We have a traffic alert for drivers in Roanoke.

Starting Thursday night, traffic on Elm Avenue will be down to one lane in each direction for bridge work.

This is happening from 8 p.m. until 6 Friday morning.

The work is taking place on the bridge over the Norfolk and Southern railroad tracks.

It's part of the Elm Avenue, Interstate 581 improvement project.

The entire project is expected to be finished by summer 2015.