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<br /># . '") <br />On : r ,., <br />r.., J,. ~..&. ....., <br />EAST PORTAL ROBERTS TUNNEL (Altitude 8,671 feet) <br /> <br />Location: - At Grant, Colorado on North Fork of South Platte River about 65 miles <br /> <br />west of Denver via U. S. Highway 285. <br /> <br />/3, P.!J7 Z.~ <br />Built: - Tunnel now under construction. Heading 18,888 feet or about t-:-e miles <br /> <br />tlunl! /, /957 <br />underground. FEeY~aIY 19S7. <br /> <br />Cost: - See Roberts Tunnel, <br />