Route 495 was a major trouble spot this morning. Shortly after 6:15 AM, a person believed to be hitchhiking in the northbound lanes at Route 133 was struck by several cars and fatally injured. State Police closed the left and center lanes for around three hours while photo and reconstruction teams investigated the crash. Only the right lane was open for travel, and northbound delays stretched back six miles to Route 110 in Chelmsford.

Southbound travelers dealt with a seven mile curiosity delay that began around Mass. Avenue in Lawrence. Also, many of the onramps leading to Route 495 North and South were congested, and we had a few secondary crashes in the backups.

All lanes were open shortly after 9 AM and residual delays quickly cleared out.

The cause of this accident is under investigation.