Green Meadows West Central Channel Stabilization Project

Project Map

Click here (PDF)

Construction Plans

Upstream of Foxboro Road (PDF)

Downtown of Foxboro Road (PDF)
Final Plan (PDF)

Estimated Cost

$1,948,000 (engineering and construction)

3. Green Meadows West Channel Stabilization

Project Status

Should you wish to receive regular construction updates as the project progresses, please provide your email address to

On November 6, 2017, the Johnston City Council awarded the construction contract for the project to Synergy Contracting, LLC from Bondurant, Iowa. Synergy and their subcontractors will be responsible for completing the project. Construction is anticipated to begin the week of November 13, 2017, with progress throughout the winter with a targeted completion date of May 31, 2018.

The following is a brief construction status as of January 22, 2018.
4. Green Meadows West Channel Stabilization

The first phase of the project, the easternmost portion of the project closest to Beaver Creek, is complete except for some final grading, this will occur as they work on the second segment and have excess soil available to move to this phase.

The contractor has finished most of the grading needed in the second phase, which is the central portion of the channel between Foxboro Road and Beaver Creek.  Toe rock/rip rap is being installed on both sides of the stream through the second phase of the project currently.  The contractor plans to have the rock placement and riffles within this phase completed within the next 2 weeks, depending on weather.

The current plan is to begin construction within phase 3, the area immediately east of Foxboro Road at the outlet of the box culvert which drains under Foxboro Road around the week of February 5.

To ensure the construction occurs within the designed parameters, the City has contracted HR Green to provide a Construction Inspector who will be onsite monitoring construction activity anytime the contractor is working. Josh Babcock is the Construction Inspector who will be onsite, should you have questions or concerns during construction he can be reached at 515-205-5731.

Construction access to the project will be provided via Foxboro Road to the eastern portion of the project and Foxboro Road and Hadfield Circle for the western portion of the project. This activity will require increased truck traffic and intermittent lane and sidewalk closures. Please use caution as you are traveling through this area.

We recognize this construction is occurring in your backyards and we will work with the contractors to do everything we can to limit disruption to your neighborhood. However, the project will require large construction equipment and take several months to complete, so we ask for and appreciate your patience throughout the project.


Design Engineering: December 2016-Fall 2017
Project Letting: November 2017
Construction: November 13, 2017 to May 2018
Contractor: Synergy Contracting, LLC of Bondurant, Iowa


Kyle Riley, P.E., CFM
HR Green
5525 Merle Hay Road, Suite 200
Johnston, IA 50131

City Staff Project Contact

David Wilwerding, AICP
Johnston Community Development Director
Email David Wilwerding

Project Description

This drainage channel is located on outlots owned by the Green Meadows West Homeowners Association, and runs between Hadfield Circle and Heather Bow west of Foxboro Road and Heather Bow and Tiburon Circle east of Foxboro Road. The purpose of the project would be to correct erosion and to stabilize the stream banks from the outlet of the storm sewer project completed in 2010 easterly to Beaver Creek.

Project Funding

The Green Meadows West Central Channel Stabilization stormwater improvements are funded by the Johnston Stormwater Utility, which was implemented in July 2012 to create a dedicated funding source for projects that reduce erosion, protect properties and infrastructure from flooding and to improve water quality within the City of Johnston, for more information on the stormwater utility, visit the stormwater projects page.