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
WILSON ST
UnknownOver: STATE ROUTE 55
12-ORA-055-R3.20-CMS, Orange, CA
Built 1990 ADT: 142,000
DEL MAR AVE
UnknownOver: STATE ROUTE 55
12-ORA-055-R3.78-CMS, Orange, CA
Built 1990 ADT: 142,000
MESA DRIVE
UnknownOver: STATE ROUTE 55
12-ORA-055-R4.02-CMS, Orange, CA
Built 1990 ADT: 142,000
AVENIDA VISTA HERM
UnknownOver: INTERSTATE 5
12-ORA-005-4.08-SCLE, Orange, CA
Built 1981 ADT: 220,000
AVENIDA VISTA HERM
UnknownOver: INTERSTATE 5
12-ORA-005-4.10-SCLE, Orange, CA
Built 2004 ADT: 220,000
VON KARMAN AVE
UnknownOver: INTERSTATE 405
12-ORA-405-7.40-IRVN, Orange, CA
Built 1979 ADT: 266,000
BROADWAY
UnknownOver: INTERSTATE 5
12-ORA-005-33.31-SA, Orange, CA
Built 1985 ADT: 300,000
S1-N5 CONNECTOR
UnknownOver: SR 1 CAMINO LAS RAMBLAS
12-ORA-001-R0.13-SJCP, Orange, CA
Built 1973 ADT: 37,000
ALTON PARKWAY
UnknownOver: INTERSTATE 5
12-ORA-005-22.21-IRVN, Orange, CA
Built 1984 ADT: 30,200
HARVARD AVENUE
UnknownOver: INTERSTATE 405
12-ORA-405-6.20-IRVN, Orange, CA
Built 1983 ADT: 266,000
LOS ALISOS BLVD
UnknownOver: INTERSTATE 5
12-ORA-005-17.94-LGNH, Orange, CA
Built 1984 ADT: 285,000
BNSF,AMTRAK,METRO
UnknownOver: ST RTE 39 (BEACH BLVD)
12-ORA-039-16.04-BPK, Orange, CA
Built 1984 ADT: 57,500
BIRCH ST
UnknownOver: STATE ROUTE 73
12-ORA-073-R25.46-NPTB, Orange, CA
Built 1985 ADT: 172,000
MACARTHUR-N73 ONRA
UnknownOver: MACARTHUR BLVD
12-ORA-073-24.67-IRVN, Orange, CA
Built 1985 ADT: 20,000
YALE AVENUE
UnknownOver: INTERSTATE 5
12-ORA-005-R25.80-IRVN, Orange, CA
Built 1984 ADT: 290,000
PEDESTRIAN WALKWAY
UnknownOver: INTERSTATE 405
12-ORA-405-4.67-IRVN, Orange, CA
Built 1986 ADT: 266,000
MCFADDEN STREET
UnknownOver: STATE ROUTE 55
12-ORA-055-R9.96-TUS, Orange, CA
Built 1988 ADT: 269,700
S5-NEWPORT AV OFF
UnknownOver: N55-S5 CONNECTOR RAMP
12-ORA-005-30.17-TUS, Orange, CA
Built 1995 ADT: 15,000
N55-N5 CONNECTOR
UnknownOver: ROUTE 5 & 55, & CONNS
12-ORA-055-10.37-TUS, Orange, CA
Built 1995 ADT: 246,000
S55-S5 CONNECTOR
UnknownOver: ROUTE 5 & 55, CONNS
12-ORA-055-10.67-TUS, Orange, CA
Built 1995 ADT: 269,000
N5-N55 CONNECTOR
UnknownOver: N55-4TH ST & IRVINE RD
12-ORA-005-30.32-TUS, Orange, CA
Built 1995 ADT: 6,601
1ST ST
UnknownOver: INTERSTATE 5
12-ORA-005-30.90-SA, Orange, CA
Built 1995 ADT: 300,000
1ST ST
UnknownOver: STATE ROUTE 55 & RAMPS
12-ORA-055-10.80-TUS, Orange, CA
Built 1995 ADT: 51,770
4TH ST-S55 ON RAMP
UnknownOver: S55-N&S5 CONNECTORS
12-ORA-055-10.90-SA, Orange, CA
Built 1992 ADT: 53,540
4TH ST
UnknownOver: INTERSTATE 5
12-ORA-005-31.09-SA, Orange, CA
Built 1995 ADT: 300,000
