The Skew Arch Bridge was built to carry the Huntingdon, Cambria, & Indiana Turnpike, the forerunner of Route 22, over the tracks of the Allegheny Portage Railroad. This bridge was required because the turnpike and railroad crossed paths along the length of Incline Plane #6 and therefore a standard wooden railroad crossing would not work because of the ropes of the incline. The privately-run turnpike also required the state-run Portage to build the bridge at the exact angle the turnpike crossed the railroad. The state had actually started to build the bridge at a much-easier-to-build right angle to the railroad, which they then had to tear down and start over at the correct angle. The construction journal of May 21, 1833, notes the expense of “taking up and relaying of masonry in consequence of alteration in place.” Fenlon, Darlin, & Co. was the contractor and the bridge was completed at a cost of $2327.44. The bridge continued to be used until the early 20th century and actually carried automobile traffic. Make sure to examine the spiraling stonework on the underside of the arch. The skills of the stonemasons are very evident there. If you reached the bridge by way of the trail, please be careful crossing the highway on your way back.