The Wisconsin Department of Transportation (WisDOT) is a state agency responsible for overseeing the transportation system in Wisconsin. Its main duties include maintaining and improving highways, managing public transit, and ensuring the safety of transportation infrastructure. WisDOT also works on planning and funding transportation projects to enhance mobility for residents and visitors. In addition to roadways, WisDOT is involved in the regulation of airports, railroads, and waterways within the state. The agency collaborates with local governments and other organizations to develop transportation policies and programs that support economic growth and environmental sustainability in Wisconsin.