US Bridges

STC5731;ST Joe Rvr over Drain; Half Bridge

Good

Shoshone County, Idaho · 5.0 E. Avery · Structure no. 000000000020439

Built
2003
22 years old
Condition
Good
inspected August 2024
Type
Tee Beam
Prestressed Concrete
Length
62 ft
1 main span
Daily traffic
310
2023 count
Owner
County
County Highway Agency

About this bridge

STC5731;ST Joe Rvr over Drain; Half Bridge is a prestressed concrete tee beam carrying STC5731;ST Joe Rvr over Drain; Half Bridge in Shoshone County, Idaho. It was built in 2003, so it is 22 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 310 vehicles a day, roughly 24% of them trucks, projected to reach 465 by 2042. The structure is 62 ft (18.9 m) long and 16 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

CarriesSTC5731;ST Joe Rvr
CrossesDrain; Half Bridge
Location5.0 E. Avery
RouteCounty Highway 5731
StateIdaho
Coordinates47.22775, -115.702
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.
Last inspectionAugust 2024
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating75 US tons
Inventory rating35.1 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length62 ft (18.9 m)
Longest span60 ft (18.3 m)
Deck width16 ft (4.8 m)
Roadway width31 ft (9.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic310 (2023)
Projected traffic465 by 2042
Trucks24%
Lanes on structure1
Traffic directionOne-way traffic
CarriesHighway
CrossesOther
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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was STC5731;ST Joe Rvr over Drain; Half Bridge built?

It was built in 2003, making it 22 years old in 2025.

What condition is STC5731;ST Joe Rvr over Drain; Half Bridge 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 STC5731;ST Joe Rvr over Drain; Half Bridge carry?

About 310 vehicles per day (2023 count), of which roughly 24% are trucks.

How long is STC5731;ST Joe Rvr over Drain; Half Bridge?

The structure is 62 ft (18.9 m) long with a longest span of 60 ft (18.3 m) and a deck 16 ft wide.

Who owns STC5731;ST Joe Rvr over Drain; Half Bridge?

It is owned by the County Highway Agency.