Agenda - Economic Development Authority - 10/09/2014

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CONCEPTS CONSIDERED constructed first which would grade separate westbound through traffic. The eastbound flyover would then be constructed at a later date in Project 3-2-2b. Alternatively, they both could be built at the same time resulting in savings up to $3 million by reducing the amount of retaining wall and length of the bridges. 3. Ramsey Blvd. Overpass with Right-In/Right-Out - Projects 3-3-1, 3-3-2, and 3-3-3 Instead of reconstructing mainline Highway 10 to change grade, an option would be to bring Ramsey Blvd. over the highway and provide right-in/right-out access to and from the bridge. This option would also achieve grade separation with the railroad tracks, providing a second access to Highway 10 near The COR unimpeded by the possibility of train delays. Project 3-3-1 could be built first to remove the left turns at the Ramsey Blvd. signal by creating a form of a quadrant intersection. The westbound 3/4 left turn would be phased out when projects 3-3-2 and 3-3-3 are built which would add the overpass as well as full right-in/right-out access. 4. Local Street Overpass with Right -In Right -Out - Projects 3-4-1 and 3-4-2 Lastly, continuous flow in both directions could be achieved by converting Ramsey Blvd. into a right -in/ right -out intersection only and by accommodating north and south through movements and all left turns via a local street overpass of Rhinestone St.. Project 3-4-1 would build the local street overpass which would tie Rhinestone St. and The COR to Traprock St. south of the highway. Project 3-4-2 could follow which would convert Ramsey Blvd. to a right-in/right- out and connect McKinley St. through to provide additional connectively to Sunfish Lake Blvd.. The City of Ramsey expressed concerns about this overpass as it could prevent development from occurring on the south side of the highway. For this reason, the Rhinestone St. overpass was officially removed from further consideration. This project could be constructed without the local overpass, however north and south through traffic as well as westbound and northbound left turns would not be served at this location. 5. Ramsey Blvd Railroad Underpass Grade separation of the railroad at Ramsey Blvd (CSAH 56) is a priority for Anoka County. This concept provides an option to include railroad grade separation in conjunction with the High-T and Flyover concepts at Highway 10. There are several challenges with a railroad underpass at Ramsey Blvd. The design speed required to fit the vertical curves into the distance between the railroad and Highway 10 is 30 mph, which is lower than the 55 mph posted speed along the segment. In addition, the grade sloping up to Highway 10 is over 5 percent, which poses issues for vehicles waiting at the traffic signal, especially with winter road conditions. None- theless, grade separation at the railroad could be achieved independent of grade separation of Highway 10. Subarea 4 — Sunfish Lake Blvd (CSAH 57) The CAP-X initial screening of the Sunfish Lake Blvd intersection showed some grade separation would be nec- essary to achieve capacity improvements. HIGHWAY 10 ACCESS PLANNING STUDY 53