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
FairOver: BOULDER CREEK
02-SHA-005-R17.13-RDG, Shasta, CA
Built 1965 Load: 32.4 t ADT: 53,000
STATE ROUTE 299
FairOver: WEST FORK STILLWATER CRK
02-SHA-299-27.28, Shasta, CA
Built 1966 Load: 32.4 t ADT: 9,200
INTERSTATE 5
FairOver: SPRING BRANCH CREEK
02-SHA-005-R24.54, Shasta, CA
Built 1968 Load: 32.4 t ADT: 19,500
INTERSTATE 5 SB
FairOver: SACRAMENTO,UP RR,AMTRAK
02-SHA-005-R51.80, Shasta, CA
Built 1989 Load: 32.4 t ADT: 8,550
INTERSTATE 5 NB
FairOver: SACRAMENTO,UP RR,AMTRAK
02-SHA-005-R51.80, Shasta, CA
Built 1989 Load: 32.4 t ADT: 8,550
INTERSTATE 5 SB
FairOver: SACRAMENTO,UP RR,AMTRAK
02-SHA-005-R52.11, Shasta, CA
Built 1989 Load: 32.4 t ADT: 8,550
STATE ROUTE 299
FairOver: CEDAR CREEK
02-SHA-299-48.39, Shasta, CA
Built 2000 Load: 32.4 t ADT: 3,700
INTERSTATE 5
FairOver: COTTONWOOD CR,UP,AMTRAK
02-SHA-005-0.01, Shasta, CA
Built 1998 Load: 32.4 t ADT: 41,000
STATE ROUTE 44
FairOver: HAT CREEK
02-SHA-044-59.60, Shasta, CA
Built 2019 Load: 32.4 t ADT: 1,250
BUZZARD ROOST RD
FairOver: LITTLE COW CREEK
1 MI E OF OAK RUN RD, Shasta, CA
Built 1988 Load: 32.4 t ADT: 247
EAST FERN ROAD
FairOver: OLD COW CREEK
4.3 MI N OF WHITMORE RD, Shasta, CA
Built 2001 Load: 32.4 t ADT: 285
DERSCH ROAD
FairOver: STILLWATER CREEK
1.8 MI E/O AIRPORT RD, Shasta, CA
Built 1998 Load: 32.4 t ADT: 3,025
SILVER BRIDGE ROAD
FairOver: COW CREEK
0.1 MI S OLD RTE 44 DR, Shasta, CA
Built 1986 Load: 32.4 t ADT: 700
DERSCH RD
FairOver: BEAR CREEK
5.4 MI E DESCHUTES RD, Shasta, CA
Built 1963 Load: 32.4 t ADT: 1,320
MAIN ST
FairOver: COTTONWOOD CREEK
TEHAMA-SHASTA CO LINE, Shasta, CA
Built 2003 Load: 32.4 t ADT: 2,359
OLD 44 DR
FairOver: LITTLE COW CREEK
0.6 MI E. OF DESCHUTES RD, Shasta, CA
Built 1998 Load: 32.4 t ADT: 2,860
S BONNYVIEW RD EB
FairOver: SACRAMENTO RIVER
1.7 MI E/O SR 273, Shasta, CA
Built 1997 Load: 32.4 t ADT: 21,320
MCARTHUR RD
FairOver: DANA CREEK
0.4 MI E TED ELDER RD, Shasta, CA
Built 1973 Load: 32.4 t ADT: 475
OASIS ROAD
FairOver: BUCKEYE CREEK
1.1 MI WEST OF I-5, Shasta, CA
Built 1973 Load: 32.4 t ADT: 4,570
OLD ALTURAS RD
FairOver: SALMON CREEK
0.3 MI NE SALMON CREEK RD, Shasta, CA
Built 1980 Load: 32.4 t ADT: 4,130
PLACER ROAD
FairOver: CLEAR CREEK
3.0 MI E/O PLATINA RD, Shasta, CA
Built 1975 Load: 32.4 t ADT: 800
DRY CREEK RD
FairOver: DRY CREEK
1 MI N SR 299, Shasta, CA
Built 1987 Load: 32.4 t ADT: 2,769
SWEDE CR RD
FairOver: SWEDE CREEK
1.6 MI N OLD 44 DR, Shasta, CA
Built 1969 Load: 32.4 t ADT: 470
RED BLUFF ROAD
FairOver: MIDDLE CREEK
100 FT WEST OF SWASEY DR., Shasta, CA
Built 2000 Load: 32.4 t ADT: 330
S COW CR RD
FairOver: WILK GULCH
4.1 MI N S.R. 44, Shasta, CA
Built 1975 Load: 32.4 t ADT: 160
CRYSTAL CREEK RD
