US Bridges

SR 904 over I-90

FairPosted for load

Spokane County, Washington · 16.9 E JCT I-90 · Structure no. 0007784A0000000

Built
1966
59 years old
Condition
Fair
inspected October 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
344 ft
5 main spans
Daily traffic
8,606
2023 count
Owner
State
State Highway Agency

About this bridge

SR 904 over I-90 is a prestressed concrete continuous stringer/multi-beam or girder carrying SR 904 over I-90 in Spokane County, Washington. It was built in 1966, so it is 59 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 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. Its operating status is: posted for load restriction.

It carries about 8,606 vehicles a day, roughly 5% of them trucks, projected to reach 11,628 by 2039. The structure is 344 ft (104.9 m) long and 34 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesSR 904
CrossesI-90
Location16.9 E JCT I-90
RouteState Highway 904
CountySpokane County
StateWashington
Coordinates47.56524, -117.59365
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.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourBridge not over waterway
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating26.1 US tons
Inventory rating20 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans5
Design loadHS 20 + Mod
Structure length344 ft (104.9 m)
Longest span76 ft (23.2 m)
Deck width34 ft (10.5 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic8,606 (2023)
Projected traffic11,628 by 2039
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.2 mi (2 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$7 million (2022 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was SR 904 over I-90 built?

It was built in 1966, making it 59 years old in 2025.

What condition is SR 904 over I-90 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 2023.

How much traffic does SR 904 over I-90 carry?

About 8,606 vehicles per day (2023 count), of which roughly 5% are trucks.

How long is SR 904 over I-90?

The structure is 344 ft (104.9 m) long with a longest span of 76 ft (23.2 m) and a deck 34 ft wide.

Who owns SR 904 over I-90?

It is owned by the State Highway Agency.