US Bridges

Lrd County Line RD over Marengo River

Fair

Bayfield County, Wisconsin · 0.2M S JCT Cth E · Structure no. P04091400000000

Built
1925
100 years old
Condition
Fair
inspected August 2024
Type
Stringer/Multi-beam or Girder
Concrete
Length
43 ft
1 main span
Daily traffic
49
2024 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

Lrd County Line RD over Marengo River is a concrete stringer/multi-beam or girder carrying Lrd County Line RD over Marengo River in Bayfield County, Wisconsin. It was built in 1925, 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 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 49 vehicles a day, projected to reach 51 by 2043. The structure is 43 ft (13.2 m) long and 23 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

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CarriesLrd County Line RD
CrossesMarengo River
Location0.2M S JCT Cth E
RouteCity Street 0
CountyBayfield County
StateWisconsin
Coordinates46.41209, -90.92462
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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating50.4 US tons
Inventory rating25 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadH 15
Structure length43 ft (13.2 m)
Longest span41 ft (12.6 m)
Deck width23 ft (6.9 m)
Roadway width19 ft (5.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic49 (2024)
Projected traffic51 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 County Line RD over Marengo River built?

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

What condition is Lrd County Line RD over Marengo 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 August 2024.

How much traffic does Lrd County Line RD over Marengo River carry?

About 49 vehicles per day (2024 count).

How long is Lrd County Line RD over Marengo River?

The structure is 43 ft (13.2 m) long with a longest span of 41 ft (12.6 m) and a deck 23 ft wide.

Who owns Lrd County Line RD over Marengo River?

It is owned by the Town or Township Highway Agency.