State profile · Below median Poor share

California bridge safety

According to the Federal Highway Administration's 2024 National Bridge Inventory, condition ratings, load ratings, and Poor-condition shares for every public highway bridge in California.

25,848
Public bridges
45.6%
Good condition
5.9%
Poor condition

California holds 25,848 public highway bridges (#4 of 52 by inventory) with a 5.91% Poor share (#28 of 52 by Poor share).

That is 5.9% of the state's inventory, against an average of 7.5% across the 54 states and territories with Poor-rated bridges on file, which places it 25 of 54 ordered from the lowest Poor share upward. A bridge is rated Poor when its weakest applicable component scores 4 or below on the inspecting agency's 0-9 scale, so the category is a maintenance and funding signal rather than a closure order or a live crossing-safety verdict.

Inventory: FHWA NBI 2024 · last ETL August 2026

Total Bridges

25,848

Public highway bridges in California

Good Condition

45.6%

11,798 bridges rated 7-9

-4.4pp vs 50% benchmark

Poor Condition

5.9%

1,527 bridges whose lowest applicable component is rated 0-4

-1.6pp vs national avg 7.5%

California vs national bridge condition

California - Good condition share 45.6%
National avg

Share of bridges rated 7-9 on the FHWA 0-9 scale (deck, superstructure, substructure all good).

California - Poor-condition share 19.7%
National avg

Lower is better. Bar maxes at 30% (worst-state ceiling). National average sits at 7.5%.

California in the national condition pattern

Each point is a state or territory in the FHWA NBI; the highlighted point is this profile.

Inventory size and Poor-condition share are different measures: California has 25,848 bridges and a 5.9% Poor-condition share in the 2024 NBI, rank #25 of 54 jurisdictions ordered from the lowest share upward. The dashed comparisons mark the national average state rate and the midpoint of the plotted inventory range; neither is a live safety or closure threshold. Scatter plot of 54 data points. 0%10%20%30%40% 0k20k40k60k Public bridges in inventory (thousands) Poor-condition share (%) CA, Public bridges in inventory (thousands): 25.8k · Poor-condition share (%): 5.91%AL, Public bridges in inventory (thousands): 16.2k · Poor-condition share (%): 3.35%AK, Public bridges in inventory (thousands): 1.7k · Poor-condition share (%): 7.89%AZ, Public bridges in inventory (thousands): 8.6k · Poor-condition share (%): 1.15%AR, Public bridges in inventory (thousands): 13k · Poor-condition share (%): 5.43%CO, Public bridges in inventory (thousands): 9k · Poor-condition share (%): 4.82%CT, Public bridges in inventory (thousands): 4.4k · Poor-condition share (%): 4.72%DE, Public bridges in inventory (thousands): 0.9k · Poor-condition share (%): 1.26%DC, Public bridges in inventory (thousands): 0.3k · Poor-condition share (%): 1.95%FL, Public bridges in inventory (thousands): 13k · Poor-condition share (%): 2.79%GA, Public bridges in inventory (thousands): 15.1k · Poor-condition share (%): 1.59%GU, Public bridges in inventory (thousands): 0k · Poor-condition share (%): 12.77%HI, Public bridges in inventory (thousands): 1.2k · Poor-condition share (%): 6.53%ID, Public bridges in inventory (thousands): 4.6k · Poor-condition share (%): 4.9%IL, Public bridges in inventory (thousands): 26.9k · Poor-condition share (%): 9.35%IN, Public bridges in inventory (thousands): 19.5k · Poor-condition share (%): 5.22%IA, Public bridges in inventory (thousands): 23.7k · Poor-condition share (%): 19.16%KS, Public bridges in inventory (thousands): 24.9k · Poor-condition share (%): 5.26%KY, Public bridges in inventory (thousands): 14.5k · Poor-condition share (%): 7.37%LA, Public bridges in inventory (thousands): 12.7k · Poor-condition share (%): 11.48%ME, Public bridges in inventory (thousands): 2.5k · Poor-condition share (%): 15.41%MD, Public bridges in inventory (thousands): 5.5k · Poor-condition share (%): 4.56%MA, Public bridges in inventory (thousands): 5.3k · Poor-condition share (%): 8.88%MI, Public bridges in inventory (thousands): 11.4k · Poor-condition share (%): 11.27%MN, Public bridges in inventory (thousands): 13.5k · Poor-condition share (%): 4.44%MS, Public bridges in inventory (thousands): 16.7k · Poor-condition share (%): 6.03%MO, Public bridges in inventory (thousands): 24.6k · Poor-condition share (%): 8.95%MT, Public bridges in inventory (thousands): 5.2k · Poor-condition share (%): 6.81%NE, Public bridges in inventory (thousands): 15.4k · Poor-condition share (%): 7.9%NV, Public bridges in inventory (thousands): 2.1k · Poor-condition share (%): 1.14%NH, Public bridges in inventory (thousands): 2.5k · Poor-condition share (%): 7.51%NJ, Public bridges in inventory (thousands): 6.8k · Poor-condition share (%): 6.01%NM, Public bridges in inventory (thousands): 4k · Poor-condition share (%): 4.51%NY, Public bridges in inventory (thousands): 17.6k · Poor-condition share (%): 9.43%NC, Public bridges in inventory (thousands): 19.2k · Poor-condition share (%): 6.76%ND, Public bridges in inventory (thousands): 4.3k · Poor-condition share (%): 10.98%OH, Public bridges in inventory (thousands): 26.7k · Poor-condition share (%): 4.74%OK, Public bridges in inventory (thousands): 22.9k · Poor-condition share (%): 7.7%OR, Public bridges in inventory (thousands): 8.3k · Poor-condition share (%): 4.61%PA, Public bridges in inventory (thousands): 23.3k · Poor-condition share (%): 12.58%PR, Public bridges in inventory (thousands): 2.4k · Poor-condition share (%): 13.92%RI, Public bridges in inventory (thousands): 0.8k · Poor-condition share (%): 15.2%SC, Public bridges in inventory (thousands): 9.5k · Poor-condition share (%): 6.17%SD, Public bridges in inventory (thousands): 5.9k · Poor-condition share (%): 16.36%TN, Public bridges in inventory (thousands): 20.4k · Poor-condition share (%): 4.41%TX, Public bridges in inventory (thousands): 56.7k · Poor-condition share (%): 1.23%UT, Public bridges in inventory (thousands): 3.1k · Poor-condition share (%): 2.91%VT, Public bridges in inventory (thousands): 2.9k · Poor-condition share (%): 2.9%VI, Public bridges in inventory (thousands): 0k · Poor-condition share (%): 29.17%VA, Public bridges in inventory (thousands): 14.1k · Poor-condition share (%): 3.39%WA, Public bridges in inventory (thousands): 8.5k · Poor-condition share (%): 5.45%WV, Public bridges in inventory (thousands): 7.3k · Poor-condition share (%): 18.64%WI, Public bridges in inventory (thousands): 14.4k · Poor-condition share (%): 6.52%WY, Public bridges in inventory (thousands): 3.1k · Poor-condition share (%): 6.51%
Inventory size and Poor-condition share are different measures: California has 25,848 bridges and a 5.9% Poor-condition share in the 2024 NBI, rank #25 of 54 jurisdictions ordered from the lowest share upward. The dashed comparisons mark the national average state rate and the midpoint of the plotted inventory range; neither is a live safety or closure threshold.

