US Bridges

Lrd Bridge ST over Black Earth Crk

Fair

Dane County, Wisconsin · 0.3M N JCT Cth Y · Structure no. B13035000000000

Built
1984
41 years old
Condition
Fair
inspected September 2024
Type
Slab
Concrete Continuous
Length
75 ft
2 main spans
Daily traffic
431
2022 count
Owner
City
City or Municipal Highway Agency

About this bridge

Lrd Bridge ST over Black Earth Crk is a concrete continuous slab carrying Lrd Bridge ST over Black Earth Crk in Dane County, Wisconsin. It was built in 1984, so it is 41 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 431 vehicles a day, projected to reach 474 by 2043. The structure is 75 ft (23 m) long and 37 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesLrd Bridge ST
CrossesBlack Earth Crk
Location0.3M N JCT Cth Y
RouteCity Street 0
CountyDane County
StateWisconsin
Coordinates43.17967, -89.79553
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 protection8 Very GoodNo problems noted.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy6: Equal to 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 spans2
Design loadH 20
Structure length75 ft (23 m)
Longest span37 ft (11.2 m)
Deck width37 ft (11.3 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic431 (2022)
Projected traffic474 by 2043
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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 Bridge ST over Black Earth Crk built?

It was built in 1984, making it 41 years old in 2025.

What condition is Lrd Bridge ST over Black Earth Crk 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 September 2024.

How much traffic does Lrd Bridge ST over Black Earth Crk carry?

About 431 vehicles per day (2022 count).

How long is Lrd Bridge ST over Black Earth Crk?

The structure is 75 ft (23 m) long with a longest span of 37 ft (11.2 m) and a deck 37 ft wide.

Who owns Lrd Bridge ST over Black Earth Crk?

It is owned by the City or Municipal Highway Agency.