US Bridges

Sth 81 over Hackett Branch

Good

Grant County, Wisconsin · 2.9M E JCT Cth U · Structure no. B22029200000000

Built
2022
3 years old
Condition
Good
inspected September 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
94 ft
1 main span
Daily traffic
920
2023 count
Owner
State
State Highway Agency

About this bridge

Sth 81 over Hackett Branch is a prestressed concrete stringer/multi-beam or girder carrying Sth 81 over Hackett Branch in Grant County, Wisconsin. It was built in 2022, so it is 3 years old, younger than the Wisconsin average of 40.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 9 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 920 vehicles a day, roughly 11% of them trucks, projected to reach 1,100 by 2043. The structure is 94 ft (28.6 m) long and 39 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

Location

Open in Google Maps
CarriesSth 81
CrossesHackett Branch
Location2.9M E JCT Cth U
RouteState Highway 81
CountyGrant County
StateWisconsin
Coordinates42.81289, -90.83794
Functional classRural Minor Arterial

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck9 ExcellentNo problems noted.
Superstructure9 ExcellentNo problems noted.
Substructure9 ExcellentNo problems noted.
Channel and channel protection9 ExcellentNo problems noted.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation9: Superior to present desirable criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating57.5 US tons
Inventory rating38.3 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length94 ft (28.6 m)
Longest span90 ft (27.4 m)
Deck width39 ft (12 m)
Roadway width36 ft (11.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic920 (2023)
Projected traffic1,100 by 2043
Trucks11%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed9.9 mi (16 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 81 over Hackett Branch built?

It was built in 2022, making it 3 years old in 2025.

What condition is Sth 81 over Hackett Branch in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in September 2023.

How much traffic does Sth 81 over Hackett Branch carry?

About 920 vehicles per day (2023 count), of which roughly 11% are trucks.

How long is Sth 81 over Hackett Branch?

The structure is 94 ft (28.6 m) long with a longest span of 90 ft (27.4 m) and a deck 39 ft wide.

Who owns Sth 81 over Hackett Branch?

It is owned by the State Highway Agency.