US Bridges

Cth a over Thornapple River

Poor

Rusk County, Wisconsin · 1.8M W JCT Sth 27--5 · Structure no. B54001700000000

Built
1967
58 years old
Condition
Poor
inspected June 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
160 ft
3 main spans
Daily traffic
787
2024 count
Owner
County
County Highway Agency

About this bridge

Cth a over Thornapple River is a prestressed concrete continuous stringer/multi-beam or girder carrying Cth a over Thornapple River in Rusk County, Wisconsin. It was built in 1967, so it is 58 years old, older than the Wisconsin average of 40.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 787 vehicles a day, projected to reach 859 by 2043. The structure is 160 ft (48.8 m) long and 35 ft wide. If it were closed, the detour would be 15.5 mi (25 km).

Location

Open in Google Maps
CarriesCth a
CrossesThornapple River
Location1.8M W JCT Sth 27--5
RouteCounty Highway 0A
CountyRusk County
StateWisconsin
Coordinates45.50842, -91.14928
Functional classRural Major Collector

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck4 PoorAdvanced section loss, deterioration, spalling or scour.
Superstructure9 ExcellentNo problems noted.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJune 2024
Inspection intervalevery 12 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating52.2 US tons
Inventory rating26.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadH 20
Structure length160 ft (48.8 m)
Longest span53 ft (16.2 m)
Deck width35 ft (10.7 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic787 (2024)
Projected traffic859 by 2043
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed15.5 mi (25 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$850,000 (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Cth a over Thornapple River built?

It was built in 1967, making it 58 years old in 2025.

What condition is Cth a over Thornapple River in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in June 2024.

How much traffic does Cth a over Thornapple River carry?

About 787 vehicles per day (2024 count).

How long is Cth a over Thornapple River?

The structure is 160 ft (48.8 m) long with a longest span of 53 ft (16.2 m) and a deck 35 ft wide.

Who owns Cth a over Thornapple River?

It is owned by the County Highway Agency.