 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. And there will also be some temporary daytime road closures on the Route 12A bridge in Claremont over the Sugar Hill River. That bridge will totally close tomorrow and Thursday. A detour will be in place from 7 a.m. to 7 p.m. If you've got an early morning flight, things are looking pretty good this morning. Logan and Boston, the Portland Jetport and the Manchester-Boston Regional Airport arrivals and departures are all on time.