LEBANON — Starting Sunday, nighttime ramp closures are scheduled for exits 16, 17, 19 and 20 on I-89 in Enfield and Lebanon from 7 p.m. to 7 a.m., weather permitting.
The closures are to allow for paving operations, the New Hampshire Department of Transportation said in a news release.
First, the Exit 16 north and southbound on and off ramps in Enfield will be closed Sunday and Monday nights, as well as the nights of Sunday, Aug. 10 and Monday, Aug. 11.
Only one ramp will be closed at a time to minimize disruptions.
Detours will take northbound traffic to Exit 17 and southbound traffic to Exit 15.
Then, in Lebanon, the Exit 17 southbound off ramp will be closed on Monday and Tuesday nights, as well as Thursday, Aug. 7.
Detours will take southbound drivers to Exit 16 to reverse direction, from which they can access Route 4 by the Exit 17 northbound off ramp.
Additionally, the Exit 19 southbound on ramp is scheduled to be closed on the nights of Tuesday, July 29, and Thursday, Aug. 7.
The detour will direct southbound traffic to Exit 19 northbound, from which drivers can reverse direction at Exit 20 for I-89 southbound access.
Finally, the Exit 20 northbound and southbound, on and off ramps will be closed on the nights of Wednesday, July 30, Thursday, July 31, as well as Tuesday, Aug. 5 and Wednesday, Aug. 6.
To minimize disruptions, one ramp will be closed at a time.
Signs will be in place to detour traffic to Exit 19, Route 4 and Route 12A to access open ramps.
Drivers should expect delays during ramp closures.
Additional construction notices are available through newengland511.org.