The westbound lanes of Columbia Pike are closed near Penrose Square due to a gas leak.
It appears that a construction crew working in the roadway struck a gas line. Police, firefighters and Washington Gas crews have responded to the scene.
As a result, westbound traffic is being diverted onto S. Barton Street, according to scanner traffic. One lane of eastbound traffic remains open.
It is not immediately clear how long the closure will last.
Arlington has seen a spate of gas line ruptures recently, mostly due to construction activity. S. Walter Reed Drive was completely blocked for a period of time on May 19 and two separate road closures for gas leaks, in Westover and Halls Hill, were reported on May 30.