FairOver: WILLOW CREEK
AT SR 299, Shasta, CA
Built 1992 Load: 32.4 t ADT: 250
ISLAND ROAD
FairOver: FALL RIVER
0.5 MI N MCARTHUR RD, Shasta, CA
Built 1994 Load: 32.4 t ADT: 400
VALLECITO STREET
FairOver: SALT CREEK
0.2 MI W GRAND COULEE BL, Shasta, CA
Built 1960 Load: 32.4 t ADT: 300
BERNARD WAY
FairOver: EAST FORK STILLWATER CRK
200 FT EAST OF BEAR MT RD, Shasta, CA
Built 1975 Load: 32.4 t ADT: 800
BUCKEYE ST
FairOver: CHURN CREEK
0.2 MI N LAKE BL, Shasta, CA
Built 1950 Load: 32.4 t ADT: 500
BOULDER RD
FairOver: BOULDER CREEK
0.2 MI N OF LAKE BLVD, Shasta, CA
Built 1984 Load: 32.4 t ADT: 1,400
REDWOOD BLVD
FairOver: BOULDER CREEK
0.2 MI W & N S.R. 273, Shasta, CA
Built 1982 Load: 32.4 t ADT: 2,536
BENTON DRIVE
FairOver: SACRAMENTO RV-LK REDDING
0.1 MI N/O RIVERSIDE DR, Shasta, CA
Built 1998 Load: 32.4 t ADT: 4,000
MILLVILLE PLAIN RD
FairOver: DRY CREEK
0.1 MI N OF DERSCH ROAD, Shasta, CA
Built 1998 Load: 32.4 t ADT: 617
PINE GROVE AVENUE
FairOver: SALT CREEK
0.2 MI W I-5., Shasta, CA
Built 2000 Load: 32.4 t ADT: 3,630
KNIGHTON ROAD
FairOver: CHURN CREEK
1.1 MI EAST OF I5, Shasta, CA
Built 2002 Load: 32.4 t ADT: 3,850
KNIGHTON ROAD
FairOver: CLOVER CREEK
1.5 MI E OF I5, Shasta, CA
Built 2002 Load: 32.4 t ADT: 4,900
CHURN CREEK RD
FairOver: BOULDER CREEK
0.9 MI SOUTH OF SR 299, Shasta, CA
Built 1998 Load: 32.4 t ADT: 2,500
OLD 44 ROAD
FairOver: STILLWATER CREEK
0.5 MI E OF OREGON TRAIL, Shasta, CA
Built 2004 Load: 32.4 t ADT: 980
FOSTER RD
FairOver: MARK CREEK
2.7 MI SW GAS POINT RD, Shasta, CA
Built 2004 Load: 32.4 t ADT: 30
BLUE JAY LANE
FairOver: ANDERSON CREEK
0.2 MI E BALLS FERRY RD, Shasta, CA
Built 2006 Load: 32.4 t ADT: 375
AIRPORT ROAD
FairOver: SACRAMENTO RIVER
0.5 MI S OF DERSCH ROAD, Shasta, CA
Built 2010 Load: 32.4 t ADT: 9,460
SMIT BOTTOM RD
FairOver: A.C.I.D. CANAL
0.2 MI SOUTH OF FIRST ST, Shasta, CA
Built 2015 Load: 32.4 t ADT: 320
MT LASSEN WOODS DR
FairOver: MILLSEAT CREEK
0.2 MI N OF STATE RTE 44, Shasta, CA
Built 2007 Load: 32.4 t ADT: 20
MIDDLE BRIDGE ROAD
FairOver: SOUTH COW CREEK
LATOUR STATE FOREST, Shasta, CA
Built 1986 Load: 32.4 t ADT: 10
STATE ROUTE 49
FairOver: HOWARD CREEK
03-SIE-049-R34.26, Sierra, CA
Built 1964 Load: 32.4 t ADT: 800
STATE ROUTE 89
FairOver: FLETCHER CREEK
03-SIE-089-22.70, Sierra, CA
Built 1969 Load: 32.4 t ADT: 1,020
GOODYEARS CREEK RD
FairOver: GOODYEARS CREEK
0.6 MI NORTH OF ROUTE 49, Sierra, CA
Built 2007 Load: 32.4 t ADT: 50
MAIN ST CR S500
FairOver: DOWNIE RIVER
IN DOWNIEVILLE, Sierra, CA
Built 1986 Load: 32.4 t ADT: 150
GOLD LAKE ROAD
FairOver: HOWARD CREEK
JUST NORTH OF SR 49, Sierra, CA
Built 2008 Load: 32.4 t ADT: 830
Showing 14,301-14,350 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.