Jan. 31–GLADSTONE, Ill. — Construction has been underway at Lock and Dam 18 since December and is expected to wrap-up March 6.
Because of the construction, the public viewing and overlook area in Gladstone, Illinois on the Mississippi River has been closed to the public.
Lockmaster Mike Bielser said wells are being drilled through the floor of the lock chamber to relieve pressure there.
A synopsis of the $3.1 million project also states the lock will need to be “dewatered” after the relief wells have been installed “in order to test the wells and install pre-cast concrete well head blocks.”
Dewatering includes emptying river water out of the lock so the Army Corp of Engineers can inspect the infrastructure.
The wells are constructed of PVC pipe, measure eight inches in diameter and are about 35 feet deep.
Lock 18 is 110 feet wide by 600 feet long. It is part of the Rock Island District Mississippi River waterway, which is 313 miles long and includes 12 locks.