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

HENRY MILLER AVE

Fair

Over: SAN LUIS CANAL

0.75 MI E OF SR 165, Merced, CA

Built 1971 Load: 30.5 t ADT: 2,310

STATE ROUTE 140

Fair

Over: MILES CREEK

10-MPA-140-2.89, Mariposa, CA

Built 1928 Load: 30.5 t ADT: 4,650

STATE ROUTE 33

Fair

Over: ZAPATO CHINO CREEK

06-FRE-033-5.28, Fresno, CA

Built 1930 Load: 30.5 t ADT: 2,100

SR 180 EB

Fair

Over: FIRST STREET

06-FRE-180-R58.86-FRE, Fresno, CA

Built 1999 Load: 30.5 t ADT: 79,000

S DICKENSON AVE

Fair

Over: CRESCENT DITCH

1.4 MI S MT WHITNEY AVE, Fresno, CA

Built 1946 Load: 30.5 t ADT: 850

US HIGHWAY 101 SB

Fair

Over: CANAL STREET

05-MON-101-R40.72-KNC, Monterey, CA

Built 1968 Load: 30.5 t ADT: 7,950

US HIGHWAY 101 NB

Fair

Over: CANAL STREET

05-MON-101-R40.72-KNC, Monterey, CA

Built 1968 Load: 30.5 t ADT: 7,950

PANCHORICO RD

Fair

Over: PANCHO RICO CREEK

4 MI E SARGENT RD, Monterey, CA

Built 1982 Load: 30.5 t ADT: 60

LACEY BLVD

Fair

Over: LEMOORE CANAL

@ 17TH AVE, Kings, CA

Built 1983 Load: 30.5 t ADT: 3,748

STATE ROUTE 198

Fair

Over: DEEP CREEK

06-TUL-198-R16.00, Tulare, CA

Built 1951 Load: 30.5 t ADT: 20,000

M348 S. FORK DR

Fair

Over: S FORK KAWEAH RIVER

1.42 MI SE OF M347, Tulare, CA

Built 1934 Load: 30.5 t ADT: 575

RD 156

Fair

Over: DEEP CREEK

1.4 MI S OF AVE 280, Tulare, CA

Built 1959 Load: 30.5 t ADT: 425

SAN LUIS BAY DRIVE

Fair

Over: SAN LUIS OBISPO CREEK

0.15 MI E S.R. 1, San Luis Obispo, CA

Built 1964 Load: 30.5 t ADT: 7,475

SEVENTH ST

Fair

Over: US HIGHWAY 101

05-SB-101-3.65-CARP, Santa Barbara, CA

Built 1954 Load: 30.5 t ADT: 5,500

PATTERSON AVE

Fair

Over: SAN JOSE CREEK

0.3 MI N CATHEDRAL OAK R, Santa Barbara, CA

Built 1968 Load: 30.5 t ADT: 2,998

US HIGHWAY 101 NB

Fair

Over: SAN MIGUELITO RD

07-VEN-101-R35.35, Ventura, CA

Built 1973 Load: 30.5 t ADT: 40,500

AVENUE "E"

