US Bridges

Allen Road over Chamokane Creek

Fair

Stevens County, Washington · .07 W Springdale-Hunters · Structure no. 080716000000000

Built
1966
59 years old, rebuilt 1991
Condition
Fair
inspected October 2023
Type
Slab
Prestressed Concrete
Length
24 ft
1 main span
Daily traffic
445
2024 count
Owner
County
County Highway Agency

About this bridge

Allen Road over Chamokane Creek is a prestressed concrete slab carrying Allen Road over Chamokane Creek in Stevens County, Washington. It was built in 1966 and reconstructed in 1991, 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 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 445 vehicles a day, projected to reach 90 by 2037. The structure is 24 ft (7.3 m) long and 26 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

Location

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CarriesAllen Road
CrossesChamokane Creek
Location.07 W Springdale-Hunters
RouteCounty Highway 13260
CountyStevens County
StateWashington
Coordinates48.03163, -117.92685
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
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 geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating52.5 US tons
Inventory rating40.3 US tons

Structure

Structure typeSlab
MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadHS 20
Structure length24 ft (7.3 m)
Longest span23 ft (7 m)
Deck width26 ft (7.8 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic445 (2024)
Projected traffic90 by 2037
Trucks0%
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

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$1.2 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Allen Road over Chamokane Creek built?

It was built in 1966, making it 59 years old in 2025. It was reconstructed in 1991.

What condition is Allen 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 Allen Road over Chamokane Creek carry?

About 445 vehicles per day (2024 count).

How long is Allen Road over Chamokane Creek?

The structure is 24 ft (7.3 m) long with a longest span of 23 ft (7 m) and a deck 26 ft wide.

Who owns Allen Road over Chamokane Creek?

It is owned by the County Highway Agency.