 Prior to 1927 , the route was a branch of pre @-@ 1927 Route 6 , which had run south from Camden and split into two branches in Mullica Hill that ran to Salem and Bridgeton . In the 1927 New Jersey state highway renumbering , Route 46 was designated along the former branch of pre @-@ 1927 Route 6 that ran from Bridgeton to Mullica Hill . In the 1953 New Jersey state highway renumbering , which stated that no state route and U.S. route could share the same number , Route 46 was changed to Route 77 to avoid a conflict with US 46 in North Jersey . 
