Addison Airport Toll Tunnel
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.
| Overview | |
|---|---|
| Other name(s) | AATT |
| Location | Addison, Texas |
| Coordinates | 32.9685°N 96.8360°W |
| Route | Keller Springs Road |
| Crosses | Addison Airport |
| Start | Midway Road |
| End | Addison Road |
| Operation | |
| Work begun | September 1997 |
| Opened | February 18, 1999 |
| Operator | North Texas Tollway Authority |
| Toll | $0.74 by electronic toll collection $1.48 by mail invoice |
| 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 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.
The tunnel proper is 1,600 feet (488 m) long, while the entire roadway is 3,700 feet (1,128 m) long. Tolls are collected at a plaza on the west side of the roadway. As of June 2023, 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.