HUNTSVILLE — Motorists in Limestone County this weekend should expect a single-lane closure on Interstate 65 northbound at the Norfolk Southern railroad overpass north of Exit 340 (Interstate 565).

The Alabama Department of Transportation made the announcement Thursday.

Contractor Wiregrass Construction will close the northbound inside lane at 8 p.m. Friday to remove and replace a concrete end slab on the bridge. The closure will continue overnight, round-the-clock Saturday, and possibly Sunday.

All lanes are expected to be open prior to morning rush on Monday, Aug. 27.

The work is part of a $15.4 million project to resurface 12.4 miles of I-65 between milepost 339 (north of the Tennessee River Bridge) and Exit 351 (U.S. 72).