County profile · official public datasets

Asotin County, WA

29 public highway bridges tracked in the FHWA National Bridge Inventory: 51.7% rated Good, 41.4% Fair, 6.9% Poor.

29
Public bridges
51.7%
Good condition
6.9%
Poor condition

The verdict

According to the Federal Highway Administration's 2024 National Bridge Inventory.

Asotin County posts a higher-than-median Poor-condition share among rated counties in the state across rated county bridge inventory.

25th
of 39 on Poor share
6.9%
Poor-condition share
29
public highway bridges
1976
avg year built

Poor is an FHWA condition category from the lowest applicable component rating (4 or below), not a live crossing-safety or closure decision. Rankings cover counties with at least five public highway bridges.

Asotin County Bridge Snapshot

According to the Federal Highway Administration's 2024 National Bridge Inventory, Asotin County ranks #25 of 39 Washington counties with at least 5 public highway bridges on Poor-condition share (lower share ranks better; currently 6.9%). Asotin County, Washington contains 29 public highway bridges. Roughly 51.7% are rated “Good,” 41.4% “Fair,” and 6.9% “Poor.” Poor means the lowest applicable deck, superstructure, substructure, or culvert rating is 4 or below on the 0–9 NBI scale. It is a condition category, not a live safety or closure decision.

Responsible agencies inspect covered bridges on risk-based intervals under current NBIS rules and submit inventory data to FHWA annually. The list below shows every NBI-tracked bridge in the county. Use the “Sort by” controls to change the ordering, and click any row for its reported inspection date, traffic count, and condition fields.

Source: FHWA National Bridge Inventory. See methodology for full definitions.

Total bridges

29

Public highway bridges in Asotin County

Good condition

51.7%

15 of 29 rated 7-9

Fair condition

41.4%

12 of 29 rated 5-6

Poor condition

6.9%

2 of 29 rated 4 or below

In-state Poor-share rank

#25 of 39

Among Washington counties with 5+ bridges, lower share ranks better

Condition distribution

Share of 29 NBI-tracked bridges by lowest applicable component rating.

Good
51.7% (15)
Fair
41.4% (12)
Poor
6.9% (2)

Asotin County's Poor-condition bridges carry 3 vehicle crossings a day

That is 0% of the county's reported daily bridge traffic on 6.9% of its bridges: Poor-condition structures carry less traffic than their share of the inventory. Each Poor bridge averages 2 crossings a day against 2,057 for a Good-condition one. A Poor rating is a condition category, not a closure or a live safety judgement; it means the lowest applicable component rating is 4 or below.

Computed over the 29 of 29 bridges in this county that report an average daily traffic count. Source: FHWA National Bridge Inventory, 2024 release.

41.4% of Asotin County's bridges have passed the 50-year mark

12 of the 29 bridges with a recorded construction year were built in 1974 or earlier. Age alone is not a defect: a well-maintained older bridge can rate Good, and 51.7% of this county's inventory does. Even so, this older cohort is the population from which future Poor ratings are drawn, which is why the age profile below matters alongside the condition split above.

Cutoff derives from the 2024 release year minus a 50-year design life. Source: FHWA National Bridge Inventory, 2024 release.

One structure carries 66.7% of the county's Poor-condition bridge traffic

COUNTY ROAD 2850 over TEN MILE CREEK, built 1972, carries 2 vehicles a day, the most of any Poor-rated structure here. The county's Poor-condition exposure is concentrated rather than evenly spread, so the 2-bridge count understates how much of the daily burden sits on a single crossing.

Share is of the 3 daily crossings on Poor-rated bridges that report a traffic count. Source: FHWA National Bridge Inventory, 2024 release.

When Asotin County's bridges were built

29 bridges with a recorded construction year, grouped by decade

bridges

What this shows Construction peaked in the 1970s, when 8 of the county's bridges still in the inventory were built, which is 27.6% of those with a recorded year. That cohort is now 45 to 54 years old in the 2024 inventory. Its average build year (1976) matches the Washington average (1975).

Source FHWA National Bridge Inventory (year built) As of 2024 NBI release

How Asotin County compares with Washington's closest counties by inventory size

The 5 Washington counties nearest Asotin County in number of bridges, with their condition splits. Its 6.9% Poor share is the 4th-lowest of these 6. Its average build year of 1976 against a peer-group mean of 1973 is in line with the group.

Showing the 5 closest of 38 Washington counties eligible for comparison.

Bridge inventory size and condition shares for Asotin County and the 5 Washington counties closest to it in inventory size
County Bridges Poor
Ferry County 53 9.4%
Douglas County 40 12.5%
Wahkiakum County 36 2.8%
Asotin County (this page) 29 6.9%
San Juan County 13 0%
Island County 7 0%

Each share is of that county's own total tracked bridges; peers are the counties with 5 or more bridges whose inventory size is closest to Asotin County's. Source: FHWA National Bridge Inventory, 2024 release.

Nationwide counties with similar inventory size or average build year

Two NBI-derived peer sets for Asotin County, both outside Washington so the neighborhoods are not the same-state size table above.

Similar inventory size

Nearest county inventories outside WA (29 bridges here).

Similar average build year

Nearest mean year-built outside WA (1976 here).

Source: FHWA National Bridge Inventory, 2024 release. Peers floor at 10 bridges so stub inventories cannot own the match.

All 29 Good 15 Fair 12 Poor 2

All bridges (29)

SECOND ST.

