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

HIGGINS PURISIMA R

Fair

Over: MILLS CREEK

1.5 MI E OF MAIN ST, San Mateo, CA

Built 1914 Load: 18.5 t ADT: 477

PESCADERO RD

Fair

Over: HONSINGER CREEK

2.6 MI E SR 1/@ CLOVRDALE, San Mateo, CA

Built 1957 Load: 18.5 t ADT: 1,084

GERI LANE

Fair

Over: SANCHEZ CREEK

.2 MI SW OF FOREST VIEW, San Mateo, CA

Built 1930 Load: 18.5 t ADT: 1,000

GREEN VALLEY RD

Fair

Over: CORRALITOS CREEK

0.3 MI NE OF FREEDOM BLVD, Santa Cruz, CA

Built 1947 Load: 18.5 t ADT: 22,000

SCOTLAND DR

Fair

Over: SARATOGA CREEK

NEAR SARATOGA AVE, Santa Clara, CA

Built 1958 Load: 18.5 t ADT: 4,220

COOPERSTOWN ROAD

Fair

Over: JOHNSON CREEK

1.5 MI NW LA GRANGE RD, Stanislaus, CA

Built 1922 Load: 18.5 t ADT: 35

STATE ROUTE 165

Fair

Over: DELTA-MENDOTA CANAL

10-MER-165-3.33, Merced, CA

Built 1950 Load: 18.5 t ADT: 1,800

VOORHEES ROAD

Fair

Over: DEADMAN CREEK

1.1 MI W PLAINSBURG RD, Merced, CA

Built 1938 Load: 18.5 t ADT: 56

BERT CRANE ROAD

Fair

Over: BEAR CREEK

0.6 MI S LISBON STREET, Merced, CA

Built 1945 Load: 18.5 t ADT: 80

COTTONWOOD ROAD

Fair

Over: DELTA-MENDOTA CANAL

400 WEST OF ORCHARD ROAD, Merced, CA

Built 1956 Load: 18.5 t ADT: 15

GUN CLUB ROAD

Fair

Over: MUD SLOUGH

1.9 MI E SANTA FE GRADE, Merced, CA

Built 1975 Load: 18.5 t ADT: 22

MCCABE ROAD

Fair

Over: CALIFORNIA AQUEDUCT

2.6 MI WEST OF I-5, Merced, CA

Built 1968 Load: 18.5 t ADT: 50

KAHLON ROAD

Fair

Over: DUCK SLOUGH OVERFLOW

1.9 MI SE OF E MISSION RD, Merced, CA

Built 1914 Load: 18.5 t ADT: 384

BUCK MEADOWS ROAD

Fair

Over: MOORE CREEK

1.2 MI N/O GREELEY HILL R, Mariposa, CA

Built 1937 Load: 18.5 t ADT: 610

N FRESNO ST

Fair

Over: DRY CREEK CANAL

SOUTH OF MCKINLEY AVE, Fresno, CA

Built 1958 Load: 18.5 t ADT: 11,758

TOLLHOUSE RD

Fair

Over: DRY CREEK

0.1 M N/O PITTMAN HILL RD, Fresno, CA

Built 1925 Load: 18.5 t ADT: 1,600

W PANOCHE ROAD

Fair

Over: SILVER CREEK

5.0 MI. SOUTHWEST OF I-5, Fresno, CA

Built 1941 Load: 18.5 t ADT: 900

N FANCHER AVE

Fair

Over: FANCHER CREEK CANAL

SOUTH OF MCKINLEY AV, Fresno, CA

Built 1948 Load: 18.5 t ADT: 1,180

W BARSTOW AVE

Fair

Over: HERNDON CANAL

AT WESTLAWN AVE, Fresno, CA

Built 1920 Load: 18.5 t ADT: 500

CATTLEMEN ROAD

Fair

Over: SALINAS RIVER

E OF US 101 NR SAN ARDO, Monterey, CA

Built 1929 Load: 18.5 t ADT: 1,500

AVENAL CUT-OFF RD

Fair

Over: STATE ROUTE 198

06-KIN-198-4.99, Kings, CA

Built 1963 Load: 18.5 t ADT: 5,000

FARGO AVE

Fair

Over: LAST CHANCE DITCH

0.5 MI W OF 13TH AVE, Kings, CA

Built 1955 Load: 18.5 t ADT: 1,708

STATE ROUTE 245

Fair

Over: COTTONWOOD CREEK

06-TUL-245-20.80, Tulare, CA

Built 1923 Load: 18.5 t ADT: 250

STATE ROUTE 46

Fair

Over: MAIN DRAIN CANAL

06-KER-046-34.63, Kern, CA

Built 1956 Load: 18.5 t ADT: 6,100

SAN MARCOS RD

Fair

Over: MARIA YGNACIA CREEK

0.5 MI N CATHEDRAL OAKS, Santa Barbara, CA

Built 1956 Load: 18.5 t ADT: 4,090

WHITTIER BLVD

Fair

Over: RIO HONDO

