US Bridges

FR 3847 over Otter Creek

Good

Forest County, Wisconsin · 1 MI N of Cty C on FR3847 · Structure no. 091304000031321

Built
2019
6 years old
Condition
Good
inspected September 2024
Type
Culvert
Aluminum, Wrought Iron, or Cast Iron
Length
25 ft
1 main span
Daily traffic
10
2019 count
Owner
Federal
U.S. Forest Service

About this bridge

FR 3847 over Otter Creek is a aluminum, wrought iron, or cast iron culvert carrying FR 3847 over Otter Creek in Forest County, Wisconsin. It was built in 2019, so it is 6 years old, younger than the Wisconsin average of 40.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 9 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 10 vehicles a day, projected to reach 15 by 2045. The structure is 25 ft (7.7 m) long. If it were closed, the detour would be 11.8 mi (19 km).

CarriesFR 3847
CrossesOtter Creek
Location1 MI N of Cty C on FR3847
RouteFederal Lands Road 3847
Coordinates45.43616, -88.50289
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
Channel and channel protection8 Very GoodNo problems noted.
Culvert9 ExcellentNo problems noted.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation9: Superior to present desirable criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating58.5 US tons
Inventory rating45 US tons

Structure

Structure typeCulvert
MaterialAluminum, Wrought Iron, or Cast Iron
DeckNot applicable
Main spans1
Design loadUnknown
Structure length25 ft (7.7 m)
Longest span25 ft (7.7 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10 (2019)
Projected traffic15 by 2045
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed11.8 mi (19 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 3847 over Otter Creek built?

It was built in 2019, making it 6 years old in 2025.

What condition is FR 3847 over Otter 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 September 2024.

How much traffic does FR 3847 over Otter Creek carry?

About 10 vehicles per day (2019 count).

How long is FR 3847 over Otter Creek?

The structure is 25 ft (7.7 m) long with a longest span of 25 ft (7.7 m).

Who owns FR 3847 over Otter Creek?

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