$0.74 by electronic toll collection $1.48 by mail invoice[3]
Technical
Length
1,600 feet (490 m)
No. of lanes
2
Operating speed
40 miles per hour (64 km/h)
Tunnel clearance
16 feet 6 inches (5.03 m)
Route map
The Addison Airport Toll Tunnel (abbreviated AATT) is a road tunnel in Addison, Texas that carries Keller Springs Road underneath Addison Airport. The tunnel is operated by the North Texas Tollway Authority (NTTA) and uses open road tolling through NTTA's TollTag system.
Toll plaza in 2008
The tunnel connects the western and eastern barrier roads of Addison Airport (Midway Road and Addison Road, respectively). This provides a through passage between Dallas North Tollway and Interstate 35E, reducing traffic on Belt Line Road and Trinity Mills Road.[2]
The tunnel proper is 1,600 feet (488 m) long, while the entire roadway is 3,700 feet (1,128 m) long.[4] Tolls are collected at a plaza on the west side of the roadway. As of June 2023[update], two-axle vehicles are charged $0.74 if paying via electronic toll collection or $1.48 if paying by mail invoice; this price increases for each additional axle.[3]
^Bensman, Todd (November 24, 1997). "Down under: Digger burrows toll path under Addison Airport". The Dallas Morning News. A. H. Belo Corporation. pp. 21A.
^ abHartzel, Tony (February 15, 1999). "Toll tunnel to ease traffic strain - Road beneath Addison Airport opens to commuters Thursday". The Dallas Morning News. A. H. Belo Corporation. pp. 23A.
^ ab"Toll Rates Effective July 1, 2023 through June 30, 2025" (PDF). North Texas Tollway Authority. July 1, 2023. Retrieved December 17, 2021.
^"Addison Airport Toll Tunnel (AATT)". North Texas Tollway Authority. Retrieved January 1, 2024.
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