US Bridges

SR 25 over Sheep Creek

Fair

Stevens County, Washington · 34.3 N JCT US 395 · Structure no. 0002295A0000000

Built
1937
88 years old
Condition
Fair
inspected June 2023
Type
Tee Beam
Concrete Continuous
Length
98 ft
3 main spans
Daily traffic
624
2023 count
Owner
State
State Highway Agency

About this bridge

SR 25 over Sheep Creek is a concrete continuous tee beam carrying SR 25 over Sheep Creek in Stevens County, Washington. It was built in 1937, so it is 88 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 624 vehicles a day, roughly 36% of them trucks, projected to reach 783 by 2039. The structure is 98 ft (29.9 m) long and 31 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

Location

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CarriesSR 25
CrossesSheep Creek
Location34.3 N JCT US 395
RouteState Highway 25
CountyStevens County
StateWashington
Coordinates48.9409, -117.77214
Functional classRural Minor Arterial

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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJune 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 geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating32.2 US tons
Inventory rating25 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadH 15
Structure length98 ft (29.9 m)
Longest span57 ft (17.4 m)
Deck width31 ft (9.4 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic624 (2023)
Projected traffic783 by 2039
Trucks36%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed98.8 mi (159 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$1.3 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was SR 25 over Sheep Creek built?

It was built in 1937, making it 88 years old in 2025.

What condition is SR 25 over Sheep 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 June 2023.

How much traffic does SR 25 over Sheep Creek carry?

About 624 vehicles per day (2023 count), of which roughly 36% are trucks.

How long is SR 25 over Sheep Creek?

The structure is 98 ft (29.9 m) long with a longest span of 57 ft (17.4 m) and a deck 31 ft wide.

Who owns SR 25 over Sheep Creek?

It is owned by the State Highway Agency.