Northglenn Drainageway Remediation Project and Trail Replacement

Project Description
In 2010, the City of Johnston completed a Watershed Assessment and Stormwater Management and Action Plan for the entire community. This plan identified 10 priority projects that were needed to address erosion, protect public and private property and improve water quality. One of these projects identified was the Northglenn Drainage Way. The Northglenn neighborhood drains to a long grassed channel that runs parallel to a city bike trail on the southern side of the development. Since its construction, maintenance of this stream channel has been difficult due to standing water and pour overall drainage through the area. This project would address the area east of Merle Hay Road. The channel is very flat and constantly has standing water. It will also rise quickly with large storm events. Several attempts have been made to improve the channel through minor regrading, tiling and other efforts. This project will seek larger solutions to address the constant maintenance issues caused by the flat nature of the drainage way.

Additionally, four trail segments have been identified for removal and replacement within the area. In these areas, the asphalt trail will be removed and replaced with a concrete trail of approximately the same width. This will create a smoother trail with fewer maintenance needs.

Project Area Map
Click here (PDF) to view the map

Project Open House
A letter (PDF) has been mailed to area residents regarding the specific trail alignment/reconstruction for the north/south segment of trail that runs south from Morningside Drive until it comes to the T intersection. Two opportunities are available to address this particular trail segment:

Public Meeting
February 6, 2020
5:30 p.m.
Crown Point Community Center
6300 Pioneer Parkway
Johnston, IA 50131

Onsite Walk
February 19, 2020
5:00 p.m.
Meet at Morningside Park

Estimated Cost
Stormwater Improvements - $450,000
Trail Improvements - $400,000

Schedule
Construction beginning Spring 2020 completion by September 30, 2020

Contractor
Caliber Concrete
Adair, Iowa

Engineer
Evan Del Val PE, CFM
Civil Engineer
508 East Locust St.
Des Moines, IA 50309
P: 515.243.9143
C: 619.817.5524
evan.delval@is-grp.com

City Staff Project Contact
David Wilwerding, AICP
Community Development Director
City of Johnston
515.727.7775
Email David Wilwerding