US Bridges

Sth 79-EAST ST over Tiffany Creek

Fair

Dunn County, Wisconsin · 0.1M N JCT Sth 170 to W · Structure no. B17001500000000

Built
1955
70 years old, rebuilt 1985
Condition
Fair
inspected August 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
134 ft
3 main spans
Daily traffic
1,200
2022 count
Owner
State
State Highway Agency

About this bridge

Sth 79-EAST ST over Tiffany Creek is a steel continuous stringer/multi-beam or girder carrying Sth 79-EAST ST over Tiffany Creek in Dunn County, Wisconsin. It was built in 1955 and reconstructed in 1985, so it is 70 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 6 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 1,200 vehicles a day, roughly 10% of them trucks, projected to reach 1,440 by 2043. The structure is 134 ft (40.9 m) long and 38 ft wide. If it were closed, the detour would be 26.7 mi (43 km).

Location

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CarriesSth 79-EAST ST
CrossesTiffany Creek
Location0.1M N JCT Sth 170 to W
RouteState Highway 79
CountyDunn County
StateWisconsin
Coordinates45.04646, -92.03565
Functional classRural Major Collector

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.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum 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 rating52.2 US tons
Inventory rating30.3 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadH 20
Structure length134 ft (40.9 m)
Longest span50 ft (15.2 m)
Deck width38 ft (11.6 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,200 (2022)
Projected traffic1,440 by 2043
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed26.7 mi (43 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 79-EAST ST over Tiffany Creek built?

It was built in 1955, making it 70 years old in 2025. It was reconstructed in 1985.

What condition is Sth 79-EAST ST over Tiffany Creek 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 79-EAST ST over Tiffany Creek carry?

About 1,200 vehicles per day (2022 count), of which roughly 10% are trucks.

How long is Sth 79-EAST ST over Tiffany Creek?

The structure is 134 ft (40.9 m) long with a longest span of 50 ft (15.2 m) and a deck 38 ft wide.

Who owns Sth 79-EAST ST over Tiffany Creek?

It is owned by the State Highway Agency.