Lebanon, NH Mechanic/High/Mascoma Street Roundabout Project Update - Week of August 17, 2026

The contractor and utility crews will continue installing drainage structures, transferring utility cables, working on the precast concrete wall, advancing work on the stone retaining wall, and starting subgrading of the roundabout.  Rail Trail access is now open across the Mechanic/High/Mascoma Street intersection, with flagger’s assistance, but please follow the detour in place due to the tunnel closure.  For tunnel closure updates and a detour map, please visit LebanonNH.gov/tunnel.

Please expect delays and use caution in the work zone.

For more information about the project, please visit LebanonNH.gov/Roundabout.