Complex sentence: Upon crossing the Poquessing Creek, US 1 leaves Philadelphia and enters Bensalem Township in Bucks County and becomes Lincoln Highway, heading past businesses and narrowing to six total lanes at the Old Lincoln Highway intersection.
Split into simpler sentences: Upon crossing the Poquessing Creek, US 1 leaves Philadelphia and enters Bensalem Township in Bucks County. At this point, the road becomes Lincoln Highway, heading past businesses and narrowing to six total lanes at the Old Lincoln Highway intersection.