Description of Demonstration:
M-DOT Engineering, “Current evaluation of site has identified ongoing maintenance issues due to fill leaching from the existing weep holes during high water events. The original sand/gravel filter behind each weep hole is no longer effective, so nothing is holding back the fill. Some holes have been plugged with concrete or rubber stoppers to prevent fill from leaching, but this does not allow the culvert to function as originally designed with weep holes relieving hydrostatic pressure from behind the culvert walls.
Program Application: Maintainable Weep Hole Filters – ITD Application
Fred Droski, P.E.
1345 Monroe Ave., Suite 136
Grand Rapids, MI 49505