Many earth retaining structures such as bridge abutments, culverts, tunnels, spillways, and the various types of retaining walls in North America and around the world are aging and in need of maintainable/serviceable options and/or replacement. Failure to provide proper Hydrostatic Pressure Relief results in water being trapped behind these structures causing erosion, structural pressure, and eventual failure. Often, logistics, time and funding forces states, counties, municipalities, and consumers to triage these structures, to make the best use of available resources, which may leave some structures without options. Erosion in and around any of these structures can be mitigated with the use of JET Filter System Maintainable/Serviceable Weep Hole Drains, extending the service lives of these structures. The Hydrostatic Pressure can be released without taking the valuable soil, which can lead to sink holes, etc. and eventual structural failure, and then easily maintained/serviced as needed. The purpose of weep holes is to relieve hydrostatic pressure from the earth behind the structure. The JET Filter System Maintainable/Serviceable Weep Hole Drains can be easily installed and most importantly maintained, on an accessible face of a new, or even existing earth retaining structures. As a former marine contractor, creator, inventor and President of JET Filter System, David Gentry has been providing maintainable/serviceable weep hole drains throughout North America and the world to contractors, engineers, and homeowners. For additional information on JET Filter System Maintainable/Serviceable Weep Hole Drains, contact David Gentry at 239-825-4508, or visit http://www.jetfiltersystem.com.