US Bridges

Argonne RD over I-90

FairPosted for load

Spokane County, Washington · 6.5 E JCT US 2 · Structure no. 0004637A0000000

Built
1954
71 years old
Condition
Fair
inspected May 2023
Type
Tee Beam
Concrete Continuous
Length
216 ft
4 main spans
Daily traffic
17,996
2022 count
Owner
State
State Highway Agency

About this bridge

Argonne RD over I-90 is a concrete continuous tee beam carrying Argonne RD over I-90 in Spokane County, Washington. It was built in 1954, so it is 71 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. Its operating status is: posted for load restriction.

It carries about 17,996 vehicles a day, roughly 5% of them trucks, projected to reach 24,300 by 2039. The structure is 216 ft (65.8 m) long and 36 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesArgonne RD
CrossesI-90
Location6.5 E JCT US 2
RouteCity Street 0
CountySpokane County
StateWashington
Coordinates47.67336, -117.28275
Functional classUrban Minor Arterial

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 inspectionMay 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourBridge not over waterway
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Approach roadway alignment8: Equal to present desirable criteria
Operating rating22.8 US tons
Inventory rating17.9 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 15
Structure length216 ft (65.8 m)
Longest span62 ft (18.9 m)
Deck width36 ft (10.9 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic17,996 (2022)
Projected traffic24,300 by 2039
Trucks5%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway and pedestrian
CrossesHighway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

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$3.6 million (2022 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was Argonne RD over I-90 built?

It was built in 1954, making it 71 years old in 2025.

What condition is Argonne RD over I-90 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 May 2023.

How much traffic does Argonne RD over I-90 carry?

About 17,996 vehicles per day (2022 count), of which roughly 5% are trucks.

How long is Argonne RD over I-90?

The structure is 216 ft (65.8 m) long with a longest span of 62 ft (18.9 m) and a deck 36 ft wide.

Who owns Argonne RD over I-90?

It is owned by the State Highway Agency.