There are various stories about how Pennsylvania became the “Keystone State.” The truth seems to be mostly hidden in the mists of time. There are a number of… ...

The keystone to his art. By James Prichard . Feb. 3, 2006 12 AM PT . Share via Close extra sharing options. ... “Herd of Arches,” a series of 11 self-supporting stone arches, ...

A keystone arch bridges a gap such as those along the West Branch of the Westfield River. (Meredyth Babcock photo ) CHESTER –The first cluster of stone arch railroad bridges built in America are ...

The first stone bridge we come to is still in use by the CSX Railroad and is the only double arch located here. Historically it is the second along the line, as the first was washed away by the flood ...

But the main attraction remains the bridges, stone without mortar, piled to form an arch until the sides meet at the wedge stone that holds all in place. The hike extends 5 miles roundtrip. The ...

The keystone is the most important component of an arch. However, it is also the component that endures no stress — and, typically, responsibility and stress go hand in hand.