US Bridges

Arthur ST over I-90

Poor

Spokane County, Washington · 0.7 E JCT US 2 · Structure no. 0008611B0000000

Built
1970
55 years old
Condition
Poor
inspected October 2023
Type
Box Beam or Girders - Multiple
Concrete Continuous
Length
228 ft
2 main spans
Daily traffic
6,150
2002 count
Owner
State
State Highway Agency

About this bridge

Arthur ST over I-90 is a concrete continuous box beam or girders - multiple carrying Arthur ST over I-90 in Spokane County, Washington. It was built in 1970, so it is 55 years old, older than the Washington average of 49.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 6,150 vehicles a day, roughly 5% of them trucks, projected to reach 9,287 by 2036. The structure is 228 ft (69.5 m) long and 58 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesArthur ST
CrossesI-90
Location0.7 E JCT US 2
RouteCity Street 0
Coordinates47.65189, -117.39525
Functional classUrban Minor Arterial

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck4 PoorAdvanced section loss, deterioration, spalling or scour.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating99 US tons
Inventory rating96 US tons

Structure

MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20 + Mod
Structure length228 ft (69.5 m)
Longest span112 ft (34.1 m)
Deck width58 ft (17.7 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,150 (2002)
Projected traffic9,287 by 2036
Trucks5%
Lanes on structure2
Traffic directionTwo-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$5 million (2022 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was Arthur ST over I-90 built?

It was built in 1970, making it 55 years old in 2025.

What condition is Arthur ST over I-90 in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in October 2023.

How much traffic does Arthur ST over I-90 carry?

About 6,150 vehicles per day (2002 count), of which roughly 5% are trucks.

How long is Arthur ST over I-90?

The structure is 228 ft (69.5 m) long with a longest span of 112 ft (34.1 m) and a deck 58 ft wide.

Who owns Arthur ST over I-90?

It is owned by the State Highway Agency.