US Bridges

I-90 over Canyon RD & BNSF RR

Fair

Kittitas County, Washington · 3.3 E JCT US 97 · Structure no. 0008200H0000000

Built
1968
57 years old
Condition
Fair
inspected October 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
457 ft
5 main spans
Daily traffic
15,658
2023 count
Owner
State
State Highway Agency

About this bridge

I-90 over Canyon RD & BNSF RR is a prestressed concrete continuous stringer/multi-beam or girder carrying I-90 over Canyon RD & BNSF RR in Kittitas 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 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 15,658 vehicles a day, roughly 23% of them trucks, projected to reach 19,097 by 2039. The structure is 457 ft (139.3 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
CrossesCanyon RD & BNSF RR
Location3.3 E JCT US 97
RouteInterstate 90
CountyKittitas County
StateWashington
Coordinates46.97378, -120.54183
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 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 rating24.7 US tons
Inventory rating19 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans5
Design loadHS 20 + Mod
Structure length457 ft (139.3 m)
Longest span114 ft (34.7 m)
Deck width36 ft (11.1 m)
Roadway width33 ft (10.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic15,658 (2023)
Projected traffic19,097 by 2039
Trucks23%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway and railroad
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$7.6 million (2022 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was I-90 over Canyon RD & BNSF RR built?

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

What condition is I-90 over Canyon RD & BNSF RR 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 I-90 over Canyon RD & BNSF RR carry?

About 15,658 vehicles per day (2023 count), of which roughly 23% are trucks.

How long is I-90 over Canyon RD & BNSF RR?

The structure is 457 ft (139.3 m) long with a longest span of 114 ft (34.7 m) and a deck 36 ft wide.

Who owns I-90 over Canyon RD & BNSF RR?

It is owned by the State Highway Agency.