US Bridges

I-90 over US 395 SB

Fair

Adams County, Washington · 13.6 E JCT SR 21 · Structure no. 0014601D0000000

Built
1996
29 years old
Condition
Fair
inspected September 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
139 ft
1 main span
Daily traffic
5,868
2023 count
Owner
State
State Highway Agency

About this bridge

I-90 over US 395 SB is a prestressed concrete stringer/multi-beam or girder carrying I-90 over US 395 SB in Adams County, Washington. It was built in 1996, so it is 29 years old, younger 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 5,868 vehicles a day, roughly 26% of them trucks, projected to reach 6,684 by 2039. The structure is 139 ft (42.4 m) long and 40 ft wide.

Location

Open in Google Maps
CarriesI-90
CrossesUS 395 SB
Location13.6 E JCT SR 21
RouteInterstate 90
CountyAdams County
StateWashington
Coordinates47.1115, -118.38889
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.
Substructure8 Very GoodNo problems noted.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating99 US tons
Inventory rating62.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 25 or greater
Structure length139 ft (42.4 m)
Longest span133 ft (40.5 m)
Deck width40 ft (12.1 m)
Roadway width38 ft (11.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,868 (2023)
Projected traffic6,684 by 2039
Trucks26%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed—
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$2.6 million (2022 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was I-90 over US 395 SB built?

It was built in 1996, making it 29 years old in 2025.

What condition is I-90 over US 395 SB 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 September 2023.

How much traffic does I-90 over US 395 SB carry?

About 5,868 vehicles per day (2023 count), of which roughly 26% are trucks.

How long is I-90 over US 395 SB?

The structure is 139 ft (42.4 m) long with a longest span of 133 ft (40.5 m) and a deck 40 ft wide.

Who owns I-90 over US 395 SB?

It is owned by the State Highway Agency.