-099-20.19, Merced, CA
Built 2015 Load: 32.4 t ADT: 19,500
ST RTE 99NB ONRAMP
FairOver: CANAL CREEK
10-MER-099-20.21, Merced, CA
Built 2015 Load: 32.4 t ADT: 10,000
RIVER ROAD
FairOver: SAN JOAQUIN RIVER OVERFL
0.35 MI E STANISLAUS CO, Merced, CA
Built 1986 Load: 32.4 t ADT: 4,660
SHANKS ROAD
FairOver: UP RR
AT SR 99 IN DELHI, Merced, CA
Built 1980 Load: 32.4 t ADT: 491
INGOMAR GRADE
FairOver: LOS BANOS CREEK
0.15 MI NW BADGER FLAT R, Merced, CA
Built 1988 Load: 32.4 t ADT: 4,890
HENRY MILLER AVE
FairOver: CCID MAIN CANAL
2.0 MI E I-5, Merced, CA
Built 1996 Load: 32.4 t ADT: 2,835
HENRY MILLER AVE
FairOver: SAN JOAQUIN-KNG RV CANAL
0.3 MI EAST OF I-5, Merced, CA
Built 1996 Load: 32.4 t ADT: 3,020
DICKENSON FERRY RD
FairOver: EL CAPITAN CANAL
AT THORNTON ROAD, Merced, CA
Built 1979 Load: 32.4 t ADT: 1,200
PLAINSBURG ROAD
FairOver: DEADMAN CREEK
1.2 MI S LE GRAND RD, Merced, CA
Built 1955 Load: 32.4 t ADT: 1,092
MCKEE ROAD
FairOver: BEAR CREEK
0.5 MI S OF E. OLIVE, Merced, CA
Built 1988 Load: 32.4 t ADT: 5,391
SHAFFER ROAD
FairOver: ESCALADIAN CANAL
0.3 MI S SHAW AVE, Merced, CA
Built 1991 Load: 32.4 t ADT: 900
CORTEZ ROAD
FairOver: HIGH LINE CANAL
SOUTH AVE, Merced, CA
Built 1940 Load: 32.4 t ADT: 727
FRANKLIN ROAD
FairOver: BLACK RASCAL CREEK
0.7 MI N OF ROUTE 140, Merced, CA
Built 1989 Load: 32.4 t ADT: 1,761
ARBOLEDA DRIVE
FairOver: BEAR CREEK
SOUTH BEAR CREEK DRIVE, Merced, CA
Built 1987 Load: 32.4 t ADT: 4,312
GUN CLUB RD
FairOver: CCID MAIN CANAL
0.3 MI E OF SR 33, Merced, CA
Built 1985 Load: 32.4 t ADT: 950
BRITTO ROAD
FairOver: ARROYO CANAL
0.5 MI S LAGUNA RD, Merced, CA
Built 1986 Load: 32.4 t ADT: 170
REILLY ROAD
FairOver: OWENS CREEK
0.3 MI E TYLER ROAD, Merced, CA
Built 1985 Load: 32.4 t ADT: 170
CHARLESTON ROAD
FairOver: OUTSIDE CANAL
0.5 MI E OF S.H. 165, Merced, CA
Built 1985 Load: 32.4 t ADT: 120
VAN CLIEF ROAD
FairOver: EAST SIDE CANAL
0.25 MI. N. OF THIRD AVE., Merced, CA
Built 2001 Load: 32.4 t ADT: 300
FRANKLIN ROAD
FairOver: BEAR CREEK
0.6 MI N OF ROUTE 140, Merced, CA
Built 1989 Load: 32.4 t ADT: 1,761
BUCHANAN HOLLOW RD
FairOver: DUTCHMAN CREEK #2
1.1 MI E WHITE ROCK ROAD, Merced, CA
Built 1930 Load: 32.4 t ADT: 147
WHITE ROCK ROAD
FairOver: DEADMAN CREEK
