06-24-1991 Council Packet - Laserfiche WebLink

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wit .I L r* f. f'f'i !^- ..V k'' *’ f'. r." .•■ :k 'r :L DrlAF" TH 12 CORRIDOR STUDY Policy Committee Minutes Maple Plain City Hall May 22, 1991 Members Present; M. Johnson, T. Humbert, G. Acromite, M. Alger, D. Poss Alternates Present! K. Gabriel, M. Bemhardson Others Present! S. Hay, L. Dallam, R. Harris, S. Rettinger, R. Peterson, W.D. MacMillan. S. Noerenberg-Smith, C. Laurence, G. Jabbour, G. Wunderlich, W. Griffith, R. Schueur S. Hay called the meeting to order at about 4:05 p.m. The minutes from the January 23. 1991 meeting were approved as submitted. Hay stated that the primary focus of the meeting was to update the committee on preliminary traffic forecasts prepared by the consultant. L. Dallam then distributed and presented the traffic forecasts. He explained the background and process from which the forecasts were prepared - including meeting with the staff of Independence, Orono and Medina to determine future land use and travel charaaeristics. He stated that the Metropolitan CounciPs 1988 model predicted too much traffic on TH 12 and TH 55, so HNTB calibrated it by reducing the number of trips in some of the zones. He then compared the 1988 daily traffic volumes predicted by the c^brated model with the actual measured traffic counts in 1988. The prediaed traffic along TH 12 and TH 55 were within 10% of the measured traffic. Dallam also noted that local trips were not included in the predicted traffic ^ only those trips that travel from one zone to another were included This, in part, accounts for very low volumes on some secondary roads. For the 2010 traffic forecasts, he stated thr* the 2010 population and employment forecasts prepared the Metropolitan Council were then applied to the calibrated model using the 1988 trip reduction factors. The 2010 traffic forecasts are considered conservatively low, because the Metro Council’s population and employment forecasts are generally less than the municipalities’ in the study area. One of the purposes of the 2010 forecasts is to determine if each of the alternatives under consideration can solve the problem (i.e. accommodate the forecasted traffic on TH 12 at an acceptable level of service). 2010 No»Build Alternative (No Expansion of TH 12) HNTB assumed that the growth of communities along Highway 12 west of Hennepin County is directly related to the upgrading of Highway 12 and therefore there will be less traffic east of Delano in the No>Build Alternative than in the Build Alternatives. Dallam said that the 1988 average daily traffic of 9,300 vehicles east of Delano would increase to 12,600 in the No*Build and 16,300 in the Build Alternatives - based upon historical trends. The TH 12 traffic in Long Lake east of CR 146 would increase from 18,900 in 1988 to 23,900 ~ resulting in more congestion and long delays at the intersection and along the highway. Traffic on local and county roads would increase and continue to carry non-local