Crews are set to start work next week on a $5.6 million project to replace twin bridges on Interstate 70 in Wayne County. Walsh Construction Co. will begin shifting traffic in both directions of I-70 at State Road 121 for construction of two new three-span bridges.
The Indiana Department of Transportation says the contractors will use a method called "slide-in bridge construction." The process involves building new bridge decks on temporary supports adjacent to the existing bridges. When complete, crews will demolish the existing bridges and slide the new ones laterally into place.
INDOT says the demolition and slide of each bridge is scheduled for September and October. Traffic will be shifted to one lane in each direction during this process. As crews establish the work zone traffic configuration, there will be overnight lane closures on I-70 between State Road 227 and U.S. 40 between 9:00 p.m. and 6:00 a.m. with one lane remaining open in each direction.
INDOT says using the slide-in bridge construction process will accelerate construction, increase safety, reduce costs of maintaining traffic and minimize the impact on drivers during construction. You can view a timelapse video of the slide-in bridge construction of the Milton-Madison bridge in southern Indiana below.