The Eisenhower Tunnel is a vehicular tunnel located at 39.679�, -105.92� on Interstate 70 approximately 60 miles (100 kilometers) west of Denver, Colorado. The tunnel was built under the Continental Divide, and at 11,158 feet (3,401 m), is the highest vehicular tunnel in the world. It is also the longest tunnel built under the Interstate highway program, and one of the last major pieces of the system to be completed. Its full official name is the Eisenhower-Johnson Memorial Tunnel; the westbound bore is named after the 34th U.S. President Dwight D. Eisenhower (for whom the Interstate system is also named), the eastbound bore after onetime Colorado governor and U.S. Senator Edwin C. Johnson.