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

I 110

Good

Over: CENTURY BLVD

07-LA-110-14.97-LA, Los Angeles, CA

Built 1958 Load: 62.5 t ADT: 244,000

LA LOMA RD

Good

Over: ARROYO SECO CHAN

100FT W/O ARROYO BLVD, Los Angeles, CA

Built 1914 Load: 62.5 t ADT: 3,570

LAKE ROAD

Good

Over: SAN DIEGO CREEK CHANNEL

0.2 MI SE BARRANCA PKWY, Orange, CA

Built 1981 Load: 62.5 t ADT: 5,100

U.S. HIGHWAY 101

Good

Over: SOUTH FORK EEL RIVER

01-HUM-101-R8.30, Humboldt, CA

Built 1969 Load: 62.9 t ADT: 5,700

MASONITE ROAD

Good

Over: U.S. HIGHWAY 101

01-MEN-101-26.37, Mendocino, CA

Built 1962 Load: 62.9 t ADT: 5

WHITWORTH ROAD

Good

Over: GARZAS CREEK

0.1 MI S TAGLIO ROAD, Merced, CA

Built 1977 Load: 62.9 t ADT: 160

ROUTE 2

Good

Over: BROADWAY UC

07-LA-002-R18.65-LA, Los Angeles, CA

Built 1976 Load: 62.9 t ADT: 146,000

OCEANVIEW-S15 ONRA

Good

Over: CHOLLAS CREEK

11-SD-015-R0.68-SD, San Diego, CA

Built 1978 Load: 62.9 t ADT: 10,000

CAMPBELL RIDGE RD.