Fair

Over: ROUTE 14

07-LA-014-R73.00, Los Angeles, CA

Built 1968 Load: 30.5 t ADT: 255

STATE ROUTE 134

Fair

Over: HARVEY DR

07-LA-134-R8.81-GNDL, Los Angeles, CA

Built 1967 Load: 30.5 t ADT: 227,378

TEMPLE AVE

Fair

Over: STATE ROUTE 57

07-LA-057-6.17-POM, Los Angeles, CA

Built 1970 Load: 30.5 t ADT: 34,000

INTERSTATE 210 EB

Fair

Over: SIERRA MADRE BLVD

07-LA-210-R28.46-PAS, Los Angeles, CA

Built 1976 Load: 30.5 t ADT: 282,000

STATE ROUTE 91

Fair

Over: MAIN STREET

07-LA-091-R6.90-CRSN, Los Angeles, CA

Built 1974 Load: 30.5 t ADT: 197,000

S73-N&S133

Fair

Over: WILDLIFE PATHWAY

12-ORA-073-16.95-LGNB, Orange, CA

Built 1996 Load: 30.5 t ADT: 1,701

SANTIAGO CNYN ROAD

Fair

Over: SANTIAGO CREEK

0.2 MI W/O SILVERADO CYN, Orange, CA

Built 1963 Load: 30.5 t ADT: 7,000

MAGNOLIA ST

Fair

Over: HUNTINGTON BEACH CHANNEL

0.2 MI N/O RTE 1, Orange, CA

Built 1973 Load: 30.5 t ADT: 9,000

STATE ROUTE 86 SB

Fair

Over: CALOTUS DITCH

08-RIV-086-2.01, Riverside, CA

Built 1989 Load: 30.5 t ADT: 153,000

STATE ROUTE 86 NB

Fair

Over: OTAN DITCH

08-RIV-086-0.99, Riverside, CA

Built 1979 Load: 30.5 t ADT: 15,300

INTERSTATE 10 WB

Fair

Over: WEST CHANNEL STUBBY WASH

08-RIV-010-R24.20, Riverside, CA

Built 1966 Load: 30.5 t ADT: 45,500

INTERSTATE 10 EB

Fair

Over: WEST COTTON GULCH

08-RIV-010-R79.94, Riverside, CA

Built 1965 Load: 30.5 t ADT: 11,250

BROADWAY

Fair

Over: I 5 CONNS ON&OFF RAMPS

11-SD-005-R15.18-SD, San Diego, CA

Built 1962 Load: 30.5 t ADT: 8,360

MAIN-N15 ON RAMP

Fair

Over: SOUTH BRANCH CHOLLAS CRK

11-SD-015-0.47-SD, San Diego, CA

Built 1954 Load: 30.5 t ADT: 4,200

INTERSTATE 805 SB

Fair

Over: MAIN STREET

11-SD-805-3.65-CHV, San Diego, CA

Built 1971 Load: 30.5 t ADT: 101,000

CARR RD

Fair

Over: ASH CANAL

1.8 MI E/O BARBARA WORTH, Imperial, CA

Built 1940 Load: 30.5 t ADT: 205

32143

Fair

Over: GREEN CREEK

NO DATA ENTERED, Mono, CA

Built 1961 Load: 30.5 t ADT: 30

U.S. HIGHWAY 101

Fair

Over: SR 1 RICH BY FRNTGE RD

04-MRN-101-4.03-SAUS, Marin, CA

Built 1957 Load: 30.6 t ADT: 133,000

INTERSTATE 5 SB

Fair

Over: UP RR & AMTRAK

02-SIS-005-R9.20, Siskiyou, CA

Built 1964 Load: 30.8 t ADT: 20,000

INTERSTATE 5 SB

Fair

Over: STATE ROUTE 265

02-SIS-005-R19.85-WEED, Siskiyou, CA

Built 1973 Load: 30.8 t ADT: 7,150

EDDYS GULCH ROAD

Fair

Over: NORTH FORK SALMON RIVER

S SAWYERS BAR RD, Siskiyou, CA

Built 1968 Load: 30.8 t ADT: 167

STATE ROUTE 96

Fair

Over: HILLSIDE

01-HUM-096-16.82, Humboldt, CA

Built 1964 Load: 30.8 t ADT: 1,505

EAGLE CRK LOOP RD

Fair

Over: MINNEHAHA CREEK

3 MI N OF COFFEE CRK RD, Trinity, CA

Built 1974 Load: 30.8 t ADT: 60

STATE ROUTE 273

Fair

Over: ANDERSON CREEK

02-SHA-273-5.10-AND, Shasta, CA

Built 1948 Load: 30.8 t ADT: 9,800

INTERSTATE 5 SB

Fair

Over: UPPER SALT CREEK ROAD

02-SHA-005-R37.08, Shasta, CA

Built 1966 Load: 30.8 t ADT: 8,800

OLD ALTURAS ROAD

Fair

Over: DRY CREEK

0.2 MI E DESCHUTES RD, Shasta, CA

Built 1970 Load: 30.8 t ADT: 1,691

STATE ROUTE 70

Fair

Over: UP RR

02-LAS-070-1.16, Lassen, CA

Built 1953 Load: 30.8 t ADT: 4,200

CR213 (LEAVITT LN)

Fair

Over: SUSAN RIVER OVERFLOW

0.65 MI N OF US 395, Lassen, CA

Built 1973 Load: 30.8 t ADT: 100

STATE ROUTE 36

Fair

Over: DRY CREEK

02-TEH-036-10.35, Tehama, CA

Built 1959 Load: 30.8 t ADT: 520

STATE ROUTE 162

Fair

Over: SHORT CREEK

01-MEN-162-34.03, Mendocino, CA

Built 1962 Load: 30.8 t ADT: 2,200

STATE ROUTE 1

Fair

Over: GUALALA RIVER

01-MEN-001-0.01, Mendocino, CA

Built 1958 Load: 30.8 t ADT: 4,200

U.S. HIGHWAY 101

Fair

Over: MARION LANE

01-MEN-101-R88.80, Mendocino, CA

Built 1970 Load: 30.8 t ADT: 6,100

E SIDE POTTER VLY

Fair

Over: BURRIGHT CREEK

3.8 MI N RTE 20, Mendocino, CA

Built 1935 Load: 30.8 t ADT: 1,821

MIDWAY ROAD

Fair

Over: UP RR & AMTRAK

1.2MI NO DAYTON-DURHAM HY, Butte, CA

Built 1975 Load: 30.8 t ADT: 5,636

Showing 4,801-4,850 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.