 Also, they are starting to do some nighttime culvert work on Route 25 in Merritt. That work will require closing a section of Route 25 each night for one week from 7 p.m. to about 5 o'clock in the morning. Also in Brentwood on Route 125, the Department of Transportation continuing to do some daytime paving work on a section of Route 125 at the intersection of South Road. In Merrimack, nighttime lane closures are in effect on the Everett Turnpike between exits 12 and 13, and traffic will be impacted for most of the summer months tonight.