LEBANON — A state Department of Transportation project to replace the bridge that carries U.S. Route 4 over Mascoma River will go out to bid this April.
The final design plans for the project were presented to Lebanon City Council members last week.
The project is to begin 850 feet north of the U.S. Route 4/Eastman Hill Road intersection and proceed north or eastbound to a point approximately 1,200 feet west of the U.S. Route 4/Payne Road intersection.
The project has been in the works for the past 10 years and is No. 4 on DOT’s “red list” of bridges, which is a ranking of the state’s bridge project priorities, said project engineer Victoria Chase.
“I would expect there would be preliminary work started on the project this year,” Chase said Monday.
The Route 4 Bridge would remain open to traffic while the replacement bridge is constructed, which could take several years, Chase said.
The bridge also includes a rail trail over the Mascoma River.
Along with the bridge replacement, the project includes improvements to the intersection of the U.S. Route 4/N.H. Route 4A/Mill Road intersection as well as pavement rehabilitation and updates to existing drainage structures.
Both U.S. Route 4 and N.H. Route 4A are important connections for community services such as school buses and emergency response vehicles, but NH DOT anticipates that through traffic will be maintained throughout construction.
NH DOT anticipates that upon completion, traffic patterns will be similar to those that exist today.