US Bridges

Uniontown East over Thorn Creek

Good

Whitman County, Washington · 2.19 MI NE SR 195 · Structure no. 088334000000000

Built
2011
14 years old
Condition
Good
inspected October 2023
Type
Slab
Prestressed Concrete
Length
32 ft
1 main span
Daily traffic
564
2021 count
Owner
County
County Highway Agency

About this bridge

Uniontown East over Thorn Creek is a prestressed concrete slab carrying Uniontown East over Thorn Creek in Whitman County, Washington. It was built in 2011, so it is 14 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 564 vehicles a day, roughly 25% of them trucks, projected to reach 564 by 2044. The structure is 32 ft (9.8 m) long and 28 ft wide. If it were closed, the detour would be 46 mi (74 km).

CarriesUniontown East
CrossesThorn Creek
Location2.19 MI NE SR 195
RouteCounty Highway 94100
Coordinates46.56093, -117.05965
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
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating41.8 US tons
Inventory rating26.1 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadHL 93
Structure length32 ft (9.8 m)
Longest span31 ft (9.4 m)
Deck width28 ft (8.5 m)
Roadway width28 ft (8.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic564 (2021)
Projected traffic564 by 2044
Trucks25%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed46 mi (74 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$1.5 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Uniontown East over Thorn Creek built?

It was built in 2011, making it 14 years old in 2025.

What condition is Uniontown East over Thorn 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 October 2023.

How much traffic does Uniontown East over Thorn Creek carry?

About 564 vehicles per day (2021 count), of which roughly 25% are trucks.

How long is Uniontown East over Thorn Creek?

The structure is 32 ft (9.8 m) long with a longest span of 31 ft (9.4 m) and a deck 28 ft wide.

Who owns Uniontown East over Thorn Creek?

It is owned by the County Highway Agency.