US Bridges

Sth IRR (sth 47) over Wolf River

Fair

Menominee County, Wisconsin · 0.3M N JCT Sth 55 to N · Structure no. B73000400000000

Built
1986
39 years old
Condition
Fair
inspected July 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
298 ft
3 main spans
Daily traffic
3,000
2022 count
Owner
State
State Highway Agency

About this bridge

Sth IRR (sth 47) over Wolf River is a prestressed concrete continuous stringer/multi-beam or girder carrying Sth IRR (sth 47) over Wolf River in Menominee County, Wisconsin. It was built in 1986, so it is 39 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 3,000 vehicles a day, roughly 7% of them trucks, projected to reach 4,320 by 2042. The structure is 298 ft (90.9 m) long and 45 ft wide. If it were closed, the detour would be 23.6 mi (38 km).

Location

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CarriesSth IRR (sth 47)
CrossesWolf River
Location0.3M N JCT Sth 55 to N
RouteState Highway 47
CountyMenominee County
StateWisconsin
Coordinates44.88837, -88.65575
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than 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 rating70.2 US tons
Inventory rating35.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length298 ft (90.9 m)
Longest span98 ft (30 m)
Deck width45 ft (13.6 m)
Roadway width36 ft (11 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,000 (2022)
Projected traffic4,320 by 2042
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed23.6 mi (38 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 IRR (sth 47) over Wolf River built?

It was built in 1986, making it 39 years old in 2025.

What condition is Sth IRR (sth 47) over Wolf 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 July 2023.

How much traffic does Sth IRR (sth 47) over Wolf River carry?

About 3,000 vehicles per day (2022 count), of which roughly 7% are trucks.

How long is Sth IRR (sth 47) over Wolf River?

The structure is 298 ft (90.9 m) long with a longest span of 98 ft (30 m) and a deck 45 ft wide.

Who owns Sth IRR (sth 47) over Wolf River?

It is owned by the State Highway Agency.