US Bridges

NFSR 50172 over E Fk Weiser River

Good

Adams County, Idaho · No Data Entered · Structure no. 041201000015076

Built
2013
12 years old
Condition
Good
inspected September 2024
Type
Girder and Floorbeam System
Prestressed Concrete
Length
66 ft
1 main span
Daily traffic
50
Owner
Federal
U.S. Forest Service

About this bridge

NFSR 50172 over E Fk Weiser River is a prestressed concrete girder and floorbeam system carrying NFSR 50172 over E Fk Weiser River in Adams County, Idaho. It was built in 2013, so it is 12 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 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 50 vehicles a day, projected to reach 75 by 2045. The structure is 66 ft (20.1 m) long and 16 ft wide. If it were closed, the detour would be 620.7 mi (999 km).

Location

Open in Google Maps
CarriesNFSR 50172
CrossesE Fk Weiser River
LocationNo Data Entered
RouteFederal Lands Road 50172
CountyAdams County
StateIdaho
Coordinates44.8432, -116.36964
Functional classRural Local

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.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating40 US tons
Inventory rating31.4 US tons

Structure

Structure typeGirder and Floorbeam System
MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadHL 93
Structure length66 ft (20.1 m)
Longest span64 ft (19.5 m)
Deck width16 ft (4.9 m)
Roadway width14 ft (4.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic50 (—)
Projected traffic75 by 2045
Trucks—
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed620.7 mi (999 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerU.S. Forest Service
Maintained byU.S. Forest Service
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was NFSR 50172 over E Fk Weiser River built?

It was built in 2013, making it 12 years old in 2025.

What condition is NFSR 50172 over E Fk Weiser River 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 September 2024.

How much traffic does NFSR 50172 over E Fk Weiser River carry?

About 50 vehicles per day (latest count).

How long is NFSR 50172 over E Fk Weiser River?

The structure is 66 ft (20.1 m) long with a longest span of 64 ft (19.5 m) and a deck 16 ft wide.

Who owns NFSR 50172 over E Fk Weiser River?

It is owned by the U.S. Forest Service.