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Constructed from Chitina 60 miles east to its terminus at the Kennecott mines in the winter of 1910–1911, the CR&NWRy crossed two deep gorges. Over the Kuskulana River at mile 17, CR&NW engineer A.C. O'Neill designed a steel deck truss bridge 540 feet long, comprised of three Pratt truss spans. Over the Gilahina River at mile 28.5, CR&NW foreman Pat O'Brien designed an 800-foot-long wooden trestle, which was built in eight days. After a fire destroyed it in 1915, it was rebuilt in ten days. The rails were removed from the McCarthy Road in the 1940s, and the unpaved road is now open to vehicular traffic.