1.5 MI N BUCHANAN HLW RD, Merced, CA
Built 1910 Load: 32.4 t ADT: 85
PALM AVENUE
FairOver: ARROYO CANAL
BARCELLOS ROAD, Merced, CA
Built 1976 Load: 32.4 t ADT: 1,610
ARROYA AVENUE
FairOver: ARROYO CANAL
0.7 MI S OF S.R. 152, Merced, CA
Built 1980 Load: 32.4 t ADT: 170
DICKENSON FERRY RD
FairOver: DEANE CANAL
GURR ROAD, Merced, CA
Built 2001 Load: 32.4 t ADT: 800
BLISS ROAD
FairOver: DUTCHMAN CREEK
0.2 MI S SANDY MUSH ROAD, Merced, CA
Built 1980 Load: 32.4 t ADT: 100
HAMMATT AVENUE
FairOver: UP RR TRACKS
0.2 MI SOUTH OF SR 99, Merced, CA
Built 1997 Load: 32.4 t ADT: 2,334
OAK AVENUE
FairOver: BEAR CREEK
0.6 MI E QUINLEY AVENUE, Merced, CA
Built 1993 Load: 32.4 t ADT: 100
LONE TREE ROAD
FairOver: MARIPOSA CREEK
1.5 MI N SANDYMUSH ROAD, Merced, CA
Built 1993 Load: 32.4 t ADT: 75
SULLIVAN ROAD
FairOver: CCID MAIN CANAL
50 FT E OF SR140 & SR33, Merced, CA
Built 1996 Load: 32.4 t ADT: 1,101
OAKDALE ROAD
FairOver: MERCED RIVER
0.9 MI NW OF SHAFFER RD, Merced, CA
Built 2003 Load: 32.4 t ADT: 667
COZZI AVENUE
FairOver: ARROYO CANAL
1.0 MI S OF SR 152, Merced, CA
Built 1998 Load: 32.4 t ADT: 160
ALMOND AVENUE
FairOver: LIVINGSTON CANAL
VINE AVENUE, Merced, CA
Built 2007 Load: 32.4 t ADT: 1,130
MARINO WAY
FairOver: DUCK SLOUGH
0.1 MI NW OF MARIPOSA WY, Merced, CA
Built 2015 Load: 32.4 t ADT: 1,000
MARINO WAY
FairOver: DUCK SLOUGH OVERFLOW
0.5 MI NW OF MARIPOSA WY, Merced, CA
Built 2015 Load: 32.4 t ADT: 1,000
ALFALFA AVE
FairOver: MILES CREEK
0.7 MI S OF EAST.MISSION, Merced, CA
Built 2007 Load: 32.4 t ADT: 889
COFFEE (ALFALFA)
FairOver: MILES CREEK OVERFLOW
0.5 MI S OF EAST.MISSION, Merced, CA
Built 2007 Load: 32.4 t ADT: 899
COFFEE ST
FairOver: MILES CREEK OVERFLOW
0.1 MI S OF EAST.MISSION, Merced, CA
Built 2007 Load: 32.4 t ADT: 899
MISSION AVENUE
FairOver: OLD ST RTE 99 & UP RR
0.3 MI NW/O S COFFEE ST, Merced, CA
Built 2006 Load: 32.4 t ADT: 800
BUENA VISTA DRIVE
FairOver: FAHRENS CREEK
0.4 MI WEST OF R STREET, Merced, CA
Built 1991 Load: 32.4 t ADT: 5,812
CO RD 133C
FairOver: WILLOW CREEK
0.1 MI S OF CR 9, Modoc, CA
Built 1987 Load: 32.4 t ADT: 20
CO RD 60
FairOver: EASTSIDE CANAL
2.1 MI W OF CR 189, Modoc, CA
Built 2004 Load: 32.4 t ADT: 200
Showing 13,001-13,050 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.