US Bridges

I-90 over RD N NE & RR

Fair

Grant County, Washington · 2.4 E JCT SR 17 · Structure no. 0006093A0000000

Built
1959
66 years old
Condition
Fair
inspected June 2024
Type
Slab
Concrete Continuous
Length
209 ft
4 main spans
Daily traffic
6,497
2023 count
Owner
State
State Highway Agency

About this bridge

I-90 over RD N NE & RR is a concrete continuous slab carrying I-90 over RD N NE & RR in Grant County, Washington. It was built in 1959, so it is 66 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 6,497 vehicles a day, roughly 23% of them trucks, projected to reach 8,131 by 2039. The structure is 209 ft (63.7 m) long and 34 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesI-90
CrossesRD N NE & RR
Location2.4 E JCT SR 17
RouteInterstate 90
CountyGrant County
StateWashington
Coordinates47.09436, -119.19408
Functional classRural 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 inspectionJune 2024
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 rating26.8 US tons
Inventory rating20.7 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length209 ft (63.7 m)
Longest span55 ft (16.8 m)
Deck width34 ft (10.5 m)
Roadway width31 ft (9.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,497 (2023)
Projected traffic8,131 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$4 million (2022 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was I-90 over RD N NE & RR built?

It was built in 1959, making it 66 years old in 2025.

What condition is I-90 over RD N NE & 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 June 2024.

How much traffic does I-90 over RD N NE & RR carry?

About 6,497 vehicles per day (2023 count), of which roughly 23% are trucks.

How long is I-90 over RD N NE & RR?

The structure is 209 ft (63.7 m) long with a longest span of 55 ft (16.8 m) and a deck 34 ft wide.

Who owns I-90 over RD N NE & RR?

It is owned by the State Highway Agency.