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TKDA <br /> <br />ENGINEERS · ARCHITECTS · PLANNERS <br /> <br />proposed top of rail elevations, rail weights, track lengths, crossing <br />locations, points of switch, typical cross-sections, horizontal and <br />vertical curve information and milepost locations will be prepared <br />for each of the specified track improvement projects. Separate plan <br />sets will be developed for each of the capacity improvements to <br />allow each to function as a stand-alone project. Preliminary cross <br />section sheets will be developed to determine construction limits <br />and earthwork quantities for those improvements that will require <br />subst .antial grading or may involve work outside of the existing <br />BNSF right-of-way. <br /> <br />BNSF's Standard Track Plans and Standard Construction <br />Specifications will be used as the basis for the development of these <br />preliminary plans. Where plans include items that are outside of <br />the above standards, TKDA will use the Minnesota Department of <br />Transportation and American Railway Engineering and <br />Maintenance of Way Association standards. <br />Crossing design will include sufficient roadway plan and profile <br />data to insure that the proposed track improvements are <br />compatible with the design speed of the roadway. <br /> <br />Plans will be prepared in Microstation format which is compatible <br />with Mn/DOT and BNSF standards. Geopak engineering design <br />software will be used to develop track plans, profiles and sections. <br /> <br /> Deliverables <br /> <br /> Review submittals of plans for the applicable track related <br /> improvements <br /> <br /> Preliminary geometric layouts of affected crossings <br /> <br />TASK 7: SIGNAL DESIGN <br />In the earliest stage of preliminary engineering, Twin City Signal <br />(TCS) will coordinate with the BNSF to blend the fifteen capacity <br />improvements proposed into a single end-to-end overview. The <br />older small-scale railroad profile plans will be redrawn in <br />accordance with BNSF standards, then colored to illustrate the <br />proposed new, systems. Concurrently, the proposed list of <br />specifications for final design will be prepared. TCS will coordin~ite <br />with TKDA to identify a workable construction-staging plan and <br />design the signal system accordingly. <br /> <br />A dedicated task force will be created to address the approximately <br />30 crossings which will require system upgrades. All crossings will <br />be surveyed and identified with the geometric characteristics of <br />both the track and roadway shown as well as existing and <br /> <br /> Pr®llminary Engineering Proposal <br />TOLTZ, KING~ Du~VALL, ANDERSON & ASSOCIATES,* INC. <br /> <br />54 <br /> <br /> <br />