Complex sentence: This highway was once connected to Interstate 85 from opening until 1995; that year, I-85 was moved north to bypass Spartanburg, leaving I-585 an orphan, segregated from the rest of the Interstate Highway system.
Split into simpler sentences: This highway was once connected to Interstate 85 from opening until ca. That year, I-85 was moved north to bypass Spartanburg, leaving I-585 an orphan, segregated from the rest of the Interstate Highway system.