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 15
UnknownOver: AIRPORT DRIVE
08-SBD-015-2.05-ONT, San Bernardino, CA
Built 1978 ADT: 12,300
N15-E&W10 CONNECTR
UnknownOver: AIRPORT DRIVE
08-SBD-015-2.05-ONT, San Bernardino, CA
Built 1978 ADT: 10,500
N15-W10 CONNECTOR
UnknownOver: I 10, I 15, & CONNS
08-SBD-015-2.37-ONT, San Bernardino, CA
Built 1975 ADT: 29,000
INTERSTATE 15 SB
UnknownOver: INTERSTATE 10
08-SBD-015-2.37-ONT, San Bernardino, CA
Built 1975 ADT: 250,000
INTERSTATE 15 NB
UnknownOver: INTERSTATE 10
08-SBD-015-2.37-ONT, San Bernardino, CA
Built 1975 ADT: 250,000
S15-E10 CONNECTOR
UnknownOver: I10,I15,CONNS,CHAN,OMPWY
08-SBD-015-2.41-ONT, San Bernardino, CA
Built 1975 ADT: 8,000
INTERSTATE 15
UnknownOver: ONTARIO MILLS PARKWAY
08-SBD-015-2.56-ONT, San Bernardino, CA
Built 1975 ADT: 15,900
INTERSTATE 15
UnknownOver: FOURTH STREET
08-SBD-015-3.05-RCUC, San Bernardino, CA
Built 1974 ADT: 36,000
E10-N15 CONNECTOR
UnknownOver: I 10, I 15, CONNS, CO RD
08-SBD-010-9.87-ONT, San Bernardino, CA
Built 1975 ADT: 25,000
W10-S15 CONNECTOR
UnknownOver: I 10, I 15, & CONNS
08-SBD-010-9.98-ONT, San Bernardino, CA
Built 1975 ADT: 197,000
INTERSTATE 15
UnknownOver: SIXTH STREET
08-SBD-015-3.81-RCUC, San Bernardino, CA
Built 1975 ADT: 3,800
INTERSTATE 15 SB
UnknownOver: ARROW ROUTE
08-SBD-015-4.61-RCUC, San Bernardino, CA
Built 1975 ADT: 6,500
INTERSTATE 15 NB
UnknownOver: ARROW ROUTE
08-SBD-015-4.61-RCUC, San Bernardino, CA
Built 1975 ADT: 6,500
INTERSTATE 15 SB
UnknownOver: FOOTHILL BLVD
08-SBD-015-5.28-RCUC, San Bernardino, CA
Built 1975 ADT: 34,000
INTERSTATE 15 NB
UnknownOver: FOOTHILL BLVD
08-SBD-015-5.28-RCUC, San Bernardino, CA
Built 1975 ADT: 34,000
E210-E10 CONNECTOR
UnknownOver: I-10, CONN RAMPS, COLTON
08-SBD-210-R33.04-RDL, San Bernardino, CA
Built 1992 ADT: 21,000
W10-W210 CONNECTOR
UnknownOver: TENNESSEE STREET
08-SBD-010-29.83-RDL, San Bernardino, CA
Built 1992 ADT: 6,600
I10-W210 CONNECTOR
UnknownOver: LUGONIA AVENUE
08-SBD-010-29.81-RDL, San Bernardino, CA
Built 1984 ADT: 12,500
EB 210-EB & WB 10
UnknownOver: LUGONIA AVENUE
08-SBD-210-R32.84-RDL, San Bernardino, CA
Built 1992 ADT: 12,000
STATE ROUTE 210 WB
UnknownOver: SAN BERNARDINO AVE
08-SBD-210-R32.34-RDL, San Bernardino, CA
Built 1984 ADT: 7,000
STATE ROUTE 210 EB
UnknownOver: SAN BERNARDINO AVE
08-SBD-210-R32.34-RDL, San Bernardino, CA
Built 1992 ADT: 7,000
E210-W10 CONNECTOR
UnknownOver: W10-ALABAMA ST OFF-RAMP
08-SBD-210-R33.10-RDL, San Bernardino, CA
Built 1992 ADT: 6,500
E10-W210 CONNECTOR
UnknownOver: INTERSTATE 10
08-SBD-010-29.70-RDL, San Bernardino, CA
Built 1992 ADT: 5,801
STATE ROUTE 210 WB
UnknownOver: CALIFORNIA STREET
08-SBD-210-20.96-SBD, San Bernardino, CA
Built 2007 ADT: 3,000
STATE ROUTE 210 EB
UnknownOver: CALIFORNIA STREET
08-SBD-210-20.96-SBD, San Bernardino, CA
Built 2007 ADT: 3,000
STATE ROUTE 210 WB
UnknownOver: HIGHLAND AVENUE
