Interstate 540 & Bobby Hopper Tunnel

To complete I-540, later re-designated as I-49 by the Arkansas Department of Transportation, through northwest Arkansas, Garver's design created a path through some of the most rugged sections of the Boston Mountains. To make this 22-mile stretch accessible to travelers via a four-lane highway, Garver’s design included more than two miles of bridge structure of various configurations, some of which were 200 feet above ground, and Arkansas’s first highway tunnel. Consisting of two parallel, reinforced, concrete-lined mined-rock, the tunnels help motorists pass through almost 1,400 feet of sandstone and shale, opening up a stretch of interstate that connects a growing region with the rest of the state.