Drivers navigating the busy intersection of Allisonville Road and 146th Street will soon notice a significant traffic shift as construction on the new interchange continues. Scheduled to take place on or after December 19, the shift will reroute eastbound traffic onto the eastbound White River Bridge. Until now, both eastbound and westbound traffic have been using the westbound White River Bridge.

“This traffic switch is an important milestone in the project’s progress,” said Matt Lee, Bridge Program Engineer for the Hamilton County Highway Department. “While this adjustment won’t immediately add lanes, it will give our crews more space to work, bringing us one step closer to completion.”

The project, which aims to transform the intersection into a grade-separated interchange with a roundabout running beneath 146th Street on Allisonville Road, is on track for completion by summer 2025.

A second traffic shift is planned for spring 2025. This change will move traffic onto the bridge over Allisonville Road and provide access to the roundabout below—assuming favorable weather conditions.

“We are at the mercy of Mother Nature,” Lee explained. “Laying asphalt is especially challenging during colder months because it’s temperature-sensitive. Fortunately, the weather has been cooperative the past couple of years, and we’re hopeful this winter will follow suit.”

The project is designed to alleviate congestion and improve safety for drivers in the area, a key priority as the region continues to grow. While some temporary inconveniences are expected during the construction, county officials express optimism about the long-term benefits the upgraded interchange will bring.

Drivers are encouraged to stay alert and adhere to updated traffic patterns as work progresses.