US Bridges

Lrd 870th ST over Trimbelle River

Fair

Pierce County, Wisconsin · 0.3M W JCT Cth J · Structure no. B47007400000000

Built
1986
39 years old
Condition
Fair
inspected April 2024
Type
Slab
Concrete
Length
47 ft
1 main span
Daily traffic
40
2022 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

Lrd 870th ST over Trimbelle River is a concrete slab carrying Lrd 870th ST over Trimbelle River in Pierce County, Wisconsin. It was built in 1986, so it is 39 years old, younger 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 40 vehicles a day, projected to reach 44 by 2043. The structure is 47 ft (14.4 m) long and 28 ft wide. If it were closed, the detour would be 2.5 mi (4 km).

Location

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CarriesLrd 870th ST
CrossesTrimbelle River
Location0.3M W JCT Cth J
RouteCity Street 0
CountyPierce County
StateWisconsin
Coordinates44.75837, -92.55219
Functional classRural Local

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.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionApril 2024
Inspection intervalevery 24 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 rating46.8 US tons
Inventory rating28.5 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadH 20
Structure length47 ft (14.4 m)
Longest span45 ft (13.7 m)
Deck width28 ft (8.5 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic40 (2022)
Projected traffic44 by 2043
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed2.5 mi (4 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerTown or Township Highway Agency
Maintained byTown or Township 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 Lrd 870th ST over Trimbelle River built?

It was built in 1986, making it 39 years old in 2025.

What condition is Lrd 870th ST 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 Lrd 870th ST over Trimbelle River carry?

About 40 vehicles per day (2022 count).

How long is Lrd 870th ST over Trimbelle River?

The structure is 47 ft (14.4 m) long with a longest span of 45 ft (13.7 m) and a deck 28 ft wide.

Who owns Lrd 870th ST over Trimbelle River?

It is owned by the Town or Township Highway Agency.