 Route 77 is a state highway in the southern part of the U.S. state of New Jersey . It runs 22 @.@ 55 mi ( 36 @.@ 29 km ) from an intersection with Route 49 in Bridgeton , Cumberland County north to a junction with Route 45 in Mullica Hill , Gloucester County . It is a mostly two @-@ lane , undivided road traversing through farmland in Cumberland , Salem , and Gloucester Counties . Along the way , Route 77 intersects Route 56 in Upper Deerfield Township and U.S. Route 40 ( US 40 ) in Upper Pittsgrove Township . 
