US Bridges

Sth 29 over Trimbelle River

Fair

Pierce County, Wisconsin · 0.1M E JCT Cth W · Structure no. B47063100000000

Built
1941
84 years old, rebuilt 1995
Condition
Fair
inspected April 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
42 ft
1 main span
Daily traffic
2,500
2022 count
Owner
State
State Highway Agency

About this bridge

Sth 29 over Trimbelle River is a steel stringer/multi-beam or girder carrying Sth 29 over Trimbelle River in Pierce County, Wisconsin. It was built in 1941 and reconstructed in 1995, so it is 84 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 2,500 vehicles a day, roughly 10% of them trucks, projected to reach 3,000 by 2043. The structure is 42 ft (12.7 m) long and 36 ft wide. If it were closed, the detour would be 34.8 mi (56 km).

Location

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CarriesSth 29
CrossesTrimbelle River
Location0.1M E JCT Cth W
RouteState Highway 29
CountyPierce County
StateWisconsin
Coordinates44.85214, -92.50033
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than 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 rating55.8 US tons
Inventory rating34 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadH 20
Structure length42 ft (12.7 m)
Longest span41 ft (12.6 m)
Deck width36 ft (11 m)
Roadway width34 ft (10.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,500 (2022)
Projected traffic3,000 by 2043
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed34.8 mi (56 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 29 over Trimbelle River built?

It was built in 1941, making it 84 years old in 2025. It was reconstructed in 1995.

What condition is Sth 29 over Trimbelle River 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 April 2024.

How much traffic does Sth 29 over Trimbelle River carry?

About 2,500 vehicles per day (2022 count), of which roughly 10% are trucks.

How long is Sth 29 over Trimbelle River?

The structure is 42 ft (12.7 m) long with a longest span of 41 ft (12.6 m) and a deck 36 ft wide.

Who owns Sth 29 over Trimbelle River?

It is owned by the State Highway Agency.