US Bridges

Sth 27 over Thornapple River

Good

Rusk County, Wisconsin · 1.6M N JCT Cth a · Structure no. B54012000000000

Built
2016
9 years old
Condition
Good
inspected June 2024
Type
Slab
Concrete Continuous
Length
125 ft
3 main spans
Daily traffic
2,700
2022 count
Owner
State
State Highway Agency

About this bridge

Sth 27 over Thornapple River is a concrete continuous slab carrying Sth 27 over Thornapple River in Rusk County, Wisconsin. It was built in 2016, so it is 9 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 2,700 vehicles a day, roughly 18% of them trucks, projected to reach 3,240 by 2043. The structure is 125 ft (38.1 m) long and 38 ft wide. If it were closed, the detour would be 13.7 mi (22 km).

Location

Open in Google Maps
CarriesSth 27
CrossesThornapple River
Location1.6M N JCT Cth a
RouteState Highway 27
CountyRusk County
StateWisconsin
Coordinates45.5313, -91.11159
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.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJune 2024
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation8: Equal to present desirable 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 rating48.2 US tons
Inventory rating37.1 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHL 93
Structure length125 ft (38.1 m)
Longest span50 ft (15.2 m)
Deck width38 ft (11.7 m)
Roadway width36 ft (11 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,700 (2022)
Projected traffic3,240 by 2043
Trucks18%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed13.7 mi (22 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 27 over Thornapple River built?

It was built in 2016, making it 9 years old in 2025.

What condition is Sth 27 over Thornapple 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 June 2024.

How much traffic does Sth 27 over Thornapple River carry?

About 2,700 vehicles per day (2022 count), of which roughly 18% are trucks.

How long is Sth 27 over Thornapple River?

The structure is 125 ft (38.1 m) long with a longest span of 50 ft (15.2 m) and a deck 38 ft wide.

Who owns Sth 27 over Thornapple River?

It is owned by the State Highway Agency.