Construction on I-35 in TxDot Waco District reaches halfway point Project still progressing on scheduled, slated to be completed in 2023 and last updated 2021-04-16 10:30:16-04 WACO, TX â According to the Texas Department of Transportation Waco District, construction on I-35 in the area is halfway complete. "We are at the halfway point," Jake Smith of Texas Department of Transportation Waco District said. "We just conducted a traffic shift to move traffic over to the Southbound side of the project to the West side of the project. So traffic is on new pavement now." Smith said the project is still progressing on schedule and is slated for completion in 2023.