sentences:  The road is 4-lanes for most of its length, narrowing down to two lanes north of Wyandotte Street.Its purpose is to divert traffic from the Ambassador Bridge (via Highway 3/Huron Church Road), by sending it to the Tunnel (Via Dougall Parkway, Dougall Avenue, to the Detroit-Windsor Tunnel, along Wyandotte Street to its Canadian terminus at Goyeau Street.Traffic onward into the United States generally continues onto Woodward Avenue, Detroit's "Main Street", which lies along the same alignment as Ouellette.