Traffic on Route 28 in Methuen will shift to two temporary bridges over Route 213 Monday as MassHighway continues work on a $10 million bridge replacement project at the site.
The traffic diversion to the temporary bridges will speed up the project. The original completion date of April 2011 has been moved to April 2010.
Demolition of the existing bridge will begin Tuesday night. The temporary bridges will allow for the passage of two lanes of traffic in each direction for the duration of the project.
The four-lane Route 28 (Broadway) bridge over Route 213 will be replaced by a two-span steel superstructure on new concrete abutments. The bridge will include two five-foot sidewalks.
The project was originally designed for phased construction with the use of one temporary bridge. Recent alterations to some nearby electrical transmission lines made additional space available for a second temporary bridge, allowing for a single phase of bridge reconstruction. The one-year time savings comes without any significant additional cost. MassHighway provided the majority of the parts that made up one of the temporary bridges.