Complex sentence: The New Turnpike started at a nail factory in Monroe to a crossing over the Ramapo River, and progressed eastward, passing Lake Stahahe (then known as Car Pond).
Split into simpler sentences: The New Turnpike started at a nail factory in Monroe to a crossing over the Ramapo River. The turnpike continued eastward, passing Lake Stahahe (then known as Car Pond).