Route 3 northbound will close Friday night as construction continues on the Putnam Bridge, which connects Glastonbury and Wethersfield.
Northbound closures will take effect at 8 p.m. July 17 and last through 5 a.m. July 20, according to the Department of Transportation. Drivers will be rerouted onto Route 2 from Interstate 91 northbound to the Charter Oak Bridge.
The northbound side will close again next weekend, from July 24 to July 27, and the southbound lanes will be closed July 31 to Aug. 3.
It's part of a $35 million project to rehabilitate the bridge.