The Mon Wharf Switchback Ramp is complete! The night-time view shows the ramp lit-up for evening use. The Mon Wharf Switchback Ramp is a Riverlife project that connects trail users using the Smithfield Street Bridge, Eliza Furnace “Jail Trail” and Great Allegheny Passage safely and smoothly down to the eastern end of the Mon Wharf Landing, a linear park along the Monongahela River in downtown Pittsburgh, Pennsylvania.