US Bridges

I-90 over Sprague Ave

Fair

Spokane County, Washington · 4.3 E JCT US 2 · Structure no. 0015438A0000000

Built
2000
25 years old
Condition
Fair
inspected October 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
220 ft
2 main spans
Daily traffic
51,385
2023 count
Owner
State
State Highway Agency

About this bridge

I-90 over Sprague Ave is a prestressed concrete continuous stringer/multi-beam or girder carrying I-90 over Sprague Ave in Spokane County, Washington. It was built in 2000, so it is 25 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 51,385 vehicles a day, roughly 7% of them trucks, projected to reach 67,961 by 2039. The structure is 220 ft (67.1 m) long and 71 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesI-90
CrossesSprague Ave
Location4.3 E JCT US 2
RouteInterstate 90
CountySpokane County
StateWashington
Coordinates47.65672, -117.32192
Functional classUrban Principal Arterial - Interstate

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.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating81 US tons
Inventory rating48.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 25 or greater
Structure length220 ft (67.1 m)
Longest span132 ft (40.2 m)
Deck width71 ft (21.6 m)
Roadway width68 ft (20.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic51,385 (2023)
Projected traffic67,961 by 2039
Trucks7%
Lanes on structure4
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

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$7.3 million (2022 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was I-90 over Sprague Ave built?

It was built in 2000, making it 25 years old in 2025.

What condition is I-90 over Sprague Ave 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 October 2024.

How much traffic does I-90 over Sprague Ave carry?

About 51,385 vehicles per day (2023 count), of which roughly 7% are trucks.

How long is I-90 over Sprague Ave?

The structure is 220 ft (67.1 m) long with a longest span of 132 ft (40.2 m) and a deck 71 ft wide.

Who owns I-90 over Sprague Ave?

It is owned by the State Highway Agency.