US Bridges

SR 291 over Little Spokane R

Good

Spokane County, Washington · 10.0 N JCT US 2 · Structure no. 0007996A0000000

Built
1966
59 years old
Condition
Good
inspected September 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
180 ft
3 main spans
Daily traffic
8,279
2023 count
Owner
State
State Highway Agency

About this bridge

SR 291 over Little Spokane R is a prestressed concrete continuous stringer/multi-beam or girder carrying SR 291 over Little Spokane R in Spokane County, Washington. It was built in 1966, so it is 59 years old, older 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 8,279 vehicles a day, roughly 4% of them trucks, projected to reach 10,820 by 2039. The structure is 180 ft (54.9 m) long and 33 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

CarriesSR 291
CrossesLittle Spokane R
Location10.0 N JCT US 2
RouteState Highway 291
Coordinates47.78286, -117.53061
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 protection7 GoodSome minor problems.
Last inspectionSeptember 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating85 US tons
Inventory rating50 US tons

Structure

MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length180 ft (54.9 m)
Longest span60 ft (18.3 m)
Deck width33 ft (10 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic8,279 (2023)
Projected traffic10,820 by 2039
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.8 mi (159 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$2.6 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was SR 291 over Little Spokane R built?

It was built in 1966, making it 59 years old in 2025.

What condition is SR 291 over Little Spokane R 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 September 2023.

How much traffic does SR 291 over Little Spokane R carry?

About 8,279 vehicles per day (2023 count), of which roughly 4% are trucks.

How long is SR 291 over Little Spokane R?

The structure is 180 ft (54.9 m) long with a longest span of 60 ft (18.3 m) and a deck 33 ft wide.

Who owns SR 291 over Little Spokane R?

It is owned by the State Highway Agency.