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TKDA <br /> <br />suggested changes needed to accommodate the railroad warning <br />devices and vehicular traffic control signals at each location. <br />Crossing design will be influenced by location of passenger station <br />stops. Every crossing will be surveyed and the resulting database <br />made available to all regulating engineering and governmental <br />agencies. Because Mn/DOT must ultimately determine the <br />adequacy of all.railr.oad crossing_ waming_.devices, a preliminary <br />design proposal will be submitted to Mn/DOT for each crossing. <br /> <br />Along with the continual coordination with the BNSF throughout <br />the preliminary engineering process, a preliminary draft of the <br />major portions of the resignalization plan will be submitted to the <br />BNSF at least 45 days prior to the completion of preliminary <br />engineering documents. This will allow a reasonable time frame for <br />the BNSF to make a thorough review prior to final submittal and <br />allow them sufficient time to make comments. <br /> <br /> Deliverables <br /> <br /> Review submittals of plans for the applicable signal related <br /> improvements <br /> <br /> Preliminary design proposals for each affected crossing <br /> <br />TASK 8: STRUCTURES <br />The list of capacity improvements included within this RFP will <br />inv. olve the construction or modification of four (4) bridges and one <br />sizeable retaining wall. These include: <br /> <br />44th Avenue Bridge over Northtown Yard - pier modification to <br />accommodate 2~d main track <br /> <br />Bridge 16.9 over Rice Creek - new construction to accommodate 3rd <br />main track <br /> <br />Bridge 16.6 over Mississippi Street - extension to accommodate 3ra <br />main track <br /> <br />Bridge 26.9 over 7· Street - extension to accommodate 3rd main <br />track <br /> <br />Retaining wall along the east side of the west abutment of the 44m <br />Avenue Bridge over Northtown Yard - construction to <br />accommodate second main track <br /> <br />Preliminary plans will be prepared, using current BNSF and <br />Mn/DOT standards, for each structure. Because design of structure <br />foundations requires a higher level of geotechnical investigation, <br />we have estimated three deep soil boring investigative holes at each <br /> <br /> Preliminary. Engineering Proposal <br />TOLTZ, KING, DUVALL, ANDERSON <~. ASSOCIATES, INC. <br /> <br />55 <br /> <br /> <br />