History & local legend
The crossing of Hallston Run on St. John Road near Slippery Rock is the setting of a Butler County story known as Deadman's Bridge. In the account collected by The Shadowlands, approaching drivers see headlights and hear a vehicle coming toward them.
The lights then disappear, leaving an empty road, while the approaching sound changes to screams. Local lore connects the encounter with a husband and wife said to have died in a wagon accident at the crossing.
The present bridge dates to 2007.
Sources
- The Shadowlands, Pennsylvania index, Slippery Rock, Deadmans Bridge. Names St. Johns Road, headlights, sounds and the couple in the wagon story
- Federal Highway Administration, 2025 National Bridge Inventory, Pennsylvania structure 000000000044259, T-414 St John Rd over Hallston Run
- OpenStreetMap contributors, St John Road and the railroad crossing immediately north of Hallston Run
