US Bridges

Lrd Mirror Lake RD over Harrison Creek

Good

Sauk County, Wisconsin · 0.7M E JCT Sth 23 · Structure no. B56013100000000

Built
1996
29 years old
Condition
Good
inspected September 2024
Type
Slab
Concrete
Length
27 ft
1 main span
Daily traffic
147
2024 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

Lrd Mirror Lake RD over Harrison Creek is a concrete slab carrying Lrd Mirror Lake RD over Harrison Creek in Sauk County, Wisconsin. It was built in 1996, so it is 29 years old, younger than the Wisconsin average of 40.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 147 vehicles a day, projected to reach 161 by 2043. The structure is 27 ft (8.1 m) long and 26 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

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CarriesLrd Mirror Lake RD
CrossesHarrison Creek
Location0.7M E JCT Sth 23
RouteCity Street 0
CountySauk County
StateWisconsin
Coordinates43.55421, -89.83724
Functional classRural Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionSeptember 2024
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating73.9 US tons
Inventory rating44.6 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length27 ft (8.1 m)
Longest span24 ft (7.3 m)
Deck width26 ft (7.9 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic147 (2024)
Projected traffic161 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 Mirror Lake RD over Harrison Creek built?

It was built in 1996, making it 29 years old in 2025.

What condition is Lrd Mirror Lake RD over Harrison Creek in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in September 2024.

How much traffic does Lrd Mirror Lake RD over Harrison Creek carry?

About 147 vehicles per day (2024 count).

How long is Lrd Mirror Lake RD over Harrison Creek?

The structure is 27 ft (8.1 m) long with a longest span of 24 ft (7.3 m) and a deck 26 ft wide.

Who owns Lrd Mirror Lake RD over Harrison Creek?

It is owned by the Town or Township Highway Agency.