California vs all states by public bridge inventory

Where this state's FHWA NBI public-highway bridge count sits among every state and territory on PlainBridges

25,848 4th of 54 higher than 50 of 54 states

States and territories, banded by public bridge inventory size

Each bar is a band; taller bars hold more states. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count and share, and where it sits relative to this entry.

Source FHWA National Bridge Inventory · 2024

Read the rank neighborhood for California

The highlighted point is California: 25,848 bridges and 5.91% in Poor condition, rank #25 of 54 jurisdictions ordered from the lowest share upward. The five jurisdictions immediately above and below California on that same Poor-share ordering:

  • Arkansas: 12,974 bridges · 5.43% Poor
  • Washington: 8,474 bridges · 5.45% Poor
  • California: 25,848 bridges · 5.91% Poor
  • New Jersey: 6,827 bridges · 6.01% Poor
  • Mississippi: 16,739 bridges · 6.03% Poor

The full national sortable table lives on the rankings page.

Material families in California

Exclusive FHWA material families across all 25,848 bridges in this state; continuous variants fold into the parent family. Orthogonal to the Poor-share scatter above.

Who maintains California’s inventory

State agency holds 48.8% of the 25,848 public highway bridges filed under California in the 2024 NBI, the agency-of-record split for this state, not a condition verdict.

When California’s bridges were built

Pre-1950 construction accounts for 15.5% of the 25,848 bridges with a recorded original year in California. Era bands are orthogonal to the Poor-share ranking above.

