 East of Washington Street and Saginaw Road, the highway transitions from one-way streets to a freeway; the transition between the eastbound freeway and Patrick Road passes through a roundabout in the Saginaw Road interchange. As the freeway continues eastward, there is a partial interchange for Waldo Road, and then the highway crosses into the section of Midland that is located in Bay County. Immediately east of the county line, Bus. US 10 and M-20 jointly terminate at a directional interchange with US 10; traffic on the eastbound business loop defaults onto eastbound US 10, and traffic on the westbound business loop originates on westbound US 10. According to the Michigan Department of Transportation, the agency which maintains the roadway, between 7,317 and 23,733 vehicles per day used the business loop on average daily in 2013. The section of Bus. US 10 that runs concurrently with M-20 has been listed on the National Highway System, a network of roads important to the country's economy, defense, and mobility.
