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US 12/18 Freeway Conversion Study
|View SW, US 12/18 Freeway Conversion Study - Dane County in a larger map.|
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US 12/18, I-39/90 (Madison) to County N (Cottage Grove), in Dane County.
- Extends approximately 3.5 miles.
- Identify the preferred alternative for converting US 12/18
from a 4-lane expressway to a 4-lane freeway.
- An expressway is a high-speed divided highway with partial access control. At-grade intersections, median crossovers, and some driveways are allowed.
- A freeway is also a high-speed divided highway, but direct access is allowed only at interchanges. Overpasses and frontage roads are used to provide connections for local traffic and to direct vehicles to the interchanges.
- Possible alternatives include:
- Addition of interchanges
- Grade-separated overpasses
- Frontage roads to connect local roadways
- Alternatives will be evaluated to determine the level of safety improvement, costs, right of way needs, land use, and environmental and local impacts.
- An Environmental Assessment (EA) to be completed as part of this study.
- Evaluate the impacts of converting US 12/18 to a freeway and to identify and preserve the recommended alternative.
Study with no construction activity at this time.
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Last modified: July 31, 2014
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