US Bridges

Sth 80 over Little Platte River

Good

Grant County, Wisconsin · 8.5M N JCT Sth 81 to W · Structure no. B22027800000000

Built
2012
13 years old
Condition
Good
inspected October 2021
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
99 ft
1 main span
Daily traffic
3,000
2022 count
Owner
State
State Highway Agency

About this bridge

Sth 80 over Little Platte River is a prestressed concrete stringer/multi-beam or girder carrying Sth 80 over Little Platte River in Grant County, Wisconsin. It was built in 2012, so it is 13 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 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 3,000 vehicles a day, projected to reach 1,900 by 2040. The structure is 99 ft (30.1 m) long and 52 ft wide. If it were closed, the detour would be 19.9 mi (32 km).

CarriesSth 80
CrossesLittle Platte River
Location8.5M N JCT Sth 81 to W
RouteState Highway 80
Coordinates42.84171, -90.44722
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
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection9 ExcellentNo problems noted.
Last inspectionOctober 2021
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.3 US tons
Inventory rating45.7 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHL 93
Structure length99 ft (30.1 m)
Longest span95 ft (29 m)
Deck width52 ft (15.7 m)
Roadway width49 ft (14.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,000 (2022)
Projected traffic1,900 by 2040
Trucks0%
Lanes on structure3
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed19.9 mi (32 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 80 over Little Platte River built?

It was built in 2012, making it 13 years old in 2025.

What condition is Sth 80 over Little Platte River 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 October 2021.

How much traffic does Sth 80 over Little Platte River carry?

About 3,000 vehicles per day (2022 count).

How long is Sth 80 over Little Platte River?

The structure is 99 ft (30.1 m) long with a longest span of 95 ft (29 m) and a deck 52 ft wide.

Who owns Sth 80 over Little Platte River?

It is owned by the State Highway Agency.