08-SBD-210-21.10-SBD, San Bernardino, CA
Built 2007 ADT: 22,400
STATE ROUTE 210 EB
UnknownOver: HIGHLAND AVENUE
08-SBD-210-21.10-SBD, San Bernardino, CA
Built 2007 ADT: 22,400
E210-S215 CONNECTR
UnknownOver: CAJON BLVD / BNSF RR
08-SBD-210-R21.72-SBD, San Bernardino, CA
Built 2012 ADT: 3,900
STATE ROUTE 210 WB
UnknownOver: CAJON BLVD & BNSF RY
08-SBD-210-R21.72-SBD, San Bernardino, CA
Built 1989 ADT: 3,900
STATE ROUTE 210 EB
UnknownOver: CAJON BLVD & BNSF RY
08-SBD-210-R21.72-SBD, San Bernardino, CA
Built 1989 ADT: 3,900
STATE ROUTE 210 WB
UnknownOver: INTERSTATE 215 & RAMPS
08-SBD-210-R21.84-SBD, San Bernardino, CA
Built 1989 ADT: 1,001
STATE ROUTE 210 EB
UnknownOver: INTERSTATE 215 & RAMPS
08-SBD-210-R21.84-SBD, San Bernardino, CA
Built 1989 ADT: 69,500
W210-N215 CONNECTR
UnknownOver: LITTLE MOUNTAIN DRIVE
08-SBD-210-R21.97-SBD, San Bernardino, CA
Built 1989 ADT: 7,000
STATE ROUTE 210 WB
UnknownOver: LITTLE MOUNTAIN DRIVE
08-SBD-210-R21.97-SBD, San Bernardino, CA
Built 1989 ADT: 7,000
STATE ROUTE 210 EB
UnknownOver: LITTLE MOUNTAIN DRIVE
08-SBD-210-R21.97-SBD, San Bernardino, CA
Built 1989 ADT: 7,000
MUSCUPIABE DR SB
UnknownOver: STATE ROUTE 210
08-SBD-210-R22.55-SBD, San Bernardino, CA
Built 1989 ADT: 106,000
MUSCUPIABE DR NB
UnknownOver: STATE ROUTE 210
08-SBD-210-R22.55-SBD, San Bernardino, CA
Built 1989 ADT: 106,000
H STREET
UnknownOver: STATE ROUTE 210
08-SBD-210-R22.94-SBD, San Bernardino, CA
Built 1989 ADT: 111,000
E210-N15 CONNECTOR
UnknownOver: W210-S15 CONNECTOR RAMP
08-SBD-210-11.31-RCUC, San Bernardino, CA
Built 1976 ADT: 3,001
W210-S15 CONN RAMP
UnknownOver: E210-N15 CONNECTOR RAMP
08-SBD-210-11.75-FNA, San Bernardino, CA
Built 2001 ADT: 3,001
STATE ROUTE 210 WB
UnknownOver: W210-S15 CONNECTOR RAMP
08-SBD-210-11.34-RCUC, San Bernardino, CA
Built 2000 ADT: 3,001
STATE ROUTE 210 EB
UnknownOver: W210-S15 CONNECTOR RAMP
08-SBD-210-11.34-RCUC, San Bernardino, CA
Built 2000 ADT: 3,302
STATE ROUTE 210
UnknownOver: INTERSTATE 15
08-SBD-210-11.46-RCUC, San Bernardino, CA
Built 2001 ADT: 148,000
W210-S15 CONNECTOR
UnknownOver: INTERSTATE 15
08-SBD-210-11.55-RCUC, San Bernardino, CA
Built 1999 ADT: 148,000
STATE ROUTE 210 WB
UnknownOver: E210-N15 CONNECTOR RAMP
08-SBD-210-11.63-FNA, San Bernardino, CA
Built 1999 ADT: 3,001
STATE ROUTE 210 EB
UnknownOver: E210-N15 CONNECTOR RAMP
08-SBD-210-11.63-FNA, San Bernardino, CA
Built 1999 ADT: 3,001
E210-N15 CONNECTOR
UnknownOver: INTERSTATE 15
08-SBD-210-11.42-RCUC, San Bernardino, CA
Built 1976 ADT: 148,000
S15-E210 CONNECTOR
UnknownOver: I15, I210 & CONNECTOR
08-SBD-015-8.30-RCUC, San Bernardino, CA
Built 2001 ADT: 4,501
INTERSTATE 15 SB
UnknownOver: CHERRY AVENUE
08-SBD-015-8.83-RCUC, San Bernardino, CA
Built 1976 ADT: 9,800
INTERSTATE 15 NB
UnknownOver: CHERRY AVENUE
08-SBD-015-8.83-RCUC, San Bernardino, CA
Built 1976 ADT: 9,800
Showing 4,801-4,850 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 |