A truck rollover on the Massachusetts Turnpike (I-90) westbound at mile marker 106 in Hopkinton has led to the complete closure of the highway, with the lane expected to remain closed through the evening commute. First responders reported injuries and a hazardous materials spill from the truck, prompting detours at Route 9 and significant traffic delays extending back to exit 117. The Westborough Fire Department confirmed the situation and noted that a fuel leak was contained around 3:20 p.m. as crews worked to clear the scene. The rollover occurred in an area under construction, complicating recovery efforts. Authorities have not yet provided a timeline for reopening the highway, and motorists are advised to seek alternative routes. This is a developing story, and further updates are anticipated as information becomes available.