Minutes - Public Works Committee - 05/16/2006

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Case #3: Consider Change Order for Improvement Project 05-22 Ramsey Town Center Phase 2 Segment 1 City Engineer Jankowski explained this project includes the construction of Civic Center Drive between Zeolite and Sapphire Streets. One element of this street includes a "bump out" in the street section to accommodate the bus loading zone in front of the municipal parking structure. Concrete pavement is required through the area that busses will be braking and accelerating to prevent rutting and shoving that would be anticipated if bituminous pavement were utilized. The plans called for a 10 foot wide concrete bus parking section on the south side of the street, but made an accommodation for only a five foot segment on the north side. If constructed in this manner only the right side on the bus wheels would be braking on concrete pavement. Mr. Jankowski stated in order to rectify this deficiency two options have been considered. He provided an overview of the following two options for replacing the bituminous pavement along Civic Center Drive adjacent to the new parking ramp: · Option One would be to mill out the base course of bituminous pavement adjacent to the concrete and place a seven foot concrete section adjacent to the existing concrete curb. This would provide a wide enough width to provide an adequate section for stopping buses. However, this section would result in having a concrete section protruding into an otherwise bituminous pavement on the north side of the street for a distance of approximately 180 feet. On the south side of the street the concrete for the bus stop is located entirely south of the extension of the curb line leading into the bus stop "bump out". Although functional, there are aesthetic concerns with this alternative. The estimated cost for this option is $11,635.00. It is suggested that the concrete section be tapered for a more streamlined appearance. · Option Two would be to place a full width concrete section through a 250 foot section of Civic Center Drive, by removing 37 feet of the bituminous base course and replacing it entirely with a concrete section. The estimated cost for this option is $106,128.00. Public Works Director Olson noted this "bump out" should likely have been included in the original design work; however, it was not made obvious until the need was noted when viewing it in the field. Staff recommends proceeding with Option One. He noted the buses may not be needed in this area in a few years if the trains begin to mn in this area. Chairperson Elvig inquired who designed this street section without including the bump out. Public Works Director Olson replied it was designed by the consultant. Chairperson Elvig inquired if there will be a long tenn effect associated with the reworking of this street segment, and about the responsibility of the consultant for any associated costs. Public Works Director Olson replied he does not believe there will be any leaks created that potentially may not have been there, as a seal and expansion joint will be included during construction. Regarding the responsibility of the consultant, in the past the City has not taken it to the level of requiring the consultant to pay for additional materials if there were something that would have had a cost associated with it had it been originally included in the design. That Public Works Committee / May 16, 2006 Page 12 of 16