The draw of the Conrail bridge, mile 1.1, the Church Street bridge, mile 1.3, and the Sixteenth Street bridge, mile 1.7, all at Wilmington, need not be opened for the passage of vessels. [CGD 82-025, 49 FR 17452, Apr. 24, 1984, as amended by CGD3 85-42, 50 FR 26712, June 28, 1985]