US Bridges

SR 25 over Spokane River

Fair

Lincoln County, Washington · 23.4 N JCT US 2 · Structure no. 0002658A0000000

Built
1941
84 years old
Condition
Fair
inspected September 2024
Type
Truss - Thru
Steel
Length
958 ft
3 main spans
Daily traffic
887
2023 count
Owner
State
State Highway Agency

About this bridge

SR 25 over Spokane River is a steel truss - thru carrying SR 25 over Spokane River in Lincoln County, Washington. It was built in 1941, so it is 84 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 887 vehicles a day, roughly 13% of them trucks, projected to reach 930 by 2039. The structure is 958 ft (292 m) long and 26 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

Location

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CarriesSR 25
CrossesSpokane River
Location23.4 N JCT US 2
RouteState Highway 25
CountyLincoln County
StateWashington
Coordinates47.90825, -118.31556
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating37 US tons
Inventory rating22 US tons

Structure

Structure typeTruss - Thru
MaterialSteel
DeckConcrete, cast-in-place
Main spans3 (+5 approach)
Design loadH 15
Structure length958 ft (292 m)
Longest span432 ft (131.7 m)
Deck width26 ft (8 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deck15 ft (4.5 m)

Traffic and service

Average daily traffic887 (2023)
Projected traffic930 by 2039
Trucks13%
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 statusListed on the National Register of Historic Places
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$14.1 million (2022 estimate)
NavigationNavigation control on waterway (bridge permit required)

Frequently asked questions

When was SR 25 over Spokane River built?

It was built in 1941, making it 84 years old in 2025.

What condition is SR 25 over Spokane River 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 September 2024.

How much traffic does SR 25 over Spokane River carry?

About 887 vehicles per day (2023 count), of which roughly 13% are trucks.

How long is SR 25 over Spokane River?

The structure is 958 ft (292 m) long with a longest span of 432 ft (131.7 m) and a deck 26 ft wide.

Who owns SR 25 over Spokane River?

It is owned by the State Highway Agency.