US Bridges

I-90 over BNSF Railroad

Poor

Adams County, Washington · 15.4 E JCT SR 261 · Structure no. 0008228C0000000

Built
1968
57 years old
Condition
Poor
inspected May 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
320 ft
3 main spans
Daily traffic
10,667
2023 count
Owner
State
State Highway Agency

About this bridge

I-90 over BNSF Railroad is a prestressed concrete stringer/multi-beam or girder carrying I-90 over BNSF Railroad in Adams County, Washington. It was built in 1968, so it is 57 years old, older than the Washington average of 49.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 10,667 vehicles a day, roughly 25% of them trucks, projected to reach 11,759 by 2039. The structure is 320 ft (97.4 m) long and 36 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesI-90
CrossesBNSF Railroad
Location15.4 E JCT SR 261
RouteInterstate 90
CountyAdams County
StateWashington
Coordinates47.24798, -118.10727
Functional classRural Principal Arterial - Interstate

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no 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 rating60 US tons
Inventory rating36 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length320 ft (97.4 m)
Longest span105 ft (32 m)
Deck width36 ft (11.1 m)
Roadway width33 ft (10.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10,667 (2023)
Projected traffic11,759 by 2039
Trucks25%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesRailroad
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 statusNot eligible for the National Register of Historic Places
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$6.4 million (2022 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was I-90 over BNSF Railroad built?

It was built in 1968, making it 57 years old in 2025.

What condition is I-90 over BNSF Railroad in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in May 2023.

How much traffic does I-90 over BNSF Railroad carry?

About 10,667 vehicles per day (2023 count), of which roughly 25% are trucks.

How long is I-90 over BNSF Railroad?

The structure is 320 ft (97.4 m) long with a longest span of 105 ft (32 m) and a deck 36 ft wide.

Who owns I-90 over BNSF Railroad?

It is owned by the State Highway Agency.