Addison Airport Toll Tunnel (AATT)

The Addison Airport Toll Tunnel is an east-west route between the Dallas North Tollway and I-35E under the Addison Airport runway. It is a two-lane tunnel, approximately 1,600 feet in length, with a total roadway length of 3,700 feet. The tunnel opened to traffic in 1999.

Nightly Closures for NTTA Maintenance: Beginning April 16 through late 2023  (8 p.m. to 6 a.m.) 

• The Addison Airport Toll Tunnel (AATT) will be closed to traffic each night. 

Detours: 
• Eastbound detour: Drivers will turn right onto Midway Rd. and then make a left onto Belt Line Rd. They will turn left onto Addison Rd. and make a right to continue eastbound on Keller Springs Rd.
• Westbound detour: Drivers will turn right onto Addison Rd. and continue north to Trinity Mills Rd., where they will turn left. They will turn left onto Midway Rd. and make a right to continue westbound on Keller Springs Rd.