Addison Creek Reservoir

The Addison Creek Reservoir was needed to control the amount of water that flows in and out of the creek to support other transportation improvements in the area and provide flood control. The storage reservoir is 90 feet deep with 30 feet of overburden soil and 70 feet in underlining bedrock. The reservoir provides 600-acre-feet of storage, reduces flooding to approximately 2,200 properties and provides more than $115 million in flood benefits to surrounding communities.

As part of the Christopher B. Burke Engineering team, IEI provided the preliminary engineering services, which consisted of three grading plans for the reservoir and surrounding property and areas for a spillway chute, access roads and truck driving facilities. The access roads had three alternate plans: from the top to the bottom of the reservoir, from Lake Street to the reservoir, and the best location for an entrance off Lake Street. Other offsite improvements consisted of peak hour turning movement counts, expected truck routes and the impact that construction vehicles had on adjacent roadways and intersections and propose improvements.