Colorado State Highway 63

State Highway 63 (SH 63) is a 56.4 mi long state highway in northeastern Colorado. SH 63's southern terminus is at U.S. Route 36 (US 36) in Anton, and the northern terminus is at US 6 in Atwood.

Route description
SH 63 begins in the south at a junction with U.S. Highway 36 at Anton and proceeds north through remote, sparsely populated land for roughly 29 mi before reaching a junction with U.S. Highway 34 at Akron. From there, the route continues north for a further 24 mi to cross Interstate 76 at that highway's exit 115 and after roughly four more miles arrives at its northern terminus at U.S. Highway 6 in Atwood.

History
SH 63 was defined in the 1920s by the Colorado Department of Transportation, when it connected State Highway 96 in Haswell to Atwood at U.S. Highway 6. A gap appeared near Haswell in 1946. The section was later deleted by 1954, leaving its current routing from Anton to Atwood. This section was paved by 1961.