Continuing east-southeasterly along Washtenaw Avenue, M-17 meets the southeast corner of the EMU campus at Oakwood Avenue. The highway follows the southern edge of campus to Cross Street, where the highway splits to follow a one-way pairing of streets. Eastbound M-17 continues along Washtenaw Avenue while westbound traffic follows Cross Street. Eastbound traffic turns southward at Hamilton Street for two blocks before turning east along Michigan Avenue, meeting westbound Bus. US 12. The two highway designations merge, running concurrently through downtown Ypsilanti. The section of Michigan Avenue between Hamilton and Huron streets is actually a wrong-way concurrency because although it is a two-way boulevard, the eastbound direction is M-17 and the westbound direction is Bus. US 12. Both directions of traffic for both highways rejoin at Huron Street, as the westbound M-17 traffic uses Huron Street north to Cross Street and westbound Bus. US 12 turns south along Huron Street. Northeast of the Huron Street intersection is Riverside Park. Michigan Avenue forms the extreme southern park boundary just before it crosses the Huron River. At Ecorse Road, M-17 turns south in Ypsilanti Township through a residential area, separating from Bus. US 12. Ecorse Road turns east four blocks north of I-94/US 12 and runs parallel to the freeway. Past Harris Road, US 12 turns northeasterly on a separate expressway. Where it meets Ecorse Road, US 12 follows Ecorse Road, replacing M-17. This junction marks the eastern terminus of M-17 west of Willow Run Airport.