US Bridges

Lrd Porcupine RD over Trappe River

Fair

Marathon County, Wisconsin · 0.6M N JCT Cth G · Structure no. B37026300000000

Built
1993
32 years old
Condition
Fair
inspected September 2024
Type
Slab
Concrete Continuous
Length
74 ft
2 main spans
Daily traffic
57
2024 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

Lrd Porcupine RD over Trappe River is a concrete continuous slab carrying Lrd Porcupine RD over Trappe River in Marathon County, Wisconsin. It was built in 1993, so it is 32 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 57 vehicles a day, projected to reach 60 by 2043. The structure is 74 ft (22.6 m) long and 26 ft wide. If it were closed, the detour would be 6.8 mi (11 km).

Location

Open in Google Maps
CarriesLrd Porcupine RD
CrossesTrappe River
Location0.6M N JCT Cth G
RouteCity Street 0
CountyMarathon County
StateWisconsin
Coordinates45.09766, -89.42706
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionSeptember 2024
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating66.6 US tons
Inventory rating39.2 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length74 ft (22.6 m)
Longest span36 ft (11 m)
Deck width26 ft (7.9 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic57 (2024)
Projected traffic60 by 2043
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.8 mi (11 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 Porcupine RD over Trappe River built?

It was built in 1993, making it 32 years old in 2025.

What condition is Lrd Porcupine RD over Trappe 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 September 2024.

How much traffic does Lrd Porcupine RD over Trappe River carry?

About 57 vehicles per day (2024 count).

How long is Lrd Porcupine RD over Trappe River?

The structure is 74 ft (22.6 m) long with a longest span of 36 ft (11 m) and a deck 26 ft wide.

Who owns Lrd Porcupine RD over Trappe River?

It is owned by the Town or Township Highway Agency.