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exiting to the west on Sunwood Drive to facilitate movement into the left turn lanes which is the critical movement through the Armstrong/Sunwood intersection. The roundabout is designed to accommodate 18-wheel truck traffic (WB65). The roundabout was also analyzed to determine its capacity to handle traffic volumes that exceed the projected build -out forecasts. The proposed enhanced single lane roundabout can handle traffic volumes that are 43% greater than the build -out forecasts. The proposed roundabout can also be easily modified to a full two lane roundabout that would be able to accommodate volumes 63% greater than the build - out forecasts. Figure 2 also shows the improvements that would be needed to construct the full two lane roundabout if The COR generates traffic in excess of current projections. �h Figure 3: Initial and Ultimate Roundabout Design (Ourston Roundabout Engineering) Initial Roundabout Design Sunwood Drive Ultimate Roundabout Design Sunwood Drive is a Municipal State Aid (MSA) collector street. It runs in an east/west direction through the southern portion of The COR connecting Ramsey Boulevard to Armstrong Boulevard. The current Armstrong/Sunwood intersection needs to be closed because of the grade differential that will be created by the TH10/Armstrong Interchange. The new location for the Armstrong/Sunwood intersection is further north along Armstrong Boulevard near the point where the extension of Ramsey Parkway was originally planned to intersect. The new Armstrong/Sunwood intersection improves the traffic flow on Armstrong Boulevard and into The COR by consolidating traffic at a single, better located intersection than originally proposed in the RTC plans. The proposed realignment of Sunwood Drive is presented in Figure 4. City of Ramsey Sunwood Drive L A NDF ORM Project No. RAM11008 Page 5