The brush fire was about 40 acres wide and only 10 percent contained Monday night, according to a spokesperson for the Massachusetts Department of Fire Services.

The closure extends from a three-way stop sign at Blue Hill River Road to the intersection of Unquity and Chickatawbut roads, according to MassDCR. Houghton’s Pond main lot, along with lots B and C, are also closed to ensure the safety of firefighters and first responders.

MILTON – Hillside Street in the Blue Hills Reservation is closed until further notice as fire crews continue to work on extinguishing brush fires that first broke out Monday across 40 acres of the 7,000-acre property managed by the state's Department of Conservation and Recreation.