US Bridges

Sth 25 over Lake Tainter

Fair

Dunn County, Wisconsin · 1.7M N JCT Cth Bb to E · Structure no. B17006700000000

Built
1961
64 years old, rebuilt 1995
Condition
Fair
inspected August 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
106 ft
1 main span
Daily traffic
3,800
2022 count
Owner
State
State Highway Agency

About this bridge

Sth 25 over Lake Tainter is a steel stringer/multi-beam or girder carrying Sth 25 over Lake Tainter in Dunn County, Wisconsin. It was built in 1961 and reconstructed in 1995, so it is 64 years old, older 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 5 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 3,800 vehicles a day, roughly 9% of them trucks, projected to reach 7,400 by 2043. The structure is 106 ft (32.3 m) long and 40 ft wide. If it were closed, the detour would be 47.8 mi (77 km).

Location

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CarriesSth 25
CrossesLake Tainter
Location1.7M N JCT Cth Bb to E
RouteState Highway 25
CountyDunn County
StateWisconsin
Coordinates44.95292, -91.90435
Functional classRural Principal Arterial - Other

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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
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 rating59.4 US tons
Inventory rating34 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length106 ft (32.3 m)
Longest span102 ft (31.1 m)
Deck width40 ft (12.1 m)
Roadway width38 ft (11.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,800 (2022)
Projected traffic7,400 by 2043
Trucks9%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed47.8 mi (77 km)
TollOn a free road
National Highway SystemYes

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 25 over Lake Tainter built?

It was built in 1961, making it 64 years old in 2025. It was reconstructed in 1995.

What condition is Sth 25 over Lake Tainter 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 August 2024.

How much traffic does Sth 25 over Lake Tainter carry?

About 3,800 vehicles per day (2022 count), of which roughly 9% are trucks.

How long is Sth 25 over Lake Tainter?

The structure is 106 ft (32.3 m) long with a longest span of 102 ft (31.1 m) and a deck 40 ft wide.

Who owns Sth 25 over Lake Tainter?

It is owned by the State Highway Agency.