DCPREZ-0000-01479 - Laserfiche WebLink

Home Browse Search

MAR-09-1998 15 04 DANE COUNTY RPC 608 266 9117 P.02 'yI ,I�I,gin'. ��, bane County Regional Planning Commission "' J g l M l Btu y' ''IMI III 217 S. Hamilton Street, Suite 403, Madison, Wisconsin 53703-3238 �� Telephone: 608/266-4137 Fax: 608/266-9117 E-Mail: dcrpcadm®execpc.com l [l a-. Mil M In-01 Memorandum TO: Mark Roffers,Dane County Planning&Development Senior Planner FROM: Bob McDonald,Director of Transportation Planning DATE: March 9, 1998 RE: Transportation Issues Related to Proposal for 44 Unit Residential/Commercial Project, Town of Westport,Nick Ladopoulos In response to your memo of March 4, 1998,I have the following comments to make regarding the topic above: 1. The estimate of the average daily traffic(353 ADT)to be added to CTH M from the proposed Yahara Crossing Center development is too low. The reason it is too low is because the assumption of the amount of pass-by traffic already on CTH M diverting to the commercial and convenience stores is too high. Assuming a trip reduction factor of 16%to 25%for the mixed-use component and a reduction factor of 25%for the capture rate for the convenience store,the total additional vehicle trips to CTH M would range from 1,382 to 1,428 per day. Even if we assumed an unlikely capture rate of 50%for the convenience store.the total additional vehicle trips to CTH M would be 1,165 per day. Most studies of a capture rate rarely exceed 50%, 2. In 1996,CTH M had a traffic count of 16,400 ADT in this area This is very high for a rural two-lane roadway,and is an indicator of significant congestion in the peak hours. At this volume the gaps in the traffic stream are significantly reduced in the peak hours malting it difficult for vehicles to enter CM M from side streets and driveways. 3. Until a major investment study is conducted for the north ring corridor,the long-range regional transportation plan assumes CTH M as a local,four-lane arterial street In the short-term,intersection improvements are recommended along CTH M from CTH K to STH 113. As a four-lane,local arterial street,C1Ti M is forecasted to cany 30,000 to 36,000 vehicles per day by the year 2020 between CTH K and STH 113. The long-range plan also recommends official mapping of the CTH M corridor. The County's with ring committee recommended the official mapping of this segment of CTH M at 300 feet in width with the additional width on the north side of CTH M. 4. The type of intersection improvements(i.e.Type A,Type B,etc.)depends on expected traffic movements of a particular roadway intersection and engineering design standards. John Norwell is in a better position to respond to this aspect of your information request. If you have any questions concerning the above responses,please do not hesitate to give me a call. c.c.John Norwell TOTAL P.02