US Bridges

E-Ns Ramp I-90 over Burlington-Northern RR

Good

Adams County, Washington · 12.9 E JCT SR 21 · Structure no. 0012782A0000000

Built
1985
40 years old
Condition
Good
inspected August 2022
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
180 ft
3 main spans
Daily traffic
333
2023 count
Owner
State
State Highway Agency

About this bridge

E-Ns Ramp I-90 over Burlington-Northern RR is a prestressed concrete continuous stringer/multi-beam or girder carrying E-Ns Ramp I-90 over Burlington-Northern RR in Adams County, Washington. It was built in 1985, so it is 40 years old, younger than the Washington average of 49.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 333 vehicles a day, roughly 23% of them trucks, projected to reach 378 by 2039. The structure is 180 ft (54.9 m) long and 29 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

Location

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CarriesE-Ns Ramp I-90
CrossesBurlington-Northern RR
Location12.9 E JCT SR 21
RouteInterstate 90
CountyAdams County
StateWashington
Coordinates47.11067, -118.40072
Functional classRural Principal Arterial - Interstate

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionAugust 2022
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating89.9 US tons
Inventory rating53 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length180 ft (54.9 m)
Longest span60 ft (18.3 m)
Deck width29 ft (8.8 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic333 (2023)
Projected traffic378 by 2039
Trucks23%
Lanes on structure1
Traffic directionOne-way traffic
CarriesHighway
CrossesRailroad
Detour if closed9.9 mi (16 km)
TollOn a free road
National Highway SystemYes

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$2.4 million (2022 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was E-Ns Ramp I-90 over Burlington-Northern RR built?

It was built in 1985, making it 40 years old in 2025.

What condition is E-Ns Ramp I-90 over Burlington-Northern RR in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in August 2022.

How much traffic does E-Ns Ramp I-90 over Burlington-Northern RR carry?

About 333 vehicles per day (2023 count), of which roughly 23% are trucks.

How long is E-Ns Ramp I-90 over Burlington-Northern RR?

The structure is 180 ft (54.9 m) long with a longest span of 60 ft (18.3 m) and a deck 29 ft wide.

Who owns E-Ns Ramp I-90 over Burlington-Northern RR?

It is owned by the State Highway Agency.