US Bridges

Sth 147 over West Twin River

Fair

Manitowoc County, Wisconsin · 2.1M N JCT Cth Q · Structure no. B36013500000000

Built
1994
31 years old
Condition
Fair
inspected November 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
213 ft
3 main spans
Daily traffic
3,600
2022 count
Owner
State
State Highway Agency

About this bridge

Sth 147 over West Twin River is a prestressed concrete continuous stringer/multi-beam or girder carrying Sth 147 over West Twin River in Manitowoc County, Wisconsin. It was built in 1994, so it is 31 years old, younger 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 3,600 vehicles a day, roughly 8% of them trucks, projected to reach 3,540 by 2043. The structure is 213 ft (64.8 m) long and 39 ft wide. If it were closed, the detour would be 31.7 mi (51 km).

CarriesSth 147
CrossesWest Twin River
Location2.1M N JCT Cth Q
RouteState Highway 147
Coordinates44.27648, -87.75605
Functional classRural Minor Arterial

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.
Superstructure8 Very GoodNo problems noted.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionNovember 2024
Inspection intervalevery 48 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 rating71.7 US tons
Inventory rating39.2 US tons

Structure

MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length213 ft (64.8 m)
Longest span70 ft (21.3 m)
Deck width39 ft (11.9 m)
Roadway width36 ft (11 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,600 (2022)
Projected traffic3,540 by 2043
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed31.7 mi (51 km)
TollOn a free road
National Highway SystemNo

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 Sth 147 over West Twin River built?

It was built in 1994, making it 31 years old in 2025.

What condition is Sth 147 over West Twin 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 November 2024.

How much traffic does Sth 147 over West Twin River carry?

About 3,600 vehicles per day (2022 count), of which roughly 8% are trucks.

How long is Sth 147 over West Twin River?

The structure is 213 ft (64.8 m) long with a longest span of 70 ft (21.3 m) and a deck 39 ft wide.

Who owns Sth 147 over West Twin River?

It is owned by the State Highway Agency.