US Bridges

Sth 147 over E Twin River

Fair

Manitowoc County, Wisconsin · 4.9M N JCT Cth Vv · Structure no. B36012300000000

Built
1985
40 years old
Condition
Fair
inspected November 2024
Type
Slab
Concrete Continuous
Length
109 ft
2 main spans
Daily traffic
2,900
2022 count
Owner
State
State Highway Agency

About this bridge

Sth 147 over E Twin River is a concrete continuous slab carrying Sth 147 over E Twin River in Manitowoc County, Wisconsin. It was built in 1985, so it is 40 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 2,900 vehicles a day, roughly 7% of them trucks, projected to reach 4,120 by 2043. The structure is 109 ft (33.2 m) long and 57 ft wide. If it were closed, the detour would be 56.5 mi (91 km).

CarriesSth 147
CrossesE Twin River
Location4.9M N JCT Cth Vv
RouteState Highway 147
Coordinates44.23669, -87.63849
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.
Superstructure7 GoodSome minor problems.
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 above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating70.2 US tons
Inventory rating41.1 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length109 ft (33.2 m)
Longest span53 ft (16.3 m)
Deck width57 ft (17.4 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,900 (2022)
Projected traffic4,120 by 2043
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed56.5 mi (91 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 E Twin River built?

It was built in 1985, making it 40 years old in 2025.

What condition is Sth 147 over E 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 E Twin River carry?

About 2,900 vehicles per day (2022 count), of which roughly 7% are trucks.

How long is Sth 147 over E Twin River?

The structure is 109 ft (33.2 m) long with a longest span of 53 ft (16.3 m) and a deck 57 ft wide.

Who owns Sth 147 over E Twin River?

It is owned by the State Highway Agency.