Good

Over: CAMPBELL RIDGE SLIDE

5.4 MI NWEST OF SR299, Trinity, CA

Built 2006 Load: 63.2 t ADT: 100

STATE ROUTE 32

Good

Over: NORTH FORK DEER CREEK

02-TEH-032-24.02, Tehama, CA

Built 1972 Load: 63.2 t ADT: 1,100

US HIGHWAY 101 NB

Good

Over: ALISAL ROAD

05-MON-101-87.06-SAL, Monterey, CA

Built 1954 Load: 63.2 t ADT: 36,900

FREMONT ST-S1 ONRP

Good

Over: SR 1 & W68-N1 CONN RMP

05-MON-001-R78.18-MON, Monterey, CA

Built 1968 Load: 63.2 t ADT: 1,800

US HIGHWAY 101 SB

Good

Over: N405-N101 CONNECTOR RAMP

07-LA-101-17.07L-LA, Los Angeles, CA

Built 1958 Load: 63.2 t ADT: 229,750

HUMBOLT AVENUE

Good

Over: DEER CREEK CHANNEL

0.4 MI W HAVEN AVE, San Bernardino, CA

Built 1982 Load: 63.2 t ADT: 2,200

SIXTH STREET

Good

Over: DEER CREEK CHANNEL

0.6 MI E ARCHIBALD AVE, San Bernardino, CA

Built 1981 Load: 63.2 t ADT: 13,440

EIGHTH STREET

Good

Over: DEER CREEK CHANNEL

0.4 MI W HAVEN AVE, San Bernardino, CA

Built 1982 Load: 63.2 t ADT: 3,489

PERALTA STREET

Good

Over: STATE ROUTE 123

04-ALA-123-0.15-EMV, Alameda, CA

Built 1936 Load: 63.5 t ADT: 3,000

US HIGHWAY 101 SB

Good

Over: ALISAL ROAD

05-MON-101-87.06-SAL, Monterey, CA

Built 1954 Load: 63.5 t ADT: 41,000

STATE ROUTE 108

Good

Over: WEST WALKER RIVER

09-MNO-108-12.93, Mono, CA

Built 1940 Load: 63.5 t ADT: 3,050

S. PASADENA AVE

Good

Over: N710-E210 CONNECTOR RAMP

07-LA-710-R32.68-PAS, Los Angeles, CA

Built 1975 Load: 63.5 t ADT: 900

INTERSTATE 5 SB

Good

Over: STONE CORRAL CREEK

03-COL-005-R27.74, Colusa, CA

Built 1971 Load: 63.8 t ADT: 12,500

INTERSTATE 5

Good

Over: SALT CREEK

03-COL-005-R19.25, Colusa, CA

Built 1971 Load: 63.8 t ADT: 15,000

INTERSTATE 5

Good

Over: SALT CREEK

03-COL-005-R19.25, Colusa, CA

Built 1971 Load: 63.8 t ADT: 15,000

STATE ROUTE 113

Good

Over: STATE ROUTE 99

03-SUT-113-16.35, Sutter, CA

Built 2014 Load: 63.8 t ADT: 3,800

COUNTY ROAD # 13

Good

Over: SLOUGH 7

0.25 MI EAST OF CR 98, Yolo, CA

Built 1979 Load: 63.8 t ADT: 1,309

WHIPPLE RD

Good

Over: DRY CREEK

0.1 MI W OF 7TH ST, Alameda, CA

Built 1950 Load: 63.8 t ADT: 10,300

BROADWAY

Good

Over: BROADWAY-N101 ON-RAMP

07-LA-101-1.10-LA, Los Angeles, CA

Built 1950 Load: 63.8 t ADT: 15,000

STATE ROUTE 91

Good

Over: BNSF RY AMTRAK METROLINK

08-RIV-091-R1.14, Riverside, CA

Built 1970 Load: 63.8 t ADT: 264,000

INTERSTATE 5

Good

Over: SASSAFRAS STREET

11-SD-005-R17.77-SD, San Diego, CA

Built 1967 Load: 63.8 t ADT: 73,500

BROADWAY RD

Good

Over: SHEKELL WASH

0.3 MI W GRIMES CYN RD, Ventura, CA

Built 1950 Load: 64.2 t ADT: 2,400

MINTURN ROAD

Good

Over: DUTCHMAN CREEK

0.4 MI S BUCHAN HOLOW RD, Merced, CA

Built 1974 Load: 64.5 t ADT: 1,613

INTERSTATE 5

Good

Over: FLETCHER DR

07-LA-005-22.97-LA, Los Angeles, CA

Built 1961 Load: 64.5 t ADT: 264,292

CANTARA STREET

Good

Over: TUJUNGA WASH

0.5 MI E/O WOODMAN AVE, Los Angeles, CA

Built 1952 Load: 64.5 t ADT: 5,400

TAMALPAIS AVE

Good

Over: WARNER CREEK

0.1 MI SW NOVATO BLVD, Marin, CA

Built 1973 Load: 64.8 t ADT: 4,458

YOSEMITE AVE

Good

Over: BERRYESSA CREEK

E OF MILPITAS BLVD, Santa Clara, CA

Built 1972 Load: 64.8 t ADT: 11,000

HAMMETT RD

Good

Over: UP RR

10-STA-099-R24.30, Stanislaus, CA

Built 1970 Load: 64.8 t ADT: 2,000

E&W134-E2 CONNECTR

Good

Over: GLENOAKS BLVD

07-LA-134-R9.03-GNDL, Los Angeles, CA

Built 1978 Load: 64.8 t ADT: 24,787

ATLANTIC BLVD

Good

Over: LOS ANGELES RIV

0.6MI N/O SLAUSON AVE, Los Angeles, CA

Built 1931 Load: 64.8 t ADT: 58,397

9TH ST

Good

Over: SAN ANTONIO WASH

450FT E/O E END AVE, Los Angeles, CA

Built 1962 Load: 64.8 t ADT: 2,500

Loleta Ave

Good

Over: Tehama-Colusa Canal

NW of Chico, Tehama, CA

Built 1966 Load: 64.8 t ADT: 120

Kirkwood Road

Good

Over: Tehama-Colusa Canal

2 mi S of Corning, Tehama, CA

Built 1966 Load: 64.8 t ADT: 200

EMERALD VISTA DR

Good

Over: ELK GROVE CREEK

0.1 MI N ELK GROVE BLVD, Sacramento, CA

Built 1977 Load: 65.1 t ADT: 11,470

ALISO CYN RD

Good

Over: GLEASON CYN CRK

4.7MI W/O ANGELES FOR HWY, Los Angeles, CA

Built 2006 Load: 65.1 t ADT: 1,326

CHANDLER BL N RDWY

Good

Over: TUJUNGA WASH

0.1 MI E COLDWTER CYN AVE, Los Angeles, CA

Built 1951 Load: 65.4 t ADT: 19,500

E FRK RD

Good

Over: BURRO CYN

0.7MI E/O SAN GBRL CYN RD, Los Angeles, CA

Built 1973 Load: 65.4 t ADT: 900

LIMONITE AVENUE

Good

Over: DAY CREEK CHANNEL

0.6 MI. W/O ETIWANDA AVE., Riverside, CA

Built 1984 Load: 65.4 t ADT: 18,000

INTERSTATE 110

Good

Over: WASHINGTON BLVD

07-LA-110-21.24-LA, Los Angeles, CA

Built 1954 Load: 65.8 t ADT: 300,000

INTERSTATE 5

Good

Over: SMITH CREEK

03-YOL-005-R16.74, Yolo, CA

Built 1970 Load: 66.1 t ADT: 11,750

INTERSTATE 110

Good

Over: GAGE AVE

07-LA-110-17.51-LA, Los Angeles, CA

Built 1956 Load: 66.1 t ADT: 300,000

INTERSTATE 110

Good

Over: 79TH STREET

07-LA-110-16.52-LA, Los Angeles, CA

Built 1956 Load: 66.1 t ADT: 300,000

Showing 24,101-24,150 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.