The closure, which will begin at the start of scheduled service Saturday morning and continue through July 25, means there will be no train service between the Wilshire/Vermont, Wilshire/Normandie and Wilshire/Western stations.
Subway service will remain available between Union Station and the Wilshire/Vermont station via the Metro B (Red) Line. The B and D lines typically share the tracks in that stretch, but the B line turns north at Wilshire/Vermont en route to North Hollywood.
During the D Line closure, shuttle buses will be provided between the Wilshire/Western and Wilshire/Vermont stations, according to Metro.
The temporary closure is due to Metro's preparations to open the first section of the D Line subway extension later this year. That extension will include three new subway stations at Wilshire/La Brea, Wilshire/Fairfax and Wilshire/La Cienega.
During the closure, Metro crews will connect all rail, communication and power systems between the current subway line and the extension. The D Line will eventually extend through Century City, Beverly Hills and end near the VA campus in West Los Angeles.