US Bridges

Stc 5804;WESTSIDE over Trout Creek

Good

Boundary County, Idaho · 5.0 S. 2.3 W. Copeland · Structure no. 000000000020711

Built
2020
5 years old
Condition
Good
inspected July 2022
Type
Tee Beam
Prestressed Concrete
Length
56 ft
1 main span
Daily traffic
300
2023 count
Owner
County
County Highway Agency

About this bridge

Stc 5804;WESTSIDE over Trout Creek is a prestressed concrete tee beam carrying Stc 5804;WESTSIDE over Trout Creek in Boundary County, Idaho. It was built in 2020, so it is 5 years old, younger than the Idaho average of 45.3 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 300 vehicles a day, roughly 7% of them trucks, projected to reach 450 by 2042. The structure is 56 ft (17.1 m) long and 36 ft wide. If it were closed, the detour would be 37.9 mi (61 km).

CarriesStc 5804;WESTSIDE
CrossesTrout Creek
Location5.0 S. 2.3 W. Copeland
RouteCounty Highway 5804
StateIdaho
Coordinates48.83206, -116.4205
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
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2022
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating63.9 US tons
Inventory rating47.2 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHL 93
Structure length56 ft (17.1 m)
Longest span53 ft (16.2 m)
Deck width36 ft (10.9 m)
Roadway width32 ft (9.9 m)
Vertical clearance over deck100 ft (30.5 m)

Traffic and service

Average daily traffic300 (2023)
Projected traffic450 by 2042
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed37.9 mi (61 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Stc 5804;WESTSIDE over Trout Creek built?

It was built in 2020, making it 5 years old in 2025.

What condition is Stc 5804;WESTSIDE over Trout Creek 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 July 2022.

How much traffic does Stc 5804;WESTSIDE over Trout Creek carry?

About 300 vehicles per day (2023 count), of which roughly 7% are trucks.

How long is Stc 5804;WESTSIDE over Trout Creek?

The structure is 56 ft (17.1 m) long with a longest span of 53 ft (16.2 m) and a deck 36 ft wide.

Who owns Stc 5804;WESTSIDE over Trout Creek?

It is owned by the County Highway Agency.