The multiyear I-40/I-240 Interchange Improvement Project has resolved a transportation chokepoint that plagued Memphis, Tenn., for decades. In addition to easing growth-induced gridlock, the project enabled I-40 traffic to increase 18%. Daily traffic was recently tallied at 212,215 on I-40 and 266,095 on I-240. By 2035, the interchange is projected to meet its capacity goal of 350,000 vehicles per day.

Phase II was completed in December of 2016 – seven months ahead of schedule – at a cost of approximately $109 million. It was, at the time, the largest-bid project in TDOT’s history.

Although the interchange on the city's east side is one of the state's busiest, I-40 narrowed at one point to one lane in each direction. Phase II consisted of two-lane flyovers for I-40 in both directions. At 95 feet above ground, the I-40 eastbound flyover is the highest in Tennessee. Phase II also included the replacement of the Wolfe River Bridge with a new bridge carrying six lanes of traffic west and seven lanes east. Previously, it had 11 total lanes. The project also widened I-240 in both directions from the interchange.

Working with TDOT, Buchart Horn served as roadway design engineer for Phases I and II. Other project participants included Dement Construction Co. of Jackson, Tenn., which was awarded the bid; and Smith Seckman Reid Inc. of Nashville, which provided construction engineering and inspection (CEI) services. Buchart Horn served as a subconsultant to Smith Seckman Reid on the CEI portion.

Buchart Horn

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