[4] ADOT officials concede the term "tunnel", in this case, is a misnomer, because it is actually a series of 19 side-by-side bridge overpasses.

The terminal was originally planned to be built next to the Central Avenue bridge over Margaret T. Hance Park.

[6] While the bus lanes were built, the City of Phoenix was unable to secure the over $20 million needed in Federal Government funds to complete the project.

[5] In times of heavy traffic or in the event of a fire in the tube, fans can be started up to provide ventilation, in order to prevent the dangerous buildup of carbon monoxide.

[8] The underpass has a large diesel generator approximately 160 feet (50 m) east of the westbound entrance to the tunnel, ensuring that the lighting, video surveillance, and intercoms have continuous power even during an outage.