US Bridges

IH 43 SB over Sheboygan River

Fair

Sheboygan County, Wisconsin · 3.3M S JCT Sth 23 to E · Structure no. B59005400000000

Built
1971
54 years old
Condition
Fair
inspected August 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
199 ft
3 main spans
Daily traffic
15,700
2021 count
Owner
State
State Highway Agency

About this bridge

IH 43 SB over Sheboygan River is a prestressed concrete continuous stringer/multi-beam or girder carrying IH 43 SB over Sheboygan River in Sheboygan County, Wisconsin. It was built in 1971, so it is 54 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 15,700 vehicles a day, roughly 20% of them trucks, projected to reach 26,650 by 2042. The structure is 199 ft (60.8 m) long and 56 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

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CarriesIH 43 SB
CrossesSheboygan River
Location3.3M S JCT Sth 23 to E
RouteInterstate 43
CountySheboygan County
StateWisconsin
Coordinates43.74158, -87.75959
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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating61.2 US tons
Inventory rating30.3 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length199 ft (60.8 m)
Longest span67 ft (20.3 m)
Deck width56 ft (17.1 m)
Roadway width53 ft (16.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic15,700 (2021)
Projected traffic26,650 by 2042
Trucks20%
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 43 SB over Sheboygan River built?

It was built in 1971, making it 54 years old in 2025.

What condition is IH 43 SB over Sheboygan River 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 43 SB over Sheboygan River carry?

About 15,700 vehicles per day (2021 count), of which roughly 20% are trucks.

How long is IH 43 SB over Sheboygan River?

The structure is 199 ft (60.8 m) long with a longest span of 67 ft (20.3 m) and a deck 56 ft wide.

Who owns IH 43 SB over Sheboygan River?

It is owned by the State Highway Agency.