UPDATED: 7:45 p.m. with name of woman struck.
Leslie Jacobs said the accident happened right in front of her mother's house and said Johnston is her mother's neighbor. Jacobs identified Johnston as the woman struck.
"She was walking across the street from the Farmer's Market, when she was hit head on and went flying up and hit the windshield," said Jacobs.
Scanner report had Johnston suffering a head injury and needing a medical helicopter. The helicopter landed at the Massachusetts State Police headquarters on Route 9. She was taken to best Israel Hospital in Boston.
Framingham Police are investigating.
"It is a very dangerous street especially with all the construction going on and the market on the Green probably diverted the driver's attention," said Jacobs, who lives in Milford.
Framingham Patch will update when we learn more.