Overturned 18-wheeler on Rte 2 EB before Merriam Ave in Fitchburg. Only the breakdown lane gets by. #WorcesterTraffic #BostonTraffic #MATraffic

Overturned 18-wheeler on I-290 EB at Grafton Street in Worcester. Right lane blocked. On-ramp from Grafton St closed. #WorcesterTraffic #BostonTraffic #MATraffic

Crash involving an 18-wheeler on the ramp from I-290 EB to I-495 NB in Marlboro. Ramp closed. Ramp from the Rte 85-connector to I-495 NB also closed. #BostonTraffic #WorcesterTraffic #MATraffic

Crash on I-495 NB before Rte 2 in Littleton. Left lanes blocked. #BostonTraffic #NashobaValleyTraffic #WorcesterTraffic #MATraffic

Ongoing crash investigation on I-84 WB in Sturbridge. Road being detoured onto Rte 20. #WorcesterTraffic #BostonTraffic #MATraffic

Life Flight chopper taking-off from I-495 in Bolton on its way to UMass Memorial Medical Center in Worcester. #BostonTraffic #WorcesterTraffic #MATraffic

Here's the scene of a serious crash this afternoon on I-495 SB after Rte 117 in Bolton. One person was transported to U-Mass Memorial Medical Center in Worcester. #BostonTraffic #WorcesterTraffic #MATraffic

Vehicle on its roof on I-290 WB at Church Street in Northboro. #WorcesterTraffic #MATraffic

Overturned car-carrier on I-290 EB before Rte 146 (Brosnihan Sq) in Worcester. Left lanes blocked. #WorcesterTraffic #MATraffic

Crash on Rte 2 EB at Rts 110 & 111 in Harvard. All lanes blocked. #BostonTraffic #WorcesterTraffic #MATraffic