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<br /> ARDEN HILLS CITY COUNCIL - NOVEMBER 10. 1997 5 <br />. With regard to timing and funding, Mr, Tolaas advised that Mn/DOT has a vested interest to <br /> have a grade separation at Highways 10 and 96 since it provides relief to the freeway system. He <br /> commented on access options to the Arsenal property if an overpass is constructed. Mr. Tolaas <br /> stated there is some implication that if relief is provided with grade separation at Highway 10, <br /> the State may "buy into" cost participation for the freeway intersection interchange. He advised <br /> it will cost about $3.6 million to upgrade the I-35W/Highway 96 interchange to standards, <br /> Mr. Tolaas reviewed a question raised about future capacity needs at 1-35W and if the ramps can <br /> handle the additional ramp access requirement which is currently being shared at these two <br /> intersections. <br /> Mr. Erickson reviewed several traffic circulation scenarios and explained that they have looked <br /> at traffic volumes and a forecast of20 years into the future to assure it is a good expenditure of <br /> public funds. The project has been forecasted out to the year 2020 since the earliest it can be <br /> constructed is the year 2000. Looking at that, they believe traffic volumes can be handled, Mr, <br /> Erickson explained that the interchange will function at the service level of "C/D" without <br /> development of the Twin Cities Army Ammunition Plant (TCAAP) which is considered an <br /> acceptable level with flowing traffic without delays oflonger than a single cycle, He noted that <br /> this is more efficient because it would be a three-phased signal rather than the current eight-phase <br /> signaL <br />. Mr. Tolaas explained that they are not looking for a decision tonight, but wanted to provide an <br /> update to both the Council and residents with regard to impact and cost estimates of this latest <br /> option. He stated there are three viable solutions but it is a matter of which is more acceptable. <br /> He explained that all are acceptable with regard to environmental impact <br /> Mr. Erickson advised the project estimate today is about $7.2 million without the grade <br /> separation and $8.3 million with the grade separation. <br /> Mayor Probst asked if City approval is needed for the grade separation option. <br /> Mr. Erickson stated that, to do a project of this nature, it generally requires a municipal <br /> resolution of concurrence of the project He stated there is an avenue for the State to override <br /> municipal approvals, but it is a longer process. <br /> Mayor Probst inquired about the option of depressing Highway 10 and leaving Highway 96 at its <br /> current elevation. He noted the triangular section of property within Arden Hills and the <br /> significant visual barrier that will result if Highway 10 passes over Highway 96. Mayor Probst <br /> requested that this option be considered, <br /> Mr. Erickson explained the current option is to leave Highway 10 at grade which will provide <br /> enough profile for Highway 96 to go under Highway 10. The elevation change of Highway 96 <br />. east of Highway 10 would be at 3% and be accomplished before the Church entrance. <br /> Mayor Probst asked if the interchange would incorporate a cloverleaf design and if it would <br /> accept right-on and right-off traffic movements, Mr. Erickson stated this may be possible in the <br /> southeast quadrant since the traffic volumes making that movement are quite low. <br />