Vessels requesting an upbound double lockage with a spike barge on the head at Wilson Lock main chamber must position the spike barge on the port or starboard head in order to catch towing lines. By having the spike barge on the port or starboard head the barge will be positioned in line with the concrete barriers designed to protect the upper lift gate.
If the first cut is locking four barges and the spike barge is positioned in the center of the first cut, vessels will be required to not pass the 125-foot marker.
Wilson Lock is located at Tennessee River mile 259.4 on the Tennessee River in Florence, Alabama. For more information, call the lock at 256-764-5223.