US Bridges

WARNER/1100 over Willow Creek

Good

Whitman County, Washington · 4.15 MI NE SR 27 · Structure no. 086857000000000

Built
2002
23 years old
Condition
Good
inspected November 2024
Type
Tee Beam
Prestressed Concrete
Length
95 ft
1 main span
Daily traffic
73
2020 count
Owner
County
County Highway Agency

About this bridge

WARNER/1100 over Willow Creek is a prestressed concrete tee beam carrying WARNER/1100 over Willow Creek in Whitman County, Washington. It was built in 2002, so it is 23 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 73 vehicles a day, roughly 25% of them trucks, projected to reach 73 by 2039. The structure is 95 ft (29 m) long and 34 ft wide. If it were closed, the detour would be 21.7 mi (35 km).

CarriesWARNER/1100
CrossesWillow Creek
Location4.15 MI NE SR 27
RouteCounty Highway 11000
Coordinates47.15267, -117.13992
Functional classRural Minor Collector

Condition and inspection

Good

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry8: Equal to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating40 US tons
Inventory rating27.1 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadHS 25 or greater
Structure length95 ft (29 m)
Longest span94 ft (28.7 m)
Deck width34 ft (10.5 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic73 (2020)
Projected traffic73 by 2039
Trucks25%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed21.7 mi (35 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$3.8 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was WARNER/1100 over Willow Creek built?

It was built in 2002, making it 23 years old in 2025.

What condition is WARNER/1100 over 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 WARNER/1100 over Willow Creek carry?

About 73 vehicles per day (2020 count), of which roughly 25% are trucks.

How long is WARNER/1100 over Willow Creek?

The structure is 95 ft (29 m) long with a longest span of 94 ft (28.7 m) and a deck 34 ft wide.

Who owns WARNER/1100 over Willow Creek?

It is owned by the County Highway Agency.