Condition Distribution

California45.6%48.4%GoodFairPoor
Bridge inventory deck-condition mix - California (FHWA NBI)

Counties (58)

Alameda 658 Alpine 32 Amador 61 Butte 437 Calaveras 105 Colusa 211 Contra Costa 618 Del Norte 96 El Dorado 192 Fresno 916 Glenn 242 Humboldt 396 Imperial 444 Inyo 66 Kern 668 Kings 168 Lake 129 Lassen 108 Los Angeles 3547 Madera 247 Marin 207 Mariposa 109 Mendocino 357 Merced 528 Modoc 87 Mono 49 Monterey 377 Napa 158 Nevada 135 Orange 1164 Placer 337 Plumas 165 Riverside 1117 Sacramento 740 San Benito 76 San Bernardino 1422 San Diego 1632 San Francisco 143 San Joaquin 644 San Luis Obispo 401 San Mateo 361 Santa Barbara 418 Santa Clara 964 Santa Cruz 192 Shasta 492 Sierra 65 Siskiyou 421 Solano 373 Sonoma 609 Stanislaus 386 Sutter 121 Tehama 450 Trinity 194 Tulare 589 Tuolumne 125 Ventura 501 Yolo 271 Yuba 127

California vs nearby ranks

Adjacent states by Poor-condition share (lower share = better)

States are ranked by the share of bridges whose lowest applicable component rating is 4 or below. This describes recorded condition; it does not measure funding effectiveness or live crossing safety. States here sit immediately above and below California on the same metric.

AR

Arkansas

5.43% top marginal rate
Structure
Progressive
Burden @ $100K
$12,974

WA

Washington

5.45% top marginal rate
Structure
Progressive
Burden @ $100K
$8,474
Selected

CA

California

5.91% top marginal rate
Structure
Progressive
Burden @ $100K
$25,848

NJ

New Jersey

6.01% top marginal rate
Structure
Progressive
Burden @ $100K
$6,827

MS

Mississippi

6.03% top marginal rate
Structure
Progressive
Burden @ $100K
$16,739

Bridges Needing Most Attention in California

Six lowest-condition bridges in California, ranked by the portal's composite display score. Inspection intervals are risk-based under current NBIS rules.

OLD COTTONWOOD CR

Poor

Over: COTTONWOOD CREEK

0.2 MI E/O COTTONWOOD CK, Siskiyou, CA

Built 1957 Load: 0.0 t ADT: 10

STATE ROUTE 211

Poor

Over: EEL RIVER

01-HUM-211-78.10, Humboldt, CA

Built 1911 Load: 0.0 t ADT: 5,300

CR 305 (MAPES RD)

Poor

Over: HARTSON SLOUGH

0.4 MI E/O RD 303, Lassen, CA

Built 1978 Load: 0.0 t ADT: 100

CR 111 (PITTVILLE)

Poor

Over: BEAVER CREEK

1.0 MI S OF CR 404, Lassen, CA

Built 1975 Load: 0.0 t ADT: 100

RD 424 (BASSETT)

Poor

Over: WILLOW CREEK

1.5 MI N OF RD A-2, Lassen, CA

Built 1960 Load: 0.0 t ADT: 120

CR417 (PUNKIN CTR)

