US Bridges

IH 43 NB over Lrd Plank RD

Fair

Walworth County, Wisconsin · 2.0 MI N JCT Sth 11 · Structure no. B64010200000000

Built
1972
53 years old
Condition
Fair
inspected October 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
156 ft
3 main spans
Daily traffic
9,950
2022 count
Owner
State
State Highway Agency

About this bridge

IH 43 NB over Lrd Plank RD is a prestressed concrete continuous stringer/multi-beam or girder carrying IH 43 NB over Lrd Plank RD in Walworth County, Wisconsin. It was built in 1972, so it is 53 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 9,950 vehicles a day, roughly 17% of them trucks, projected to reach 11,940 by 2042. The structure is 156 ft (47.4 m) long and 48 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

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CarriesIH 43 NB
CrossesLrd Plank RD
Location2.0 MI N JCT Sth 11
RouteInterstate 43
CountyWalworth County
StateWisconsin
Coordinates42.69864, -88.49349
Functional classRural Principal Arterial - Interstate

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.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating48.6 US tons
Inventory rating28.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length156 ft (47.4 m)
Longest span69 ft (21 m)
Deck width48 ft (14.6 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic9,950 (2022)
Projected traffic11,940 by 2042
Trucks17%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed0.6 mi (1 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was IH 43 NB over Lrd Plank RD built?

It was built in 1972, making it 53 years old in 2025.

What condition is IH 43 NB over Lrd Plank RD 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 October 2023.

How much traffic does IH 43 NB over Lrd Plank RD carry?

About 9,950 vehicles per day (2022 count), of which roughly 17% are trucks.

How long is IH 43 NB over Lrd Plank RD?

The structure is 156 ft (47.4 m) long with a longest span of 69 ft (21 m) and a deck 48 ft wide.

Who owns IH 43 NB over Lrd Plank RD?

It is owned by the State Highway Agency.