Complex sentence: The East Busway is set in a valley that separates Bloomfield from Polish Hill, the Hill District and Shadyside; the neighborhoods are within sight of one another, and are connected by the Bloomfield Bridge and the South Millvale Bridge, both of which span this gap.
Split into simpler sentences: The East Busway is set into an existing valley that separates Bloomfield from Polish Hill to the west, the Hill District to the southwest, and Shadyside to the south. The neighborhoods are within sight of one another, and are connected by the Bloomfield Bridge and the South Millvale Bridge, both of which span this gap.