Bennett's Mill Covered Bridge was built in 1855 by brothers Benjamin Franklin (BF) and Parmaly Bennett, both master carpenters. Its original beams were sawn at the nearby sawmill from native hemlock trees. The bridge piers were made from stones from the nearby Globe Furnace, which the brothers operated for several years before closing it to dam Tygarts Creek for their grist and saw mill; remains of the dam are visible about 500 feet downstream, and the furnace site can be seen through the bridge to the left at a raised mound of earth. Some original beams are still present, but replacement beams are spruce from Oregon. Restored in 2004 at a cost of one million dollars, it was designed and built 25 years before the Wheeler Truss Bridge patent was issued in 1880. The bridge was built to accommodate the Bennett brothers' mill customers who lived on the other side of the creek. It was the first and only bridge for 99 miles from its source to the Ohio River, has a calculated load-bearing capacity of 28,000 pounds, and is the oldest, longest, single-span covered bridge open to traffic in the world.