US Bridges

COUNTRYMAN/3185 over Cottonwood Creek

Poor

Whitman County, Washington · 1.12 MI N SR 23 · Structure no. 083503000000000

Built
1922
103 years old, rebuilt 1957
Condition
Poor
inspected October 2024
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
50 ft
2 main spans
Daily traffic
50
2022 count
Owner
County
County Highway Agency

About this bridge

COUNTRYMAN/3185 over Cottonwood Creek is a wood or timber stringer/multi-beam or girder carrying COUNTRYMAN/3185 over Cottonwood Creek in Whitman County, Washington. It was built in 1922 and reconstructed in 1957, so it is 103 years old, older than the Washington average of 49.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 3 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: open, would be posted or closed except for temporary shoring.

It carries about 50 vehicles a day, roughly 23% of them trucks, projected to reach 55 by 2042. The structure is 50 ft (15.2 m) long and 20 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

CarriesCOUNTRYMAN/3185
CrossesCottonwood Creek
Location1.12 MI N SR 23
RouteCounty Highway 31850
Coordinates47.1143, -117.62073
Functional classRural Local

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure3 SeriousLoss of section, deterioration, spalling or scour have seriously affected primary structural components.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2024
Inspection intervalevery 12 months
Operating statusOpen, would be posted or closed except for temporary shoring
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation2: Basically intolerable, requiring high priority of replacement
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment3: Basically intolerable, requiring high priority of corrective action
Operating rating12 US tons
Inventory rating6.9 US tons

Structure

MaterialWood or Timber
DeckWood or timber
Main spans2
Design loadH 15
Structure length50 ft (15.2 m)
Longest span26 ft (7.9 m)
Deck width20 ft (6.1 m)
Roadway width19 ft (5.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic50 (2022)
Projected traffic55 by 2042
Trucks23%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.8 mi (159 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$2.2 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was COUNTRYMAN/3185 over Cottonwood Creek built?

It was built in 1922, making it 103 years old in 2025. It was reconstructed in 1957.

What condition is COUNTRYMAN/3185 over Cottonwood Creek in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in October 2024.

How much traffic does COUNTRYMAN/3185 over Cottonwood Creek carry?

About 50 vehicles per day (2022 count), of which roughly 23% are trucks.

How long is COUNTRYMAN/3185 over Cottonwood Creek?

The structure is 50 ft (15.2 m) long with a longest span of 26 ft (7.9 m) and a deck 20 ft wide.

Who owns COUNTRYMAN/3185 over Cottonwood Creek?

It is owned by the County Highway Agency.