 The highway extends 9.77 miles (15.72 kilometers) from the Boonton Turnpike (US 202) in Wayne to Union Avenue (CR 511) in Wanaque.The southern of this highway from the intersection of US 202 and Route 23 in Wayne to the highway's split with US 202 in Lincoln Park are an example of a wrong-way concurrency, as northbound CR 511 ALT is concurrent with southbound US 202, and vice versa.Despite its name, County Route 511 Alternate only intersects its "parent" at its eastern terminus, while its western terminus is quite far apart from its parent.