Complex sentence: There seems to be ample space (between mile markers 67.89 and 68.12) to build a new interchange because there's a large piece of land that would accommodate a toll gate and interchange ramps for 133.
Split into simpler sentences: There seems to be ample space (between mile markers 67.89 and 68.12) to build a new interchange. There's a large piece of land that would accommodate a toll gate and interchange ramps for 133.