US Bridges

IH 43 NB Off Ramp over IH I41 NB

Good

Brown County, Wisconsin · At 41 NB · Structure no. B05067800000000

Built
2015
10 years old
Condition
Good
inspected June 2023
Type
Box Beam or Girders - Single or Spread
Steel Continuous
Length
3,989 ft
13 main spans
Daily traffic
13,000
2021 count
Owner
State
State Highway Agency

About this bridge

IH 43 NB Off Ramp over IH I41 NB is a steel continuous box beam or girders - single or spread carrying IH 43 NB Off Ramp over IH I41 NB in Brown County, Wisconsin. It was built in 2015, so it is 10 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 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 13,000 vehicles a day, projected to reach 10,200 by 2042. The structure is 3,989 ft (1,215.8 m) long and 45 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

Open in Google Maps
CarriesIH 43 NB Off Ramp
CrossesIH I41 NB
LocationAt 41 NB
RouteInterstate 43
CountyBrown County
StateWisconsin
Coordinates44.55584, -88.04603
Functional classUrban 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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionJune 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating48.6 US tons
Inventory rating37.5 US tons

Structure

Structure typeBox Beam or Girders - Single or Spread
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans13 (+10 approach)
Design loadHL 93
Structure length3,989 ft (1,215.8 m)
Longest span247 ft (75.3 m)
Deck width45 ft (13.7 m)
Roadway width42 ft (12.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic13,000 (2021)
Projected traffic10,200 by 2042
Trucks0%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway and railroad
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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$22.7 million (2024 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was IH 43 NB Off Ramp over IH I41 NB built?

It was built in 2015, making it 10 years old in 2025.

What condition is IH 43 NB Off Ramp over IH I41 NB 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 June 2023.

How much traffic does IH 43 NB Off Ramp over IH I41 NB carry?

About 13,000 vehicles per day (2021 count).

How long is IH 43 NB Off Ramp over IH I41 NB?

The structure is 3,989 ft (1,215.8 m) long with a longest span of 247 ft (75.3 m) and a deck 45 ft wide.

Who owns IH 43 NB Off Ramp over IH I41 NB?

It is owned by the State Highway Agency.