Fair

Over: ASOTIN CREEK

0.0 E FAS RT F021, Asotin, WA

Built 1920 Load: 13.6 t ADT: 500

US 12

Fair

Over: SNAKE RIVER

0.1 E JCT SR 129, Asotin, WA

Built 1939 Load: 19.0 t ADT: 24,770

COUNTY ROAD 1050

Fair

Over: ASOTIN CREEK

0.1S JCT CO RD 1100, Asotin, WA

Built 1951 Load: 24.9 t ADT: 230

COUNTY ROAD 1100

Fair

Over: MAGUIRE GULCH

MAGUIRE GULCH, Asotin, WA

Built 1948 Load: 26.6 t ADT: 412

Park Access Road

Fair

Over: Snake River

Chief Timothy Park, Asotin, WA

Built 1975 Load: 27.2 t ADT: 150

SR 129

Fair

Over: GRANDE RONDE RIVER

4.4 N OREGON, Asotin, WA

Built 1941 Load: 29.0 t ADT: 222

FLESHMAN WAY

Fair

Over: SNAKE RIVER

0.1 E JCT SR 129, Asotin, WA

Built 1982 Load: 32.7 t ADT: 21,000

US 12

Fair

Over: ALPOWA CR

3.0 E GARFIELD CO, Asotin, WA

Built 1975 Load: 37.2 t ADT: 2,914

SR 128

Fair

Over: SNAKE RIVER

0.2 E JCT US 12, Asotin, WA

Built 1979 Load: 37.2 t ADT: 4,999

COUNTY ROAD 2090

Fair

Over: JOSEPH CREEK

1.0 MI NO ORE LINE, Asotin, WA

Built 1972 Load: 43.1 t ADT: 7

COUNTY ROAD 1750

Fair

Over: SO FORK ASOTIN CREEK

3.3 MI SO JCT RD. 1100, Asotin, WA

Built 1957 Load: 45.7 t ADT: 1

COUNTY ROAD 1000

Fair

Over: Cottonwood Creek

2.25 E. Cougar Cr. Rd., Asotin, WA

Built 2021 Load: 55.1 t ADT: 78

SR 129

Good

Over: ASOTIN CREEK

36.7 N OREGON, Asotin, WA

Built 1956 Load: 18.8 t ADT: 4,854

COUNTY ROAD 2090

Good

Over: GRANDE RONDE RIVER

2.5MI SW ROGERSBURG, Asotin, WA

Built 1983 Load: 23.7 t ADT: 73

COUNTY ROAD 1950

Good

Over: ASOTIN CREEK

0.09 MI SO JCT 1050, Asotin, WA

Built 1975 Load: 26.6 t ADT: 125

COUNTY ROAD 1000

Good

Over: WENATCHEE CREEK

9.73 MILES WEST OF SR129, Asotin, WA

Built 1955 Load: 27.5 t ADT: 48

FLESHMAN WAY

Good

Over: STATE ROUTE 129

JCT SR 129, Asotin, WA

Built 1982 Load: 27.5 t ADT: 17,789

SR 129

Good

Over: RATTLESNAKE CREEK

5.8 N OREGON, Asotin, WA

Built 2015 Load: 29.5 t ADT: 282

COUNTY ROAD 2090

Good

Over: TEN MILE CRK

0.07 MI SE JCT 2850, Asotin, WA

Built 2011 Load: 29.5 t ADT: 501

13TH STREET

Good

Over: FLESHMAN WAY

0.1 MI NO OF 16TH AVE, Asotin, WA

Built 1997 Load: 32.1 t ADT: 6,167

COSTLEY LANE

Good

Over: ASOTIN CREEK

JCT BAUMEISTER DR, Asotin, WA

Built 1978 Load: 32.7 t ADT: 264

COUNTY ROAD 2010

Good

Over: GEORGE CREEK

1.2 MI SO JCT RD 1050, Asotin, WA

Built 1992 Load: 34.7 t ADT: 24

COUNTY ROAD 2090

Good

Over: COUSE CREEK

0.07 MI SO JCT 2040, Asotin, WA

Built 1972 Load: 36.3 t ADT: 281

COUNTY ROAD 2090

Good

Over: FISHERS GULCH

7.4 MI SO JCT RD 2040, Asotin, WA

Built 2009 Load: 49.9 t ADT: 176

COUNTY ROAD 2090

Good

Over: JOSEPH CREEK

3.5 MILES N ORE LN, Asotin, WA

Built 1983 Load: 52.2 t ADT: 32

COUNTY ROAD 1100

Good

Over: ASOTIN CREEK

JCT LICK CREEK ROAD, Asotin, WA

Built 1992 Load: 52.5 t ADT: 12

SR 129

Good

Over: BUFORD CREEK

0.9 N OREGON, Asotin, WA

Built 2019 Load: 96.9 t ADT: 222

COUNTY ROAD 2850

Poor

Over: TEN MILE CREEK

1.05 MI SW JCT RD 2090, Asotin, WA

Built 1972 Load: 18.8 t ADT: 2

COUNTY ROAD 2040

Poor

Over: COUSE CREEK

3.12 MI SW JCT RD 2090, Asotin, WA

Built 1957 Load: 33.0 t ADT: 1

Read our methodology - how this data is sourced, computed, and verified.

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Data sourced from official public datasets. See our methodology for details. Retrieved and formatted by PlainBridges

Every figure on PlainBridges is rendered directly from federal source data, no number is typed in by an editor. This page draws directly on federal source data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. NBI condition categories reflect the latest reported inventory record, not a live safety, closure, or travel decision.