Poor

Over: MUDDY SLOUGH NO 1

2.8 MI S OF CR A2, Lassen, CA

Built 1955 Load: 0.0 t ADT: 200

All Bridges in California

COFFEE ROAD NB

Good

Over: KERN RIVER

0.2 MI N TRUXTUN AVE, Kern, CA

Built 1981 Load: 88.8 t ADT: 30,000

IOWA HILL RD

Good

Over: N SHIRTTAIL CANYON CREEK

4 MI E OF IOWA HILL, Placer, CA

Built 1981 Load: 89.4 t ADT: 200

INTERSTATE 5 NB

Good

Over: NCTD BNSF & AMTRAK SCRRA

11-SD-005-R55.72R-OCN, San Diego, CA

Built 1967 Load: 89.7 t ADT: 156,000

SOUTH RUSSIAN ROAD

Good

Over: SOUTH RUSSIAN CREEK

SAWYERS BAR, Siskiyou, CA

Built 1968 Load: 90.8 t ADT: 20

NO DATA ENTERED

Good

Over: 051054000001005

S9 T1N R5E, Humboldt, CA

Built 1973 Load: 90.8 t ADT: 50

ARLETA AVE

Good

Over: TUJUNGA WASH

TRUESDALE ST & TONOPAH ST, Los Angeles, CA

Built 1968 Load: 92.3 t ADT: 13,000

U.S. HIGHWAY 101

Good

Over: SAUSALITO ROAD

04-MRN-101-0.32-SAUS, Marin, CA

Built 1935 Load: 92.6 t ADT: 106,000

OAK GROVE RD

Good

Over: PINE CREEK

0.5 MI N WALNUT AVE, Contra Costa, CA

Built 1974 Load: 92.7 t ADT: 6,600

I-5

Good

Over: N405-N5 CONNECTOR RAMP

07-LA-005-41.57-LA, Los Angeles, CA

Built 1963 Load: 92.7 t ADT: 156,373

INTERSTATE 505 NB

Good

Over: HORSE CREEK

04-SOL-505-R0.21-VAC, Solano, CA

Built 1963 Load: 93.0 t ADT: 16,750

W210-S605 CONNECTR

Good

Over: N605-W210 BNSF LACMTA

07-LA-210-R36.35-IRW, Los Angeles, CA

Built 1970 Load: 94.3 t ADT: 46,500

INTERSTATE 210

Good

Over: BNSF RY

07-LA-210-R37.83-IRW, Los Angeles, CA

Built 1968 Load: 95.9 t ADT: 266,000

STATE ROUTE 169

Good

Over: PECWAN CREEK

01-HUM-169-14.46, Humboldt, CA

Built 1961 Load: 96.6 t ADT: 260

S710-BANDINI OFFRP

Good

Over: BANDINI BLVD

07-LA-710-21.99-VER, Los Angeles, CA

Built 1957 Load: 96.6 t ADT: 21,700

STATE ROUTE 128

Good

Over: WRAGG CREEK

04-NAP-128-27.90, Napa, CA

Built 1955 Load: 97.2 t ADT: 1,675

STATE ROUTE 150

Good

Over: HILLSIDE

07-VEN-150-28.92, Ventura, CA

Built 1979 Load: 97.2 t ADT: 3,250

HOPE STREET

Good

Over: 4TH STREET

AT 4TH STREET, Los Angeles, CA

Built 1969 Load: 98.5 t ADT: 21,377

STATE ROUTE 96

Good

Over: KLAMATH RIVER

02-SIS-096-R5.08, Siskiyou, CA

Built 1970 Load: 99.8 t ADT: 410

JIM DAY ROAD

Good

Over: PIT RIVER

0.4 MI S/E OF SR 299, Shasta, CA

Built 1973 Load: 99.8 t ADT: 200

N99-WB 16TH ST OFF

Good

Over: W140-N99 ON-RAMP

10-MER-099-13.90-MER, Merced, CA

Built 1962 Load: 99.8 t ADT: 1,450

SR 1 ABANDONED RR

Good

Over: DIVARTY STREET

05-MON-001-R83.27, Monterey, CA

Built 1973 Load: 99.8 t ADT: 59,000

U.S. HIGHWAY 101

Good

Over: HOLLY DR

07-LA-101-7.38-LA, Los Angeles, CA

Built 1952 Load: 99.8 t ADT: 154,000

INTERSTATE 710

Good

Over: UP RR

07-LA-710-17.58-SGT, Los Angeles, CA

Built 1957 Load: 99.8 t ADT: 223,000

INTERSTATE 710

Good

Over: BNSF RY AMTRAK METROLINK

07-LA-710-22.41-CMRC, Los Angeles, CA

Built 1954 Load: 99.8 t ADT: 217,000

FIGUEROA ST & 23RD

Good

Over: INTERSTATE 110

07-LA-110-20.92-LA, Los Angeles, CA

Built 1954 Load: 99.8 t ADT: 27,000

FLOWER ST & LRT

Good

Over: INTERSTATE 110

07-LA-110-20.76-LA, Los Angeles, CA

Built 1956 Load: 99.8 t ADT: 10,200

INTERSTATE 210

Good

Over: SAWPIT WASH

07-LA-210-R34.60-MNRO, Los Angeles, CA

Built 1967 Load: 99.8 t ADT: 258,000

LANKERSHIM BLVD

Good

Over: LOS ANGELES RIVER

0.5 MI NORTH OF US-101, Los Angeles, CA

Built 1940 Load: 99.8 t ADT: 44,000

ELBERON AVE

Good

Over: GAFFEY STREET

0.1 M W/O GAFFEY PLACE, Los Angeles, CA

Built 1936 Load: 99.8 t ADT: 1,960

MLHLLND HWY S/XING

Good

Over: ARROYO SEQUIT

1.5MI N/O SR-1 HWY, Los Angeles, CA

Built 1938 Load: 99.8 t ADT: 408

LASSEN ST

Good

Over: BROWN CANYON WASH

0.16 KM W/O CANOGA AVE, Los Angeles, CA

