US Bridges

Lrd Rockport RD over Markham Creek

Fair

Rock County, Wisconsin · 0.3M E JCT Sth 11 · Structure no. B53015200000000

Built
1989
36 years old
Condition
Fair
inspected July 2024
Type
Culvert
Concrete Continuous
Length
22 ft
2 main spans
Daily traffic
1,759
2024 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

Lrd Rockport RD over Markham Creek is a concrete continuous culvert carrying Lrd Rockport RD over Markham Creek in Rock County, Wisconsin. It was built in 1989, so it is 36 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 1,759 vehicles a day, projected to reach 1,855 by 2043. The structure is 22 ft (6.8 m) long. If it were closed, the detour would be 0.6 mi (1 km).

Location

Open in Google Maps
CarriesLrd Rockport RD
CrossesMarkham Creek
Location0.3M E JCT Sth 11
RouteCity Street 0
CountyRock County
StateWisconsin
Coordinates42.67189, -89.10803
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
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating43.2 US tons
Inventory rating25 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length22 ft (6.8 m)
Longest span10 ft (3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,759 (2024)
Projected traffic1,855 by 2043
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed0.6 mi (1 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 Rockport RD over Markham Creek built?

It was built in 1989, making it 36 years old in 2025.

What condition is Lrd Rockport RD over Markham Creek 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 July 2024.

How much traffic does Lrd Rockport RD over Markham Creek carry?

About 1,759 vehicles per day (2024 count).

How long is Lrd Rockport RD over Markham Creek?

The structure is 22 ft (6.8 m) long with a longest span of 10 ft (3 m).

Who owns Lrd Rockport RD over Markham Creek?

It is owned by the Town or Township Highway Agency.