City Council Meeting Date: January 14, 2020
To: Mayor and City Council
City Administrator
From: Sean M. Simonson, Engineering Manager
David Bennett, Public Works Director/Engineering Manager
Title
2020 Mill and Overlay Final Plan Discussion.
Body
Action Requested:
The Northfield City Council discusses the Final Plans for the 2020 Mill and Overlay Project.
Summary Report:
The goal of tonight's work session is to share the final draft plans, discuss project design details, and review input received at the neighborhood meeting in preparation for approving the final plans and authorized bidding on January 21, 2020.
Drainage Analysis and Recommended Improvements (Attachment 1)
The drainage analysis, has been completed for the project. The following items have been identified, and corrections are noted:
* Potholes/Flat Cross Slope Roads
o Paving will correct potholes and flat Cross-Slope road that hold water by re-establishing the crown in the road.
* Curb Settlements/Cracks
o Spot replacement of curb and gutter will correct settlements and cracks that currently hold water.
* Flat Areas/Improper Drainage
o Added catch basins in areas where grades would not allow streets to drain properly.
o This will improve the drainage, however on flat streets drainage will be slow if there is snow, ice, and leaves build up in the gutters.
Tree Removals (Attachment 2)
Staff hired a Licensed Arborist to complete a tree impact assessment on all of the trees located within the Right-of-Way. The Arborist rated the trees on a 0 - 9 scale, 0 being a dead tree, and 9 being a perfect tree. Staff used these ratings, combined with the plan specifics from the Emerald Ash Borer Management Plan discussed at City Council in July of 2017 to compile a list of trees recommended for removal along the Project Corridor. The guidelines for removal are based on the following guidelines:
* Ash Trees with a Diameter at Breast Height (DBH) less than 13 inches regardless of condition (...
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