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General Project Overview
From June 20th to November 4th, 2011, the Wisconsin Department of Transportation will be conducting a full reconstruction of the on/off ramps at the 151-Main Street interchange, as well as the driving lanes underneath the 151 overpass at this location. In addition the City of Sun Prairie will be completing a reconstruction of the O'Keeffe Ave. intersection with Main Street, and the driving lane on O'Keeffe Ave. between Main Street and Sunfield Street. The project specifically includes:
- Reconstruction and realignment of the off ramp from 151 north to Main Street to a signalized intersection with a controlled right turn movement. This will eliminate the existing direct merging of off ramp traffic on to Main Street.
- Reconstruction (including new paving) and signalization of the remaining ramps.
- Reconstruction (including new paving) of the drive lanes on Main Street under the overpass.
- Reconstruction (including new paving) and new signalization of the O'Keeffe-Main Street intersection.
- Reconstruction (including new paving) of the drive lanes on O'Keeffe between Main Street and Sunfield Street.
- Temporary signals at Clarmar Drive.
Important note: Driving lanes on Main Street, the northbound off-ramp to Main Street and the southbound on-ramp to 151 are to remain open during construction. The northbound on-ramp and the southbound off-ramp will be closed for a three week period. Notice of this closure will be provided in this update.
Detailed project maps and design information is available at City Hall (300 E. Main St.) or the project office at 1632 W. Main St. The following image is an approximation of where construction wil be occuring:
 | | This image is to illustrate the approximate locations of where work will be occurring on this project. |
Pending Work for Week of June 20th
WisDOT and the City of Sun Prairie West Main Street - 151 Interchange and O'Keeffe Ave reconstruction projects will begin Monday, June 20th. The contractor for both the City project and the WisDOT project is R.G. Huston out of Cottage Grove. Traffic control devices including the placement of barrels and the installation of temporary signals at Clarmar Drive will be done early next week.
Immediate work will include reducing traffic to one lane in each direction on West Main Street. Starting the week of June 20th, traffic west of O'Keeffe Ave. will be moved to the outside lanes, and traffic east of O'Keeffe Ave. will be moved to the north side of Main Street while temporary pavement will be placed to accommodate future stages of construction.
Also starting at some point during the week of June 20th, west bound traffic will not be permitted to take a left turn on to O'Keeffe Avenue. Traffic trying to get to businesses normally accessed by O'Keeffe Avenue and McCoy Road will be directed to utilize Clarmar Drive and Sunfield Street for their access. | 
