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Q&AZ: What happened with the empty space in the middle of Interstate 10's Deck Park Tunnel?

gates cover the entrance to the center of interstate 10 tunnel
Sky Schaudt/KJZZ
The empty space in the center of Interstate 10's Deck Park Tunnel was originally intended to be a bus express lane and station.

Through KJZZ's Q&AZ reporting project, a listener asked: Whatever happened with the empty space in the middle of Interstate 10's Deck Park Tunnel?

When the Deck Park Tunnel under the I-10 opened in 1990, it was the last piece to connect the interstate from coast to coast.

The tunnel — which isn’t actually a tunnel but rather 19 bridges side by side — sits underneath Margaret T. Hance Park in Phoenix. If you're driving on the I-10, you can see a single empty lane in between the east and westbound lanes that is closed off by a fence. That area was originally intended to be an express bus lane and bus station, but now it’s not used and is closed to the public. The Arizona Department of Transportation uses the mostly untouched space for storage.

According to  Phoenix New Times reporting in 2011, despite spending over $9 million to begin construction, “the city was never able to secure the $20 million-plus in federal funds it would have taken to complete the project”," which was called the Papago Intermodal Transfer Station.

ADOT also has control rooms on the north and south sides of the freeway where they run lights and four huge ventilation fans in the tunnel. The tunnel was also the original location of the department’s Traffic Operations Center, now located near Buckeye Road and Interstate 17.

The city of Phoenix told KJZZ News in 2022 that it has no new plans for the space.

Rush hour traffic heads into the westbound tube of the Deck Park Tunnel, July 2020.
Scott Bourque/KJZZ
Rush-hour traffic heads into the westbound tube of the Deck Park Tunnel during July 2020.
We think great stories start with curious questions, and KJZZ wants to investigate your questions — big or small — from the Valley or across the state.

Athena Ankrah is an assistant producer for KJZZ's The Show. Their award-winning work centers underserved voices in Phoenix.
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