http://www.waterwayguide.com/waterway-planner?ll=36.7170833333,-76.1011000000&z=13 Mariners are advised that the S165 (Swing) Bridge, at AICW mile 20.2, across North Landing River at Chesapeake VA will be closed to vessels requiring an opening, each day between the hours of 7 AM and 5 PM, on TUE, 1 APR 2014 and on WED, 2 APR 2014 to facilitate urgent replacement of bridge electrical cables. In the closed position, the available vertical clearance is approximately 6 feet, above MHW. At all other times, the drawbridge will operate in accordance with the regulations set out in Title 33 Code of Federal Regulations Part 117.1021. Vessels desiring to transit the AICW during the closure may use the AICW-Alternate Route, Great Dismal Swamp Canal. The controlling depth of the canal is 6 feet. The Great Dismal Swamp Canal locking hours are 8:30 AM, 11:00 AM, 1:30 PM, and 3:30 PM. Vessel operators may contact Mr. Joel Scussel at 757-201-7642 regarding the Great Dismal Swamp Canal latest project conditions or the Albemarle and Chesapeake Canal closure. Lock and bridge operators will monitor Channel 13. CLICK HERE FOR MORE FROM THE WATERWAY GUIDE> To avoid delays, mariners are advised to plan their trips accordingly.