Tulsa’s $252M ‘Stonehenge’ project begins

The I-44 and U.S. 75 interchange project is set to be the most expensive the Oklahoma DOT has ever undertaken.

Construction Dive

By Julie Strupp Senior Editor

April 10, 2025

Construction began Monday on the I-44 and U.S. 75 interchange in Tulsa, Oklahoma, known to locals as “Tulsa’s Stonehenge” and “Traffic Henge” due to the towering empty bridge piers left standing for years, Oklahoma DOT said in a news release. The state has identified it as one of the most outdated, unsafe and congested areas of Tulsa’s I-44 Corridor.

The $252 million project aims to revamp the interchange and other infrastructure in the area. It combines three phases into one and represents the most expensive contract the Oklahoma DOT has ever undertaken, according to the release. The agency tapped Tulsa-based Manhattan Road & Bridge for construction. 

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