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HomeMy WebLinkAboutEngineering Dept Comments 3-1-11Bridges PUD Department of Engineering Traffic Comments 02/15/11 1. The Department of Engineering suggests the development of a master pedestrian circulation plan. 2. The proposed internal street roundabouts shall exhibit functionality, standard geometry, signage and striping of a modern roundabout. Splitter islands with pedestrian refuges shall be provided on each leg of each of the proposed internal roundabouts. 3. The Department of Engineering does not support the proposed roundabouts with five entry legs. The proposed inscribed diameter will only safely support four entry legs. 4. Dedication of right -of -way shall be required for future roundabout intersections at 111 Street and Springmill Road and 111 Street and Illinois Street. That right -of -way for future modifications to the existing roundabouts at 116 Street and Springmill Road and 116 Street and Illinois Street shall also be dedicated. 5. The Engineering Department requires right -of -way dedication sufficient to accommodate future roundabouts at the intersections on Springmill Road and Illinois Street if the traffic at these intersections is expected to satisfy the warrants for a traffic signal at "build out" conditions. 6. The Department is concerned with the proximity of the first access points of the internal roadways to 116 Street and Illinois Street as the proposed configuration could result in traffic stacking out onto the perimeter streets. 7. The developer shall ensure that adequate sight distance is provided for Entrance F. 8. The Department suggests that proposed rights -of -way widths indicated in the PUD be revised as follows: a. 116 Street: Please indicate "Existing It is apparent that the existing right -of -way is consistent with or greater than the 75 -foot half required by the Thoroughfare Plan. b. 111 Street West: Please indicate a 50 -foot half right -of -way to be consistent with the existing platted right -of -way on the south side of this segment of 111 Street. c. As it will be necessary for Illinois Street to be constructed simultaneously with this development in order to accommodate necessary access to each phase of the development, it is feasible for Illinois Street to be constructed within a 100 -foot right -of -way provided that the Illinois Street contractor is allowed right -of -entry by the adjacent property owner. 9. The Department requires that Entrance B be restricted to right -in /right -out access only, the combination and alignment of Entrances D and E and that Entrance F be a full access intersection providing access to the future development of the Valinet property. 10. The Department does not support the stop controlled intersection recommended for 111th Street and Illinois Street in the Traffic Study. The Thoroughfare Plan stipulates a roundabout intersection which will be necessary at development buiidout and connection of Illinois Street south to 111 Street. 11. As discussed, the Department is requesting certain improvements be made to the intersection of 116th Street and US -31 to accommodate additional development traffic. 12. The Department recommends a right -in /right -out access from the development to 111 Street near the midpoint between Springmill Road and the future Illinois Street. 13. The Department suggests that Entrance G be eliminated in the long -term in favor of shared access with the Valinet property when it develops. Bridges PUD Department of Engineering PUD Ordinance Comments 02/15/11 1. Will the development install the street trees in the Illinois Street right -of -way? 2. Street lights in perimeter road rights -of -way shall be City standard and reviewed by City. 3. The lighting of the interior roundabouts shall be consistent with City standards. 4. No landscaping or tree preservation easements shall be overlaid with utility, drainage, signage or other use easements. Such easements shall be reserved solely for landscaping and tree preservation and shall not provide any others right to use such easements. 5. PUD Section 10.1 (J). The elimination of the curbing shall be subject to review and approval by Engineering to ensure that elimination of curbing is indeed necessary for the proper function of the proposed storm water treatment system. Also, do we want to require parking bumpers in instances where curb is deleted? 6. Pedestrian connectivity shall be provided for all internal east -west streets. A minimum of three east -west pedestrian connections shall be provided in the Development Plan. 7. 10 -foot multi -use path shall be constructed along the entire perimeter of the site. Pedestrian connectivity to this perimeter path from the internal pedestrian system shall be provided at as many points as reasonable. 8. As we have discussed, we will need to review the proximity of any detention facilities to the right -of -way. 50- feet separation or a barrier is required by the current City Standards. 9. The pedestrian access at the northeast corner of Springmill Road and 111 Street cannot direct persons diagonally into the intersection. 10. With the future plans for a median along Springmill Road, there is no need for the proposed "pork chop" at Entrance I. 11. The Department requests that the entrance to the parking field south of the E -W street from Entrance D/E and east of Illinois Street be moved as far to the east as possible. Bridges PUD Department of Engineering Traffic Study Comments 02/15/11 1. Please compare the difference in traffic volumes from the development if developed under the current S -2 zoning and if developed as proposed. 2. Please evaluate the impact to the LOS at various entrances due to the recommended access reconfiguration on Illinois Street and the other internal traffic pattern changes. 3. Please include a right -in /right -out only access on 111th Street between Springmill Road and Springmill Lane.