US Bridges

IH 43 NB over Lrd Carvers Rock RD

Fair

Rock County, Wisconsin · 1.8M N JCT Sth 140 to N · Structure no. B53011600000000

Built
1975
50 years old
Condition
Fair
inspected March 2024
Type
Slab
Concrete Continuous
Length
114 ft
3 main spans
Daily traffic
9,400
2023 count
Owner
State
State Highway Agency

About this bridge

IH 43 NB over Lrd Carvers Rock RD is a concrete continuous slab carrying IH 43 NB over Lrd Carvers Rock RD in Rock County, Wisconsin. It was built in 1975, so it is 50 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 9,400 vehicles a day, roughly 10% of them trucks, projected to reach 11,280 by 2043. The structure is 114 ft (34.8 m) long and 43 ft wide.

Location

Open in Google Maps
CarriesIH 43 NB
CrossesLrd Carvers Rock RD
Location1.8M N JCT Sth 140 to N
RouteInterstate 43
CountyRock County
StateWisconsin
Coordinates42.57223, -88.83555
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 inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating55.8 US tons
Inventory rating32.2 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length114 ft (34.8 m)
Longest span52 ft (16 m)
Deck width43 ft (13 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic9,400 (2023)
Projected traffic11,280 by 2043
Trucks10%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed—
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 Carvers Rock RD built?

It was built in 1975, making it 50 years old in 2025.

What condition is IH 43 NB over Lrd Carvers Rock 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 March 2024.

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

About 9,400 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is IH 43 NB over Lrd Carvers Rock RD?

The structure is 114 ft (34.8 m) long with a longest span of 52 ft (16 m) and a deck 43 ft wide.

Who owns IH 43 NB over Lrd Carvers Rock RD?

It is owned by the State Highway Agency.