US Bridges

Lrd S Porcupine LA over Kelly Brook

Good

Oconto County, Wisconsin · 1.4M S JCT Cth a · Structure no. B42005000000000

Built
1992
33 years old
Condition
Good
inspected September 2024
Type
Slab
Concrete
Length
42 ft
1 main span
Daily traffic
50
2022 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

Lrd S Porcupine LA over Kelly Brook is a concrete slab carrying Lrd S Porcupine LA over Kelly Brook in Oconto County, Wisconsin. It was built in 1992, so it is 33 years old, younger than the Wisconsin average of 40.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 50 vehicles a day, projected to reach 55 by 2043. The structure is 42 ft (12.8 m) long and 26 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesLrd S Porcupine LA
CrossesKelly Brook
Location1.4M S JCT Cth a
RouteCity Street 0
Coordinates44.9368, -88.13229
Functional classRural Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure8 Very GoodNo problems noted.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionSeptember 2024
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than 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 rating77.4 US tons
Inventory rating46.4 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length42 ft (12.8 m)
Longest span40 ft (12.2 m)
Deck width26 ft (7.9 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic50 (2022)
Projected traffic55 by 2043
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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 S Porcupine LA over Kelly Brook built?

It was built in 1992, making it 33 years old in 2025.

What condition is Lrd S Porcupine LA over Kelly Brook in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in September 2024.

How much traffic does Lrd S Porcupine LA over Kelly Brook carry?

About 50 vehicles per day (2022 count).

How long is Lrd S Porcupine LA over Kelly Brook?

The structure is 42 ft (12.8 m) long with a longest span of 40 ft (12.2 m) and a deck 26 ft wide.

Who owns Lrd S Porcupine LA over Kelly Brook?

It is owned by the Town or Township Highway Agency.