Tractor-trailer flips coming off the Ben Franklin Bridge, tying up traffic Published Skyfox over the Ben Franklin Bridge where a tractor trailer flipped. OLD CITY - Anyone traveling into Philadelphia using the Benjamin Franklin Bridge Monday saw a mess navigating their way off the bridge Monday night. A tractor-trailer flipped on its side around 8 p.m., at the curve of the base of the bridge, coming into the city. For a time, three left lanes were blocked, causing traffic to back up into New Jersey. A similar accident happened on