US Bridges

Sth 128-OAK ST over Tiffany Creek

Fair

St. Croix County, Wisconsin · 2.3M N JCT Cth Dd · Structure no. B55069100000000

Built
1925
100 years old, rebuilt 1941
Condition
Fair
inspected September 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
28 ft
1 main span
Daily traffic
2,200
2022 count
Owner
State
State Highway Agency

About this bridge

Sth 128-OAK ST over Tiffany Creek is a steel stringer/multi-beam or girder carrying Sth 128-OAK ST over Tiffany Creek in St. Croix County, Wisconsin. It was built in 1925 and reconstructed in 1941, so it is 100 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 2,200 vehicles a day, roughly 7% of them trucks, projected to reach 2,640 by 2043. The structure is 28 ft (8.6 m) long and 65 ft wide. If it were closed, the detour would be 25.5 mi (41 km).

Location

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CarriesSth 128-OAK ST
CrossesTiffany Creek
Location2.3M N JCT Cth Dd
RouteState Highway 128
CountySt. Croix County
StateWisconsin
Coordinates45.05864, -92.17334
Functional classRural Minor Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
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 inspectionSeptember 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 geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating43.2 US tons
Inventory rating25 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadH 15
Structure length28 ft (8.6 m)
Longest span27 ft (8.3 m)
Deck width65 ft (19.8 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,200 (2022)
Projected traffic2,640 by 2043
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed25.5 mi (41 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 128-OAK ST over Tiffany Creek built?

It was built in 1925, making it 100 years old in 2025. It was reconstructed in 1941.

What condition is Sth 128-OAK 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 September 2024.

How much traffic does Sth 128-OAK ST over Tiffany Creek carry?

About 2,200 vehicles per day (2022 count), of which roughly 7% are trucks.

How long is Sth 128-OAK ST over Tiffany Creek?

The structure is 28 ft (8.6 m) long with a longest span of 27 ft (8.3 m) and a deck 65 ft wide.

Who owns Sth 128-OAK ST over Tiffany Creek?

It is owned by the State Highway Agency.