Commencing at a point in Sunbury, Northumberland County, and running thence by way of Shamokin Dam, and Selinsgrove into Middleburg, Snyder County, and also by spur from Shamokin Dam, along the west side of the Susquehanna River, to the entrance of the free bridge across the Susquehanna River, to the borough of Northumberland; thence across said bridge; thence from the east end of said bridge in the borough of Northumberland to a junction with route number two from Sunbury to Danville and route number eighteen from Sunbury to Williamsport.
36 P.S. § 996