Bobby Hopper Tunnel

The Bobby Hopper Tunnel is a highway tunnel on Interstate 49 in Arkansas, just north of the Crawford—Washington county line. It opened in 1999 to four lanes of traffic. No toll is charged.

The tunnel's twin bores are each 1,595.2 feet long, 38 feet wide and 25 feet tall , allowing for two lanes of traffic and shoulder space in each bore. A prominent feature of the tunnel is the noticeably inclined gradient of each bore and its associated roadway. Southbound traffic experiences a significant descending gradient inside the tunnel, while northbound traffic experiences a corresponding ascending gradient. Cross-passages occur every 265 feet allowing for five emergency ways in. Besides paved openings, the tunnel has traffic signals, lighting, message signs, carbon monoxide monitors, fire protection, and closed-circuit television systems to monitor traffic remotely at the Fort Smith highway department district headquarters.

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