FOURTH STREET
UnknownOver: STATE ROUTE 55
12-ORA-055-10.98-SA, Orange, CA
Built 1992 ADT: 51,770
ALTON PARKWAY WB
UnknownOver: STATE ROUTE 133 & RAMP
12-ORA-133-8.75-IRVN, Orange, CA
Built 1987 ADT: 40,000
ALTON PARKWAY EB
UnknownOver: STATE ROUTE 133 & RAMP
12-ORA-133-8.74-IRVN, Orange, CA
Built 1987 ADT: 40,000
BARRANCA PKWAY
UnknownOver: STATE ROUTE 133
12-ORA-133-9.00-IRVN, Orange, CA
Built 1990 ADT: 40,000
ROUTE 5
UnknownOver: JAMBOREE ROAD
12-ORA-005-27.59-IRVN, Orange, CA
Built 1991 ADT: 65,000
TUSTIN RANCH ROAD
UnknownOver: INTERSTATE 5
12-ORA-005-28.25-TUS, Orange, CA
Built 1992 ADT: 355,000
N133-N5 CONNECTOR
UnknownOver: INTERSTATE 5
12-ORA-133-M9.48-IRVN, Orange, CA
Built 1991 ADT: 243,700
S5-4TH ST & MABURY
UnknownOver: S 5 (LANE #6)
12-ORA-005-31.10-TUS, Orange, CA
Built 1995 ADT: 300,000
N5-1ST OFF-RAMP
UnknownOver: INTERSTATE 5
12-ORA-005-31.08-SA, Orange, CA
Built 1996 ADT: 300,000
SANTA ISABEL AVE
UnknownOver: STATE ROUTE 55
12-ORA-055-R3.27-CMS, Orange, CA
Built 1990 ADT: 142,000
BARRANCA PARKWAY
UnknownOver: INTERSTATE 5
12-ORA-005-22.80-IRVN, Orange, CA
Built 1990 ADT: 30,300
AIRPORT N55 OC
UnknownOver: INTERSTATE 405
12-ORA-405-7.84-IRVN, Orange, CA
Built 1990 ADT: 274,000
BALL ROAD
UnknownOver: INTERSTATE 5
12-ORA-005-37.64-ANA, Orange, CA
Built 1990 ADT: 276,300
INTERSTATE 5 SB
UnknownOver: GRAND AVE
12-ORA-005-31.65-SA, Orange, CA
Built 1995 ADT: 3,539
INTERSTATE 5 NB
UnknownOver: GRAND AVE
12-ORA-005-31.76-SA, Orange, CA
Built 1995 ADT: 36,000
BNSF,AMTRAK,METRO
UnknownOver: INTERSTATE 5
12-ORA-005-32.04-SA, Orange, CA
Built 1995 ADT: 298,000
INTERSTATE 5 SB
UnknownOver: 17TH STREET
12-ORA-005-32.46-SA, Orange, CA
Built 1995 ADT: 35,000
INTERSTATE 5 NB
UnknownOver: 17TH STREET
12-ORA-005-32.46-SA, Orange, CA
Built 1995 ADT: 35,000
17TH ST NB ON RA
UnknownOver: 17TH STREET
12-ORA-005-32.46-SA, Orange, CA
Built 1995 ADT: 35,000
MAIN ST
UnknownOver: I 5, MAIN-N5 ON, N5 OFF
12-ORA-005-33.09-SA, Orange, CA
Built 1996 ADT: 16,832
LINCOLN AVE
UnknownOver: INTERSTATE 5
12-ORA-005-32.05-SA, Orange, CA
Built 1995 ADT: 300,000
BRISTOL ST-LA VETA
UnknownOver: I 5 & CONS TO SR 57 & 22
12-ORA-005-34.14-SA, Orange, CA
Built 1992 ADT: 62,255
STATE ROUTE 22
UnknownOver: I-5 & CONNECTORS
12-ORA-022-R10.38-SA, Orange, CA
Built 1995 ADT: 17,000
S57-W22 CONNECTOR
UnknownOver: I 5 & CONNECTOR RAMPS
12-ORA-057-10.82L-SA, Orange, CA
Built 1995 ADT: 5,000
S5&S57-E22 CONNECT
UnknownOver: I 5 & CONNECTOR RAMPS
12-ORA-005-33.88-SA, Orange, CA
Built 1995 ADT: 300,000
Showing 3,701-3,750 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 |