Congratulations to Missman, who has earned the largest construction, engineering and inspection (CEI) contract with the Iowa Department of Transportation for the new I-74 bridge in conjunction with HNTB Corporation and Quigg Engineering, Inc. The project will consist of the I-74 approach spans over the river on both sides of the main arch span bridge; the main arch span bridge; westbound Iowa viaduct; and the westbound exit ramp to US 67.
Construction on the new $1.4 billion bridge will begin in the water in summer 2017. Work in the river will continue throughout the project. The approaches will be constructed in 2019 and 2020 with the old bridge set for demolition in 2020.