As part of the Interstate 581 and Elm Avenue interchange project in Roanoke, there are ramp and lane closures scheduled for a paving operation. Today, the northbound off-ramp from I-581 to Elm Avenue will be closed from 10 p.m. in the evening to 6 a.m. tomorrow morning. Tomorrow, there will be a left lane closure on the southbound off-ramp to Elm Avenue from 10 p.m. in the evening to 6 a.m. Friday morning. This work is weather and work schedule permitting. Drivers should expect delays or seek alternate routes. Motorists are encouraged to use caution as they travel through the work zone.