US Bridges

Little Spokane Dr. over Little Spokane River

Good

Spokane County, Washington · 0.4 N Shady Slope · Structure no. 087583000000000

Built
2007
18 years old
Condition
Good
inspected September 2023
Type
Tee Beam
Prestressed Concrete
Length
111 ft
1 main span
Daily traffic
1,726
2020 count
Owner
County
County Highway Agency

About this bridge

Little Spokane Dr. over Little Spokane River is a prestressed concrete tee beam carrying Little Spokane Dr. over Little Spokane River in Spokane County, Washington. It was built in 2007, so it is 18 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 1,726 vehicles a day, roughly 10% of them trucks, projected to reach 2,485 by 2042. The structure is 111 ft (33.7 m) long and 43 ft wide. If it were closed, the detour would be 5 mi (8 km).

CarriesLittle Spokane Dr.
CrossesLittle Spokane River
Location0.4 N Shady Slope
RouteCounty Highway 2570
Coordinates47.80468, -117.3786
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 protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating61.4 US tons
Inventory rating44 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length111 ft (33.7 m)
Longest span105 ft (32 m)
Deck width43 ft (13 m)
Roadway width29 ft (8.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,726 (2020)
Projected traffic2,485 by 2042
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed5 mi (8 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedOther structural work, including hydraulic replacements
Estimated improvement cost$1.6 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Little Spokane Dr. over Little Spokane River built?

It was built in 2007, making it 18 years old in 2025.

What condition is Little Spokane Dr. over Little 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 September 2023.

How much traffic does Little Spokane Dr. over Little Spokane River carry?

About 1,726 vehicles per day (2020 count), of which roughly 10% are trucks.

How long is Little Spokane Dr. over Little Spokane River?

The structure is 111 ft (33.7 m) long with a longest span of 105 ft (32 m) and a deck 43 ft wide.

Who owns Little Spokane Dr. over Little Spokane River?

It is owned by the County Highway Agency.