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. Gno~ ~vvl Union Pacific Railroad Relocation Before foundation preparations can be completed on the Narrovs Dam in the vicinity of the river outlet conduits, the Union Pacific Railroad must be relocated. The work must be accomplished without interrupting service on the main Chicago-Denver line of the Union Pacific System. Subject to negotiations with the railroad company, it is planned to build 32.22 miles of new line around the north side of the reservoir to replace 30.34 miles of existing railroad along the north bank of the river. The proposed location of the relocated railroad is shown on exhibit 2. The railroad company's standards for new in the feasibility layout and cost estimates. and 133 pound rails are provided. construction were used Rolled embankments . The maximum degree of curvature of the new line is 00 - 30', and the maximl~ gradient is limited to 0.30 percent. Data furnished by the railroad provides for a drainage ditch with the bottom 3 feet below the top of the subgrade. The ditch bottom was set at the elevation of the crest of the dam--elevation 4453 at a point near the left abutment where the railroad emerges from a deep cut into the reservoir area. The railroad sub grade for the relocation at this point would then be at elevation 4456 or 3 feet above the crest of the dam. Where the railroad follows the north shore of the reser- voir, the minimum subgrade elevation was held at elevation 4431.5, three feet above the top of the flood control pool. Typical sections furnished by the Union Pacific Railroad Company are shown on exhibit 8. Betterments in the relocated line due to meeting new construction standards will be adjusted during negotiations with the railroad company. Adjustments for salvage should also be made at that time. Road Relocations . Four roads which cross the South Platte River in the reservoir area will be abandoned. New river crossings will be provided at the upstream end of the reservoir and at the downstream end of the reservoir on the crest of the dam. These two crossings are part of the required relocation of State Highway No. 144, vhich at present crosses the river about one-half mile upstream from the damsite; goes through the towns of Weldona, Goodrich and Orchard; and crosses the river again about one-half mile south of Orchard. The plan as shown on exhibit 2 is to relocate the highway along the crest of Narrows Dam across the river, thence along the crest of Riverside Dike, thence around the north side of the reservoir paralleling the relocated Union Pacific Railroad to the river cross- ing at the upper end of the reservoir, and thence south to a junction with U. S. Highway No. 34 for a total of 26., miles. 23