US Bridges

FARMINGTON/1000 over Branch Willow Creek

Good

Whitman County, Washington · 5.43 MI S SR 27 · Structure no. 086577000000000

Built
2000
25 years old
Condition
Good
inspected November 2024
Type
Culvert
Steel
Length
25 ft
2 main spans
Daily traffic
461
2020 count
Owner
County
County Highway Agency

About this bridge

FARMINGTON/1000 over Branch Willow Creek is a steel culvert carrying FARMINGTON/1000 over Branch Willow Creek in Whitman County, Washington. It was built in 2000, so it is 25 years old, younger than the Washington average of 49.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 461 vehicles a day, roughly 25% of them trucks, projected to reach 470 by 2039. The structure is 25 ft (7.6 m) long and 50 ft wide. If it were closed, the detour would be 19.9 mi (32 km).

Location

Open in Google Maps
CarriesFARMINGTON/1000
CrossesBranch Willow Creek
Location5.43 MI S SR 27
RouteCounty Highway 10000
CountyWhitman County
StateWashington
Coordinates47.15662, -117.08463
Functional classRural Major Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Channel and channel protection8 Very GoodNo problems noted.
Culvert7 GoodSome minor problems.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating106.8 US tons
Inventory rating101.4 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans2
Design loadHS 20
Structure length25 ft (7.6 m)
Longest span10 ft (3 m)
Deck width50 ft (15.2 m)
Roadway width50 ft (15.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic461 (2020)
Projected traffic470 by 2039
Trucks25%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed19.9 mi (32 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedWidening with deck rehabilitation or replacement
Estimated improvement cost$300,000
NavigationNo navigation control on waterway

Frequently asked questions

When was FARMINGTON/1000 over Branch Willow Creek built?

It was built in 2000, making it 25 years old in 2025.

What condition is FARMINGTON/1000 over Branch Willow Creek in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in November 2024.

How much traffic does FARMINGTON/1000 over Branch Willow Creek carry?

About 461 vehicles per day (2020 count), of which roughly 25% are trucks.

How long is FARMINGTON/1000 over Branch Willow Creek?

The structure is 25 ft (7.6 m) long with a longest span of 10 ft (3 m) and a deck 50 ft wide.

Who owns FARMINGTON/1000 over Branch Willow Creek?

It is owned by the County Highway Agency.