US Bridges

IH I-41/USH 41/USH over Wisc & Southern RR

Fair

Washington County, Wisconsin · 6.8 MI N JCT Sth 74 to E · Structure no. B66000100000000

Built
1952
73 years old, rebuilt 1970
Condition
Fair
inspected August 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
175 ft
3 main spans
Daily traffic
35,400
2022 count
Owner
State
State Highway Agency

About this bridge

IH I-41/USH 41/USH over Wisc & Southern RR is a steel continuous stringer/multi-beam or girder carrying IH I-41/USH 41/USH over Wisc & Southern RR in Washington County, Wisconsin. It was built in 1952 and reconstructed in 1970, so it is 73 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 6 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 35,400 vehicles a day, roughly 9% of them trucks, projected to reach 52,440 by 2039. The structure is 175 ft (53.2 m) long and 69 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

CarriesIH I-41/USH 41/USH
CrossesWisc & Southern RR
Location6.8 MI N JCT Sth 74 to E
RouteInterstate 41
Coordinates43.24746, -88.18145
Functional classUrban Principal Arterial - Interstate

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating48.6 US tons
Inventory rating28.5 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length175 ft (53.2 m)
Longest span66 ft (20.1 m)
Deck width69 ft (21 m)
Roadway width66 ft (20.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic35,400 (2022)
Projected traffic52,440 by 2039
Trucks9%
Lanes on structure4
Traffic directionOne-way traffic
CarriesHighway
CrossesRailroad
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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was IH I-41/USH 41/USH over Wisc & Southern RR built?

It was built in 1952, making it 73 years old in 2025. It was reconstructed in 1970.

What condition is IH I-41/USH 41/USH over Wisc & Southern RR 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 August 2023.

How much traffic does IH I-41/USH 41/USH over Wisc & Southern RR carry?

About 35,400 vehicles per day (2022 count), of which roughly 9% are trucks.

How long is IH I-41/USH 41/USH over Wisc & Southern RR?

The structure is 175 ft (53.2 m) long with a longest span of 66 ft (20.1 m) and a deck 69 ft wide.

Who owns IH I-41/USH 41/USH over Wisc & Southern RR?

It is owned by the State Highway Agency.