A dump truck carrying dirt overturned on the northbound I-795 ramp to Md. 140, closing all lanes in that direction and snarling traffic during Thursday afternoon rush hour.Brian Green, with the Maryland State Police, said they were dispatched at 3:35 p.m. to 602 Westminster Pike for the incident.Drivers are able to take 795 to Md. 30 to bypass the incident, he said. Lanes in the opposite direction are slow moving but open, he added.UPDATE - Baltimore Co. - Overturned dump truck with lost load on the NB I-795 ramp to WB MD 140. Major delays on NB I-795 Use MD 140 to MD 30 to MD 91 to MD 140. #mdtraffic #mdotnews cg&mdash; MD State Highway Adm (@MDSHA) June 21, 2018 Green said the incident only involved the truck. He said he did not know if anyone was injured.Green said he did not know when the road would be open, but expected it to take some time.&#8220;Half the load&#8217;s on the road so it&#8217;s going to be a while for cleanup,&#8221; he said.