US Bridges

Shady Slope Road over US 395

Good

Spokane County, Washington · 7.8 N JCT I-90 · Structure no. 0017177E0000000

Built
2008
17 years old
Condition
Good
inspected August 2024
Type
Box Beam or Girders - Multiple
Prestressed Concrete Continuous
Length
345 ft
2 main spans
Daily traffic
4,265
2011 count
Owner
State
State Highway Agency

About this bridge

Shady Slope Road over US 395 is a prestressed concrete continuous box beam or girders - multiple carrying Shady Slope Road over US 395 in Spokane County, Washington. It was built in 2008, so it is 17 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 4,265 vehicles a day, roughly 5% of them trucks. The structure is 345 ft (105.2 m) long and 51 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

CarriesShady Slope Road
CrossesUS 395
Location7.8 N JCT I-90
RouteCounty Highway 0
Coordinates47.77597, -117.3745
Functional classUrban Collector

Condition and inspection

Good

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

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation8: Equal to present desirable 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 rating93 US tons
Inventory rating56 US tons

Structure

MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHL 93
Structure length345 ft (105.2 m)
Longest span180 ft (54.9 m)
Deck width51 ft (15.5 m)
Roadway width36 ft (11 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,265 (2011)
Projected traffic—
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway
Detour if closed6.2 mi (10 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$6.2 million (2022 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was Shady Slope Road over US 395 built?

It was built in 2008, making it 17 years old in 2025.

What condition is Shady Slope Road over US 395 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 August 2024.

How much traffic does Shady Slope Road over US 395 carry?

About 4,265 vehicles per day (2011 count), of which roughly 5% are trucks.

How long is Shady Slope Road over US 395?

The structure is 345 ft (105.2 m) long with a longest span of 180 ft (54.9 m) and a deck 51 ft wide.

Who owns Shady Slope Road over US 395?

It is owned by the State Highway Agency.