Complex sentence: The "Great Freshet", or spring flood, was the most destructive of the 19th century, carrying away the Penobscot River covered bridge, two bridges over the Kenduskeag Stream, and inundating a hundred shops and many houses.
Split into simpler sentences: The "Great Freshet", or spring flood, was the most destructive of the 19th century. It carried away the Penobscot River covered bridge, two bridges over the Kenduskeag Stream, and inundating a hundred shops and many houses.