center turn lane passing through rural forest land. M-20 picks up inclusion on the NHS from this point east. Once M-20 reaches Midland on Jerome Street, it crosses the Tittabawassee River north of the Tridge, a three-legged bridge over the confluence of the Tittabawassee and Chippewa rivers. There it joins Business US 10 (Bus. US 10) on a pair of one-way streets: Indian Street (westbound) and Buttles Street (eastbound). The two streets pass by Dow Diamond, home to the Great Lakes Loons, the city's minor league baseball team. Bus. US 10/M-20 then passes some Dow Chemical Company buildings and curves into a freeway stub connecting with the US 10 freeway on the east side of town. This short section of business loop freeway has two interchanges before terminating at one final interchange. At this junction, both Bus. US 10 and M-20 have a common eastern terminus. Traffic headed eastbound on the business loop defaults onto eastbound US 10, and traffic destined for the business loop is fed from the westbound direction of the freeway only. History Previous designation On July 1, 1919, M-20 was routed from Ludington to Bay City, Michigan by way of Reed City and Clare. This routing was redesignated as US 10 on November 11, 1926. M-20 would be moved to a new routing. Current designation The M-20 designation was moved to a new alignment, roughly today's current routing from Midland through Mt. Pleasant, Big Rapids and White Cloud continuing to Muskegon. The western terminus was extended to end at Muskegon State Park in 1932. The last paving would be completed along M-20 in 1957 in Newaygo County. The eastern end of M-20 was converted to freeway between Midland and Bay City in 1958. The former alignment along Midland Road, from Midland, going through Auburn, and ending at Euclid Avenue in Bay City, at the junction of what was then US 23, was returned to local control at the time. US 10 was rerouted along this freeway section and the Interstate 75/US 23 freeway in 1960. M-20 was truncated back to Midland with the US 10 rerouting. The west end was rerouted through Muskegon to end at US 16 in 1961. The former routing connecting to Muskegon State Park became a new state route designated M-213. M-213 was ultimately removed from the trunkline system in 1970. M-20 was completely rerouted on the west end in 1969 from