From the State Department of Transportation:
A Concrete Tunnel Liner Assessment is planned to begin on Sept. 9 within Heroes Tunnel on Route 15.
Both northbound and southbound Route 15 motorists will be shifted to one barrel while work is performed in the adjacent barrel with a crossover traffic pattern using traffic control personnel, state police, and signing patterns to guide motorists through the work zone.
Work hours will be Sunday through Thursday from 10:00 p.m. to 6:00 a.m., Friday from 10:00 p.m. to 7:00 a.m., and Saturday from 10:00 p.m. to 9:00 a.m. It is anticipated that this work will last up to 15 nights.