sentences:  There is also a Southern Pacific vertical lift bridge connecting the two municipalities.This stretch of water lends its name to Vessel Traffic Service Berwick Bay which manages the waters south of 29°45' N., west of 91°10' W., north of 29°37' N., and east of 91°18' W. These waters include the junction of the Gulf Intracoastal Waterway, the Port Allen-Morgan City Alternate Route and several tributary bayous.Narrow bridge openings and a swift river current require one-way traffic flow through the bridges.