US Bridges

IH 43 Sb-Ush 10 EB over Manitowoc River

Fair

Manitowoc County, Wisconsin · 2.0M S JCT Sth 310 · Structure no. B36007200000000

Built
1979
46 years old
Condition
Fair
inspected April 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
504 ft
4 main spans
Daily traffic
11,100
2023 count
Owner
State
State Highway Agency

About this bridge

IH 43 Sb-Ush 10 EB over Manitowoc River is a prestressed concrete continuous stringer/multi-beam or girder carrying IH 43 Sb-Ush 10 EB over Manitowoc River in Manitowoc County, Wisconsin. It was built in 1979, so it is 46 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 11,100 vehicles a day, roughly 16% of them trucks, projected to reach 21,440 by 2042. The structure is 504 ft (153.5 m) long and 43 ft wide. If it were closed, the detour would be 14.9 mi (24 km).

Location

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CarriesIH 43 Sb-Ush 10 EB
CrossesManitowoc River
Location2.0M S JCT Sth 310
RouteInterstate 43
CountyManitowoc County
StateWisconsin
Coordinates44.12939, -87.73297
Functional classRural 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 inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating62.8 US tons
Inventory rating30.3 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20 + Mod
Structure length504 ft (153.5 m)
Longest span125 ft (38.1 m)
Deck width43 ft (13.1 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic11,100 (2023)
Projected traffic21,440 by 2042
Trucks16%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed14.9 mi (24 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-Ush 10 EB over Manitowoc River built?

It was built in 1979, making it 46 years old in 2025.

What condition is IH 43 Sb-Ush 10 EB over Manitowoc 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 April 2023.

How much traffic does IH 43 Sb-Ush 10 EB over Manitowoc River carry?

About 11,100 vehicles per day (2023 count), of which roughly 16% are trucks.

How long is IH 43 Sb-Ush 10 EB over Manitowoc River?

The structure is 504 ft (153.5 m) long with a longest span of 125 ft (38.1 m) and a deck 43 ft wide.

Who owns IH 43 Sb-Ush 10 EB over Manitowoc River?

It is owned by the State Highway Agency.