US 18, County BB Interchange
Client

Wisconsin Department of Transportation (SW Region)

Location

Iowa County, WI

Total Estimated Cost

$9.5 Million

DAAR provided construction management services for the $9.5 million rural interchange construction project on US 18.

This project received the 2019 Wisconsin Transportation Builders Association - Grading Award.

This 1.89 mile project consisted of the construction of a new diamond interchange on US 18, construction of 4.5 miles of frontage road, one mile of bike path, a roundabout and structures B-25-173,174 & 175. This project was constructed in stages with 3 traffic switches over two construction seasons.

Major items of work included:
• Removals
• Excavation common
• Excavation Rock excavation
• Base aggregate
• Concrete pavement
• HMA pavement
• Roundabout
• Culvert pipe
• Curb and gutter
• Storm sewer
• Concrete barrier
• Beam guard
• Pavement marking
• Landscaping items
• Signing

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