Union Station’s Madison Street entrance will be closed for repairs and inspections “until further notice,” Metra announced Thursday.

The closure comes days after chunks of concrete fell from the ceiling and struck a commuter on her head, fracturing her skull.

“[The closure] is connected to the inspections that began after [the rocks fell],” said Metra spokesperson Michael Geillis, adding that Amtrak is responsible for the repairs.

Tracks five, seven and nine on the north concourse will remain out of service through Thursday evening, officials said. Customers can use the Adams, Canal or Clinton entrances.

Geillis said Amtrak is responsible for the inspection and repairs.

Amtrak said in a statement the move is "out of an abundance of caution" to "ensure the continued safety of all customers."

"The Madison Street entrance at Chicago Union Station is being temporarily closed so that inspections may continue to verify the integrity of the non-railroad owned structures above the tracks," the statement read. "Amtrak is working as quickly as possible to identify any issues and make repairs so the entrance and all tracks can be reopened. Customers should allow additional time to reach the trains. Customers who normally enter or exit Union Station from Madison Street should use the entrance on Adams Street and should allow additional time to reach the trains."