US Bridges

IH-43 over Bower Creek

Fair

Brown County, Wisconsin · 2.9M N JCT Ush 141 to N · Structure no. B05019200000000

Built
1980
45 years old
Condition
Fair
inspected May 2024
Type
Culvert
Concrete
Length
36 ft
3 main spans
Daily traffic
48,600
2022 count
Owner
State
State Highway Agency

About this bridge

IH-43 over Bower Creek is a concrete culvert carrying IH-43 over Bower Creek in Brown County, Wisconsin. It was built in 1980, so it is 45 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 48,600 vehicles a day, roughly 1% of them trucks, projected to reach 46,660 by 2043. The structure is 36 ft (11 m) long. If it were closed, the detour would be 2.5 mi (4 km).

CarriesIH-43
CrossesBower Creek
Location2.9M N JCT Ush 141 to N
RouteInterstate 43
Coordinates44.45523, -87.96221
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
Channel and channel protection8 Very GoodNo problems noted.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.4 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length36 ft (11 m)
Longest span9 ft (2.7 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic48,600 (2022)
Projected traffic46,660 by 2043
Trucks1%
Lanes on structure6
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed2.5 mi (4 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-43 over Bower Creek built?

It was built in 1980, making it 45 years old in 2025.

What condition is IH-43 over Bower 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 May 2024.

How much traffic does IH-43 over Bower Creek carry?

About 48,600 vehicles per day (2022 count), of which roughly 1% are trucks.

How long is IH-43 over Bower Creek?

The structure is 36 ft (11 m) long with a longest span of 9 ft (2.7 m).

Who owns IH-43 over Bower Creek?

It is owned by the State Highway Agency.