US Bridges

SR 27 over Spring Creek

Fair

Whitman County, Washington · 18.8 N JCT SR 272 · Structure no. 0013227A0000000

Built
1988
37 years old
Condition
Fair
inspected April 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
310 ft
4 main spans
Daily traffic
943
2023 count
Owner
State
State Highway Agency

About this bridge

SR 27 over Spring Creek is a prestressed concrete continuous stringer/multi-beam or girder carrying SR 27 over Spring Creek in Whitman County, Washington. It was built in 1988, so it is 37 years old, younger 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 943 vehicles a day, roughly 13% of them trucks, projected to reach 1,024 by 2039. The structure is 310 ft (94.5 m) long and 35 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

CarriesSR 27
CrossesSpring Creek
Location18.8 N JCT SR 272
RouteState Highway 27
Coordinates47.12553, -117.19906
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating34 US tons
Inventory rating26.1 US tons

Structure

MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20 + Mod
Structure length310 ft (94.5 m)
Longest span85 ft (25.9 m)
Deck width35 ft (10.7 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic943 (2023)
Projected traffic1,024 by 2039
Trucks13%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.1 mi (13 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$5 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was SR 27 over Spring Creek built?

It was built in 1988, making it 37 years old in 2025.

What condition is SR 27 over Spring 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 2024.

How much traffic does SR 27 over Spring Creek carry?

About 943 vehicles per day (2023 count), of which roughly 13% are trucks.

How long is SR 27 over Spring Creek?

The structure is 310 ft (94.5 m) long with a longest span of 85 ft (25.9 m) and a deck 35 ft wide.

Who owns SR 27 over Spring Creek?

It is owned by the State Highway Agency.