County Route 577

County Route 577 (CR 577) is a county highway in the U.S. state of New Jersey. The highway extends from CR 509 in Westfield to Route 23 and Bloomfield Avenue (CR 506) in Verona. Route description CR 577 begins at the intersection of Springfield Avenue and East Broad Street (both part of CR 509) in the northern reaches of Westfield. The county road first heads northwest on Springfield Avenue but then curves to the north-northeast. After passing mostly residential neighborhoods, it passes the entrance to the Echo Lake Country Club. The road crosses the Nomahegan Brook and crosses partially into Mountainside then fully into Springfield Township where it passes businesses and apartment complexes. After an interchange with U.S. Route 22 (US 22), CR 577 proceeds further into Springfield Township passing houses, schools, and small businesses. The road name changes to Meisel Avenue and then approaches a complex intersection with Route 82 (its western terminus) and Route 124, both of which carry Morris Avenue. CR 577 has a brief concurrency with Route 124 through the traffic circle-like intersection where Maple Avenue carries the nominal route northbound while Meisel Avenue carries the southbound traffic. From this intersection, the route heads north as two-lane undivided Main Street. After crossing over Interstate 78 (I-78), the road enters Millburn, Essex County where the road becomes municipally maintained. The road runs through suburban residential developments. In Millburn, CR 577 reaches a junction with CR 527, at which point the route turns east onto a one-way pair that is county maintained. Northbound CR 577 follows three-lane Millburn Avenue and southbound CR 577 follows two-lane Essex Avenue on this pairing, which passes through the commercial downtown of Millburn. At the end of the one-way pair, the route becomes four-lane undivided Millburn Avenue and continues east through a mix of homes and businesses. At the Wyoming Avenue intersection, CR 577 turns northeast onto that road while CR 630 continues along Millburn Avenue.