2005-02-02 P&R Packet - Laserfiche WebLink

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.. \ Ms. Kim Stephan, Park and Recreation Liaison City of Centerville January 12, 2005 Page 3 Roadway Right-or-Way County Road 14 and County Road 54 both have varying right-of-way widths for incorporating a trail corridor. Remaining right-of-way adjacent to the roadway varies from 12 -32 feet and in some areas this will prohibit the establishment of an 18 foot setback for the trail corridor which should occur where the posted speed limit is 50 mph. In addition to providing a safe buffer from the roadway, this setback allows for snow storage along roadway shoulders that will not impact trail circulation. Further review by Anoka County should be solicited to determine the most appropriate location of the trail corridor within the County Road 54 and County Road 14 right-of-ways. A representative cross section of County Road 54 and incorporating a trail within the right-of-way is shown in Figure 3. There are also several utilities located along the east side right-of-way of County Road 54, which include electric, gas, water and sanitary sewer. Many of these utilities should be compatible with trail construction. A more detailed inventory of existing underground utilities should be done to confirm the location of all public and private utilities to avoid potential conflicts with the location of the proposed trail alignment. Several drainage ditches located along the County Road 54 corridor should be avoided to minimize costs for constructing additional culvert pipe crossings for the trail corridor. Although nothing is currently outlined in the County CIP program, potential expansion of the County Road 54 corridor should be considered when determining alignment, elevations, and setbacks for the proposed trail. Locating the trail as close as possible to the edge of right-of-way will help minimize the potential for reconstruction of the trail corridor after expansion of the roadway. Roadway Crossings/Intersections Roadway crossings along the proposed trail alignments also need to be considered. Where possible, trail crossings should be established at controlled intersections or aligned with future roadway intersections. A trail crossing is currently proposed at County Road 54. To provide for user safety it is proposed that the crossing include signage giving both the trail user and vehicles on the cross street advance warning of the crossing. It is proposed that the crossings typically be a stop condition for the trail user. A representative signage and striping plan for a typical crossing of a roadway or driveway is shown in Figure 4. I-35E Interchange Improvements The connection of the trail corridor across the I-35E bridge along the south side of County Road 14 will have to be addressed when the interchange is reconfigured to serve higher traffic volumes. Mn!DOT has developed a preliminary concept layout for the reconfigured interchange (see aerial photo) but no timetable has been established for its construction. As part of the bridge reconstruction, a 12 - 14 foot separated shoulder or bridge crossing should be incorporated with the design of the new interchange bridge.