Mill Creek Expressway Phase 5A (HAM-75-3.84) Design-Build

The project also included the rehabilitation and replacement of several structures. The eastbound I-74 structures over South Beekman Street, North Beekman Street and Elmore Street will have their existing decks removed and replaced. The structure over Spring Grove, Mill Creek, and the CSX/NS railroad tracks will be rehabilitated, including a new deck. The existing structure on the I-74 EB to I-75 NB ramp over I-75 mainline is to be removed and replaced with a new multi-span, curved steel girder structure. Both the I-75 mainline three-span structures over the ramp from Hopple Street to WB I-74 are to be replaced with a new single-span concrete beam structure.
 
Due to the widening of I-75, it was necessary to construct five new retaining walls along the corridor. The three southbound walls are to eliminate any impacts to the adjacent CSX/NS tracks. The two northbound walls will eliminate impacts on the adjacent local road (Streng Street) and minimize impacts to Mount Storm Park. New highway lighting, ITS, and traffic control was also included within the project corridor. Maintenance of traffic was critical in the design and construction of this project. Traffic was maintained at all times during construction in this heavily traveled corridor.