US Bridges

Seven Mile Road over Spokane River

Good

Spokane County, Washington · 0.5 Mi. NE SR 291 · Structure no. 085915000000000

Built
1992
33 years old
Condition
Good
inspected July 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
353 ft
3 main spans
Daily traffic
4,341
2020 count
Owner
County
County Highway Agency

About this bridge

Seven Mile Road over Spokane River is a prestressed concrete continuous stringer/multi-beam or girder carrying Seven Mile Road over Spokane River in Spokane County, Washington. It was built in 1992, so it is 33 years old, younger than the Washington average of 49.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 4,341 vehicles a day, roughly 14% of them trucks, projected to reach 6,251 by 2042. The structure is 353 ft (107.5 m) long and 54 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

Location

Open in Google Maps
CarriesSeven Mile Road
CrossesSpokane River
Location0.5 Mi. NE SR 291
RouteCounty Highway 4444
CountySpokane County
StateWashington
Coordinates47.74042, -117.52022
Functional classRural Major Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating28.2 US tons
Inventory rating21.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 25 or greater
Structure length353 ft (107.5 m)
Longest span118 ft (36.1 m)
Deck width54 ft (16.4 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,341 (2020)
Projected traffic6,251 by 2042
Trucks14%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed9.9 mi (16 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$13.1 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Seven Mile Road over Spokane River built?

It was built in 1992, making it 33 years old in 2025.

What condition is Seven Mile Road over Spokane River in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in July 2023.

How much traffic does Seven Mile Road over Spokane River carry?

About 4,341 vehicles per day (2020 count), of which roughly 14% are trucks.

How long is Seven Mile Road over Spokane River?

The structure is 353 ft (107.5 m) long with a longest span of 118 ft (36.1 m) and a deck 54 ft wide.

Who owns Seven Mile Road over Spokane River?

It is owned by the County Highway Agency.