US Bridges

SR 194 over Union Flat Creek

Fair

Whitman County, Washington · 14.0 E of Almota · Structure no. 084902000000000

Built
1969
56 years old
Condition
Fair
inspected April 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
70 ft
1 main span
Daily traffic
314
2023 count
Owner
State
State Highway Agency

About this bridge

SR 194 over Union Flat Creek is a prestressed concrete stringer/multi-beam or girder carrying SR 194 over Union Flat Creek in Whitman County, Washington. It was built in 1969, so it is 56 years old, older than the Washington average of 49.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 314 vehicles a day, roughly 15% of them trucks, projected to reach 442 by 2039. The structure is 70 ft (21.3 m) long and 28 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

Open in Google Maps
CarriesSR 194
CrossesUnion Flat Creek
Location14.0 E of Almota
RouteState Highway 194
CountyWhitman County
StateWashington
Coordinates46.74292, -117.33372
Functional classRural Major Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
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 rating61.9 US tons
Inventory rating37 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadHS 20
Structure length70 ft (21.3 m)
Longest span69 ft (21 m)
Deck width28 ft (8.5 m)
Roadway width27 ft (8.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic314 (2023)
Projected traffic442 by 2039
Trucks15%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$964,000 (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was SR 194 over Union Flat Creek built?

It was built in 1969, making it 56 years old in 2025.

What condition is SR 194 over Union Flat Creek in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in April 2023.

How much traffic does SR 194 over Union Flat Creek carry?

About 314 vehicles per day (2023 count), of which roughly 15% are trucks.

How long is SR 194 over Union Flat Creek?

The structure is 70 ft (21.3 m) long with a longest span of 69 ft (21 m) and a deck 28 ft wide.

Who owns SR 194 over Union Flat Creek?

It is owned by the State Highway Agency.