tunnels

Katie Blackley / 90.5 WESA


Traveling from Forbes Avenue on Duquesne University’s campus to the South 10th Street Bridge, drivers and pedestrians making a right into the Armstrong Tunnel encounter something unusual for a tunnel: a curve.

Katie Blackley / 90.5 WESA

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Cars rumble overhead as historian John Schalcosky trudges through crunching snow beneath the 40th Street Bridge in Lawrenceville. Gesturing toward the Allegheny River bank, he flicks on his iPhone flashlight.