0.1MI E/O BLUFF RD, Los Angeles, CA

Built 1921 Load: 18.5 t ADT: 24,813

N 1ST AVENUE

Fair

Over: MOJAVE RIVER OVERFLOW

0.1 MI N OF IRWIN RD., San Bernardino, CA

Built 1939 Load: 18.5 t ADT: 3,400

GRAHAM STREET

Fair

Over: E GRDN GRVE-WNTERBG CHAN

0.4 MI S/O WARNER AVE, Orange, CA

Built 1961 Load: 18.5 t ADT: 8,000

BONITA GLEN TERRAC

Fair

Over: SWEETWATER RIV TRIBUTARY

500FT S/O CENTRAL AVE, San Diego, CA

Built 1972 Load: 18.5 t ADT: 1,700

NO DATA ENTERED

Fair

Over: STRAWBERRY CREEK

NO DATA ENTERED, El Dorado, CA

Built 1968 Load: 18.5 t ADT: 15

NACIMIENTO RD

Fair

Over: STONEY CREEK RESVR INLET

SW S. MIGUELITO L S12A/25, Monterey, CA

Built 1955 Load: 18.5 t ADT: 8

O&M Canal Roads

Fair

Over: All-American Canal

11 miles NE of Yuma, Imperial, CA

Built 1935 Load: 18.8 t ADT: 50

O&M Service Roads

Fair

Over: All-American Canal

8.3 miles north of Yuma, Imperial, CA

Built 1960 Load: 18.8 t ADT: 50

WHITLOW ROAD

Fair

Over: SONOMA CREEK #2

2.4 MI E OF ELK CREEK RD, Humboldt, CA

Built 1966 Load: 18.8 t ADT: 53

WHITLOW ROAD

Fair

Over: SONOMA CREEK #1

2.2 MI E OF ELK CREEK RD, Humboldt, CA

Built 1966 Load: 18.8 t ADT: 53

FOREST ROAD

Fair

Over: SOUTH FORK EEL RIVER

0.1 MI W/O REDWOOD DR, Humboldt, CA

Built 1965 Load: 18.8 t ADT: 110

SOUTH FORK ROAD

Fair

Over: PELLETREAU CREEK

2.3 MI N HYAMPOM RD, Trinity, CA

Built 1967 Load: 18.8 t ADT: 160

INTERSTATE 5 SB

Fair

Over: EAST CYPRESS AVE

02-SHA-005-R14.44-RDG, Shasta, CA

Built 1965 Load: 18.8 t ADT: 26,500

BLAND ROAD

Fair

Over: NORTH FORK WILSON CREEK

2.32 MI S PLATINA RD, Shasta, CA

Built 1972 Load: 18.8 t ADT: 60

BEAR MOUNTAIN ROAD

Fair

Over: DEEP HOLE CREEK

100 FT S/O BERNARD WAY, Shasta, CA

Built 1940 Load: 18.8 t ADT: 2,632

SACRAMENTO DR

Fair

Over: OLNEY CREEK

0.5 MI E OF SR273, Shasta, CA

Built 1954 Load: 18.8 t ADT: 2,865

LUCE GINSWOLD ROAD

Fair

Over: DRY FORK COTTONWOOD CRK

0.3 MI N BOWMAN RD, Tehama, CA

Built 1960 Load: 18.8 t ADT: 49

LEININGER ROAD

Fair

Over: DEER CREEK

1.0 MI N ORCHARD ROAD, Tehama, CA

Built 1930 Load: 18.8 t ADT: 232

CRAIG AVENUE

Fair

Over: CRAIG CREEK

0.45 MI NW OF ELECTRIC AV, Tehama, CA

Built 1937 Load: 18.8 t ADT: 110

GRNVILE WOLF CK RD

Fair

Over: WOLF CREEK

150 FT SOUTH OF SH 89, Plumas, CA

Built 1961 Load: 18.8 t ADT: 10

U.S. HIGHWAY 101

Fair

Over: MCNAB CREEK

01-MEN-101-15.94, Mendocino, CA

Built 1942 Load: 18.8 t ADT: 13,800

STATE ROUTE 20

Fair

Over: CHAMBERLAIN CREEK

01-MEN-020-17.29, Mendocino, CA

Built 1948 Load: 18.8 t ADT: 2,600

MOUNTAIN HOUSE RD

Fair

Over: CUMMISKEY CREEK

2.2 MI N SR 128, Mendocino, CA

Built 1913 Load: 18.8 t ADT: 1,252

RG STATE PARK ROAD

Fair

Over: RUSSIAN GULCH

RUSSIAN GULCH STATE PARK, Mendocino, CA

Built 1953 Load: 18.8 t ADT: 15,000

CO RD #45

Fair

Over: SOUTH FORK WILLOW CREEK

0.25 MI W OF 99 W, Glenn, CA

Built 1965 Load: 18.8 t ADT: 27

Showing 1,501-1,550 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.