#tunnel #TunnelEngineering The Eisenhower Tunnel, officially the Eisenhower–Edwin C. Johnson Memorial Tunnel, is a dual-bore, four-lane vehicular tunnel in the western United States, approximately 60 miles (97 km) west of Denver, Colorado. The tunnel carries Interstate 70 (I-70) under the Continental Divide in the Rocky Mountains. With a maximum elevation of 11,158 feet (3,401 m) above sea level, it is one of the highest vehicular tunnels in the world. The tunnel is the longest mountain tunnel a

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The Eisenhower-Johnson Memorial Tunnel (EJMT) on I-70 in Colorado's Rocky Mountains is a vital, high-elevation twin-bore tunnel system that carries traffic under the Continental Divide, connecting the eastern and western slopes of the state. The westbound bore (Eisenhower) opened in 1973, and the eastbound bore (Johnson) opened in 1979, making it the highest point on the Interstate Highway System at an average elevation of 11,112 feet. It provides a safer, year-round alternative to the treachero