Dulles Walkback Tunnel complete!

The d2 “Dulles Development” began in 2000 and passengers have benefited from some of the many planned improvements.  One such improvement will open to the public next month:

An underground pedestrian tunnel connecting the Main Terminal to the Concourse B opened on November 22, 2004.  The 40-foot-wide tunnel under the taxilanes, equipped with moving walkways provides passengers with an alternative to traveling in the behemoth mobile lounges.

The Dr. G. Sauer Corporation, a subconsultant for EarthTech (formerly known as Kaiser Engineers) was responsible for the NATM tunnel design and the waterproofing and monitoring of a cut-and-cover structures at both ends of the tunnel.

Due to funding challenges, the design and construction were broken into three packages; the shell package which consisted a cut-and-cover structure and a mined tunnel, the early finish package which consisted of partial MEP of the cut-and-cover structure and the finish package which consisted of the second cut-and-cover structure and connection to the mined tunnel as well as the MEP and architectural finishes for the remainder of the project.