US Bridges

Lyons Hill Road over Chamokane Creek

Fair

Stevens County, Washington · 0.5 S Springdale-Hunters · Structure no. 079664000000000

Built
1974
51 years old
Condition
Fair
inspected October 2023
Type
Tee Beam
Prestressed Concrete
Length
50 ft
1 main span
Daily traffic
77
2024 count
Owner
County
County Highway Agency

About this bridge

Lyons Hill Road over Chamokane Creek is a prestressed concrete tee beam carrying Lyons Hill Road over Chamokane Creek in Stevens County, Washington. It was built in 1974, so it is 51 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 77 vehicles a day, projected to reach 200 by 2037. The structure is 50 ft (15.2 m) long and 25 ft wide. If it were closed, the detour would be 11.8 mi (19 km).

Location

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CarriesLyons Hill Road
CrossesChamokane Creek
Location0.5 S Springdale-Hunters
RouteCounty Highway 13510
CountyStevens County
StateWashington
Coordinates48.04146, -117.83479
Functional classRural Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating43.2 US tons
Inventory rating33.2 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadHS 20
Structure length50 ft (15.2 m)
Longest span49 ft (15 m)
Deck width25 ft (7.6 m)
Roadway width23 ft (7.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic77 (2024)
Projected traffic200 by 2037
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed11.8 mi (19 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$2.2 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Lyons Hill Road over Chamokane Creek built?

It was built in 1974, making it 51 years old in 2025.

What condition is Lyons Hill Road over Chamokane Creek 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 October 2023.

How much traffic does Lyons Hill Road over Chamokane Creek carry?

About 77 vehicles per day (2024 count).

How long is Lyons Hill Road over Chamokane Creek?

The structure is 50 ft (15.2 m) long with a longest span of 49 ft (15 m) and a deck 25 ft wide.

Who owns Lyons Hill Road over Chamokane Creek?

It is owned by the County Highway Agency.