Complex sentence: The Petersburg tollhouse is one of three surviving tollhouses for the National Pike; the remaining ones are the LaVale tollhouse located between Cumberland and Frostburg, Maryland and the Searight's tollhouse located just west of Uniontown on Route 40.
Split into simpler sentences: The Petersburg tollhouse is one of three surviving tollhouses for the National Pike. The others being LaVale tollhouse located between Cumberland and Frostburg, MD and the Searight's tollhouse located just west of Uniontown, PA on Route 40.