Lebanon, NH Mechanic/High/Mascoma Street Roundabout Project Update - Week of August 24, 2026

The contractor will continue work on the stone retaining wall and subgrading the roundabout.  Rail Trail access is now open across the Mechanic/High/Mascoma Street intersection with flagger assistance; however, please continue to follow the designated detour due to the ongoing tunnel closure.

The tunnel is anticipated to reopen on Thursday, August 27, 2026, with walkthrough scaffolding in place.  For tunnel closure updates and a detour map, please visit www.LebanonNH.gov/tunnel.

Please expect delays and use caution in the work zone.

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