PORTS® Data Listing: 8545556 Ben Franklin Bridge Air Gap, PA

The air gap measurements have been updated to reflect the ongoing long-term construction on the Ben Franklin Bridge. The real-time air gap data displayed on CO-OPS’ web page now represents the distance from the bottom of the Safespan scaffolding to the water surface AT the green center channel navigation light. For additional information specific to the navigation channel, please see the latest local USCG Notice to Mariners.