Wills Creek was bridged at the west end of the Cumberland Narrows with a four arch brick structure that stood until removed for flood control in 1998. The railway included two tunnels, the one closest to Cumberland (lower tunnel) being long, and the upper tunnel being long. The tunnels were separated by . The grade (slope) reached 3 percent in places. This branch was also the location of a large horseshoe curve, at Clarysville, with 180 degrees of a 30-degree curvature. The construction of Interstate 68 from the Vocke Road intersection to the bridges at Clarysville removed most of the evidence of the Eckhart Branch railroad in that area, including the tunnels.