Bridge Project to Include Stormwater Controls

At its July 18, 2011 meeting, the Ann Arbor city council authorized petitions to the Washtenaw County water resources commissioner for the design and construction of stormwater controls as a part of the East Stadium bridges replacement project. The bridge project is expected to start construction in the fall of 2011.

The council authorized two petitions – one for the Allen Creek drainage district ($1,094,059 – with the city’s portion being $1,051,391) and the other for the Mallets Creek drainage district ($1,284,330 – with the city’s portion being $1,188,005).

The stormwater controls will provide for detention to slow the rate at which stormwater enters the two creeks. That will help reduce bank erosion and excessive runoff and washout. In addition, the stormwater controls will help remove E. coli, phosphorus, and other suspended solids that diminish the stream quality.

The city has been approved for a low-interest state revolving fund loan at an interest rate of 2.5%. The projects will be financed over the course of no more than 20 years. [Google Map showing watersheds and bridge construction location]

This brief was filed from the city council’s chambers on the second floor of city hall, located at 301 E. Huron. A more detailed report will follow: [link]