Hank Aaron State Trail was also paved along the Menomonee River to return public access to the waterway. In 2013, the 24-acre Three Bridges Park opened on a former rail yard site along the south bank of the Menomonee River between 27th and 35th streets, incorporating the improved trail as well as new bridge crossings and freshly planted native vegetation. Using leftover fill from the Marquette Interchange reconstruction project, the new park also includes landforms shaped to resemble typical glacial features from the area's geologic past, such as kames, drumlins, and eskers. The abandoned Milwaukee Road yards have been made into a business park with an innovative storm water runoff buffer using native plants. The $20 million brownfield project has been called the city's "largest environmental clean up in history." Two of the landmark smoke stacks standing in Chimney Park to memorialize what were once the largest rail yards in the nation have since been torn down because they were too unstable. Harley-Davidson built a $75 million Harley-Davidson Museum at 6th & Canal Streets, which broke ground on June 1, 2006. It houses the company's vast collection of historic motorcycles and corporate archives, along with a restaurant, café and meeting space. In 2015, the City of Milwaukee adopted the area plan Menomonee Valley 2.0 led by LA DALLMAN, the Wisconsin and Boston-based architecture practice of Grace La and James Dallman, in collaboration with numerous stakeholders and members of the community. This updated plan includes the newly created nonprofit Menomonee Valley Partners, along with replacing the 6th St viaduct with bridges that extend access into the valley, and redevelopment of the former Milwaukee Road Shops sites into the Menomonee Valley Industrial Center. See also Neighborhoods of Milwaukee 2006 Falk Corporation explosion References Sources The Menomonee Valley: A Historical Overview by John Gurda External links Menomonee Valley Partners, Inc Menomonee Valley Benchmarking Initiative UWM photo collection Menomonee River Valley in Milwaukee Neighborhoods Guide from UWM Library Milwaukee's Industrial Valley Lands New Tenants Valleys of Wisconsin Geography of Milwaukee Neighborhoods in Milwaukee River valleys of the United States Landforms of Milwaukee County, Wisconsin