Building description 729 Sheridan Road is a two story, brick and block, mixed use building with one retail/office unit available for lease. The subject unit is +/- 1,000 sf. with potential to divide and huge windows on Sheridan Road (Route 137). The property is very well maintained and has been updated regularly over the years. Location description 729 Sheridan Road is located on the east side of Sheridan Road north of 8th Street and south of 7th Street in Winthrop Harbor, IL. Winthrop Harbor is located In Lake county IL midway between Chicago, IL and Milwaukee, WI. Great location to service clients from IL and WI call for details!