ROCKVILLE, Md. (WUSA9) -- A Maryland State Trooper collided with a tractor trailer on northbound I-270 while responding to a call, police say.
The collision took place on Wednesday at about 5:20 p.m. Only one northbound lane is open at the scene of the accident near exit 118, Montgomery County Police said.
Officials believe the officer suffered non-life threatening injures, police said.
Expect delays in that area.