  We construct time-dependent charged black string solutions in
five-dimensional Einstein-Maxwell theory. In the far region, the spacetime
approaches a five-dimensional Kasner universe with a expanding
three-dimensional space and a shrinking extra dimension. Near the event
horizon, the spacetime is approximately static and has a smooth event horizon.
We also study the motion of test particles around the black string and show the
existence of quasi-circular orbits. Finally, we briefly discuss the stability
of this spacetime.
