US Bridges

IH 43 SB over Sth 28

Fair

Sheboygan County, Wisconsin · 1.6M S JCT Cth Ppp · Structure no. B59005300000000

Built
1984
41 years old
Condition
Fair
inspected November 2023
Type
Slab
Concrete Continuous
Length
184 ft
4 main spans
Daily traffic
18,050
2023 count
Owner
State
State Highway Agency

About this bridge

IH 43 SB over Sth 28 is a concrete continuous slab carrying IH 43 SB over Sth 28 in Sheboygan County, Wisconsin. It was built in 1984, so it is 41 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 18,050 vehicles a day, roughly 1% of them trucks, projected to reach 23,985 by 2042. The structure is 184 ft (56 m) long and 43 ft wide.

CarriesIH 43 SB
CrossesSth 28
Location1.6M S JCT Cth Ppp
RouteInterstate 43
Coordinates43.71793, -87.76067
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.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating61.2 US tons
Inventory rating35.7 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length184 ft (56 m)
Longest span65 ft (19.8 m)
Deck width43 ft (13.1 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic18,050 (2023)
Projected traffic23,985 by 2042
Trucks1%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed—
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 43 SB over Sth 28 built?

It was built in 1984, making it 41 years old in 2025.

What condition is IH 43 SB over Sth 28 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 November 2023.

How much traffic does IH 43 SB over Sth 28 carry?

About 18,050 vehicles per day (2023 count), of which roughly 1% are trucks.

How long is IH 43 SB over Sth 28?

The structure is 184 ft (56 m) long with a longest span of 65 ft (19.8 m) and a deck 43 ft wide.

Who owns IH 43 SB over Sth 28?

It is owned by the State Highway Agency.