that US-259 and SH-87 overlap to Idabel, but officially, this is not the case, and ODOT signage does not reflect a concurrency.

US-259 bypasses Idabel to the south and east, concurring with U.S. Highway 70 Bypass. East of Idabel, the bypass route ends, and US-259 begins a concurrency with mainline US-70 and SH-3. The three highways continue north to Broken Bow,