US Bridges

FR 2371 over Armstrong Creek

Fair

Forest County, Wisconsin · 3.3 MI S of JCT Ush 8 · Structure no. 090605000001018

Built
1968
57 years old, rebuilt 1986
Condition
Fair
inspected September 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
42 ft
1 main span
Daily traffic
50
Owner
Federal
U.S. Forest Service

About this bridge

FR 2371 over Armstrong Creek is a steel stringer/multi-beam or girder carrying FR 2371 over Armstrong Creek in Forest County, Wisconsin. It was built in 1968 and reconstructed in 1986, so it is 57 years old, older than the Wisconsin average of 40.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 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 50 vehicles a day, projected to reach 100 by 2012. The structure is 42 ft (12.9 m) long and 24 ft wide. If it were closed, the detour would be 7.5 mi (12 km).

CarriesFR 2371
CrossesArmstrong Creek
Location3.3 MI S of JCT Ush 8
RouteFederal Lands Road 23710
Coordinates45.6122, -88.4425
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure9 ExcellentNo 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 adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating61.4 US tons
Inventory rating47.5 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length42 ft (12.9 m)
Longest span40 ft (12.2 m)
Deck width24 ft (7.3 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic50 (—)
Projected traffic100 by 2012
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed7.5 mi (12 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 FR 2371 over Armstrong Creek built?

It was built in 1968, making it 57 years old in 2025. It was reconstructed in 1986.

What condition is FR 2371 over Armstrong 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 September 2024.

How much traffic does FR 2371 over Armstrong Creek carry?

About 50 vehicles per day (latest count).

How long is FR 2371 over Armstrong Creek?

The structure is 42 ft (12.9 m) long with a longest span of 40 ft (12.2 m) and a deck 24 ft wide.

Who owns FR 2371 over Armstrong Creek?

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