WATCH: Heart-Dropping Video Shot Atop New Letchworth Bridge

CASTILE – Breathtaking video from atop the in-progress railroad bridge above the upper falls puts the internet right in the construction site.

New structure is visible on both sides of the gorge. As we watch, a train passes on the existing trestle bridge just 75 feet to the north of where the new bridge will stand. The classic bridge will continue to be in use throughout the project.

The clip was originally posted by Facebook profile Mark McKean.

Bridge construction broke ground Oct. 28, 2015 and is expected to carry on through December 2018. The work won’t be over then, though. Norfolk Southern, which owns the rail and bridge, will construct 1,200 feet of new track on either side of the Genesee River gorge to align existing tracks with the new bridge.

Norfolk Southern is taking on the project alongside the New York State Department of Transportation, and the New York State Department of Parks, Recreation and Historic Preservation and numerous other supporters.

The Norfolk Southern Railway subsidiary operates approximately 20,000 route miles in 22 states and the District of Columbia, serves every major container port in the eastern United States, and provides efficient connections to other rail carriers. Norfolk Southern operates the most extensive intermodal network in the East and is a major transporter of coal, automotive and industrial products.

You can watch 6 months of the bridge construction in 2 minutes and 11 seconds in a Work Zone Cam time lapse video here.