Complex sentence: Despite its number, I-278 does not connect to I-78; however, there were once plans to extend I-278 west to I-78 east of the Route 24 interchange in Springfield, New Jersey.
Split into simpler sentences: Despite its number, I-278 does not connect to I-78. There were once plans to extend I-278 west to I-78 east of the Route 24 interchange in Springfield, New Jersey.