Metro closures during MLK Jr. holiday weekend could affect commutes

• Free shuttle bus service will be provided between Foggy Bottom to the Arlington Cemetery and Clarendon stations across the river.

What they're saying: The closure "will allow Metro to address critical repairs, infrastructure improvements, and other maintenance at one time," the transit agency announced.

• Crews will replace concrete parts that support the rails, and install new rails, platform edge lighting, and fiber-optic cables, among other upgrades.

The Red Line on Saturday and Sunday will be closed between Takoma and Forest Glen due to the construction of Maryland's Purple Line. Free shuttle bus service will replace trains.

• Yellow and Green lines service is unaffected.