US Bridges

I-90 W-N Ramp over Howard ST

Fair

Spokane County, Washington · 1.5 E JCT US 195 · Structure no. 0008307A0000000

Built
1967
58 years old
Condition
Fair
inspected June 2024
Type
Box Beam or Girders - Multiple
Concrete Continuous
Length
253 ft
2 main spans
Daily traffic
8,960
2023 count
Owner
State
State Highway Agency

About this bridge

I-90 W-N Ramp over Howard ST is a concrete continuous box beam or girders - multiple carrying I-90 W-N Ramp over Howard ST in Spokane County, Washington. It was built in 1967, so it is 58 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 8,960 vehicles a day, roughly 5% of them trucks, projected to reach 10,144 by 2039. The structure is 253 ft (77.1 m) long and 32 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesI-90 W-N Ramp
CrossesHoward ST
Location1.5 E JCT US 195
RouteInterstate 90
CountySpokane County
StateWashington
Coordinates47.65289, -117.42128
Functional classUrban 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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating57 US tons
Inventory rating33 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20 + Mod
Structure length253 ft (77.1 m)
Longest span125 ft (38.1 m)
Deck width32 ft (9.8 m)
Roadway width22 ft (6.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic8,960 (2023)
Projected traffic10,144 by 2039
Trucks5%
Lanes on structure1
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.2 mi (2 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$3 million (2022 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was I-90 W-N Ramp over Howard ST built?

It was built in 1967, making it 58 years old in 2025.

What condition is I-90 W-N Ramp over Howard ST 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 W-N Ramp over Howard ST carry?

About 8,960 vehicles per day (2023 count), of which roughly 5% are trucks.

How long is I-90 W-N Ramp over Howard ST?

The structure is 253 ft (77.1 m) long with a longest span of 125 ft (38.1 m) and a deck 32 ft wide.

Who owns I-90 W-N Ramp over Howard ST?

It is owned by the State Highway Agency.