sentences:  After making another turn back to the north just outside O'Donnell, US 87 continues on to Lubbock, where it merges with I-27 on the south side of the city.From this point, US 87 continues as a co-signed, concurrent route with I-27 all the way north to Amarillo, occasionally deviating from the interstate route to spur into rural towns along the route (such as Kress, Tulia, and Canyon) before merging with US 287 in Amarillo.US 87/287 continues almost due north until Dumas, where US 87 splits off the route with a sharp turn to the west before merging with US 385 in Hartley and turning to the northwest.