US Bridges

IH 41 NB over Kohlsville River

Good

Washington County, Wisconsin · 4.4 M N JCT Sth 33 · Structure no. B66018800000000

Built
2017
8 years old
Condition
Good
inspected September 2021
Type
Slab
Concrete
Length
49 ft
1 main span
Daily traffic
15,750
2021 count
Owner
State
State Highway Agency

About this bridge

IH 41 NB over Kohlsville River is a concrete slab carrying IH 41 NB over Kohlsville River in Washington County, Wisconsin. It was built in 2017, so it is 8 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 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 15,750 vehicles a day, projected to reach 17,650 by 2041. The structure is 49 ft (15 m) long and 50 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

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CarriesIH 41 NB
CrossesKohlsville River
Location4.4 M N JCT Sth 33
RouteInterstate 41
CountyWashington County
StateWisconsin
Coordinates43.48364, -88.36661
Functional classRural Principal Arterial - Interstate

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 protection8 Very GoodNo problems noted.
Last inspectionSeptember 2021
Inspection intervalevery 44 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating48.2 US tons
Inventory rating37.1 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length49 ft (15 m)
Longest span46 ft (14 m)
Deck width50 ft (15.2 m)
Roadway width47 ft (14.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic15,750 (2021)
Projected traffic17,650 by 2041
Trucks0%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed0.6 mi (1 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was IH 41 NB over Kohlsville River built?

It was built in 2017, making it 8 years old in 2025.

What condition is IH 41 NB over Kohlsville 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 2021.

How much traffic does IH 41 NB over Kohlsville River carry?

About 15,750 vehicles per day (2021 count).

How long is IH 41 NB over Kohlsville River?

The structure is 49 ft (15 m) long with a longest span of 46 ft (14 m) and a deck 50 ft wide.

Who owns IH 41 NB over Kohlsville River?

It is owned by the State Highway Agency.