Some migrant families who were unable to enter an already overfilled state shelter system will be temporarily housed at the Transportation Building in Boston.

With the state’s Emergency Assistance shelters filled to their 7,500 family capacity, a small number of new arrivals to Massachusetts will be housed at 10 Park Plaza in Boston, home of the headquarter for the state’s transportation agencies including the Massachusetts Bay Transportation Authority, according to officials with the Healey administration.

“In order to ensure that families eligible for Emergency Assistance shelter have a safe and warm place to sleep at night when there is not a shelter unit immediately available, the administration is utilizing space at 10 Park Plaza as a temporary, overnight facility,” Emergency Assistance Director Scott Rice said in a statement.

Families will arrive Monday night, a DOT official told the Herald. They will be housed in a conference room, which was apparently being filled with cots as of Monday morning. A photographer was not allowed entry into the room where the families will stay.

State officials anticipate the area being set aside can shelter about 25 families.

The shelter will only be used by families who have been assessed by state officials and determined to be qualified for emergency assistance.

Healey administration officials, speaking on background, said the Transportation Building will be used for “approximately” two weeks until an additional safety net facility becomes operational.

This story will be updated.

MEALS AND MILES: State employees in the departments housed in the Transportation Building, above left, were the biggest credit card users, spending $2.3 million. Expenses ranged from meals at places like Spinelli’s, center, Amazon and JetBlue flights.