Built 1971 Load: 99.8 t ADT: 21,400

COLD CYN RD

Good

Over: COLD CYN CRK

0.7MI S/O MULHOLLAND HWY, Los Angeles, CA

Built 1981 Load: 99.8 t ADT: 1,122

LANCASTER RD

Good

Over: UNNAMED WASH

0.1MI W/O 190TH ST W, Los Angeles, CA

Built 1976 Load: 99.8 t ADT: 408

HARBOR SCENIC DR

Good

Over: OIL PIPELINES

0.1MI S/O PANORAMA DR, Los Angeles, CA

Built 1969 Load: 99.8 t ADT: 2,163

SIERRA MADRE AVE

Good

Over: ROSEDALE PUC

0.8MI E/O N AZUSA AVE, Los Angeles, CA

Built 2012 Load: 99.8 t ADT: 9,384

STEPHEN RANCH RD

Good

Over: UNNAMED WASH

2.2MI N/O BASELINE RD, Los Angeles, CA

Built 1960 Load: 99.8 t ADT: 252

HAVEN AVENUE

Good

Over: DEER CREEK CHANNEL

0.5 MI N OF RTE 66, San Bernardino, CA

Built 1982 Load: 99.8 t ADT: 28,880

TERRA COTTA STREET

Good

Over: MCVICKERCHANNEL

.03 MI SW MIMOSA&T. COTTA, Riverside, CA

Built 1996 Load: 99.8 t ADT: 2,350

FRIARS ROAD

Good

Over: MURRAY CANYON

500FT E/O SR-163, San Diego, CA

Built 1970 Load: 99.8 t ADT: 64,000

BASILONE ROAD

Good

Over: UNNAMED CREEK

200 S. OF STAGECOACH RD, San Diego, CA

Built 2000 Load: 99.9 t ADT: 10,550

Recreation Road

Good

Over: Coachella Canal Turnout

50 feet upstream Drop 1, Imperial, CA

Built 1940 Load: 99.9 t ADT: 50

STATE ROUTE 36

Good

Over: HARRISON GULCH

02-SHA-036-3.56, Shasta, CA

Built 1952 Load: 99.9 t ADT: 475

STATE ROUTE 20

Good

Over: WOLF CREEK

03-NEV-020-R13.44-GVY, Nevada, CA

Built 1969 Load: 99.9 t ADT: 47,000

STWRT PT-SKGG SPRG

Good

Over: WOLF CREEK CULVERT WEST

1.7 MI E/O HOUSE CREEK, Sonoma, CA

Built 1978 Load: 99.9 t ADT: 300

STWRT PT-SKGG SPRG

Good

Over: WOLF CREEK CULVERT EAST

2.3 MI E/O HOUSE CREEK, Sonoma, CA

Built 1978 Load: 99.9 t ADT: 300

INTERSTATE 5

Good

Over: EAST DRAINAGE CANAL

03-SAC-005-26.88-SAC, Sacramento, CA

Built 1968 Load: 99.9 t ADT: 138,000

INTERSTATE 80

Good

Over: SAN PABLO CREEK

04-CC-080-4.81, Contra Costa, CA

Built 1954 Load: 99.9 t ADT: 179,000

INTERSTATE 80

Good

Over: PINOLE CREEK

04-CC-080-8.40-PIN, Contra Costa, CA

Built 1957 Load: 99.9 t ADT: 179,000

INTERSTATE 80

Good

Over: RODEO CREEK

04-CC-080-10.73, Contra Costa, CA

Built 1958 Load: 99.9 t ADT: 115,000

STATE ROUTE 4

Good

Over: CHEROKEE CREEK

10-CAL-004-R19.08, Calaveras, CA

Built 1989 Load: 99.9 t ADT: 5,900

Showing 24,251-24,300 of 25,848 bridges

Related

All states → | National rankings → | Understanding conditions → | Retired SD term explained →
Data sourced from the FHWA National Bridge Inventory (NBI), latest released cycle. See our methodology for details. Retrieved and formatted by PlainBridges.

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). Poor condition is an inspection-record category, not a closure or unsafe-to-cross designation. Consult the bridge owner for current status.

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.

What to do with this

Use California's inventory picture to drill to a county or a specific span.

  • Browse counties in California and open the highest-Poor shares first. County list
  • See where this state sits among peers on Poor-condition share. State rankings
  • Compare this state with another jurisdiction on the same measures. State compare

NBI condition ratings are inventory snapshots, not live crossing-safety verdicts.

Every figure on PlainBridges is rendered directly from federal source data, no number is typed in by an editor. California Good/Fair/Poor shares and county rollups on this page are computed from the same NBI extract as the national boards; no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of 2024 NBI release. NBI condition categories reflect the latest reported inventory record, not a live safety, closure, or travel decision.