The Metropolitan Transportation Authority (MTA) today announced weekend overnight service changes beginning this Friday at 11:45 p.m. on the  line between Atlantic Av-Barclays Ctr and Prospect Park, as crews perform track and signal upgrades to improve service reliability and track resiliency.

For 5 consecutive weekends, beginning Friday, July 15 to Monday, August 15, weekend work will take place from 11:45 p.m. to 5 a.m. Service changes are as follows:

• Coney Island-bound  trains operate via the  line between Atlantic Av-Barclays Ctr and Stillwell Av, non-stop between 59 St and Stillwell Av

• Manhattan-bound  trains will operate via the  line from Stillwell Av to Atlantic Av-Barclays Ctr, making stops at Bay Pkwy, 62 St-New Utrecht Av, 9 Av and 36 St

•  shuttle trains will operate between Prospect Park and Stillwell Av

• Buses will operate between Atlantic Av and Prospect Park

Free shuttle buses will continue to replace  trains between Atlantic Av-Barclays Ctr and Prospect Park every weeknight (Monday through Friday), through August 26 from 11:45 p.m. to 5 a.m.

The section of tunnel where the work is taking place is under Prospect Park and the Brooklyn Botanical Garden. Along with signal and track-related improvements such as track replacement, LED light installation, and third rail protection board replacement, further grouting efforts will reinforce resiliency to water infiltration.

Service information is available on the MTA website and on the MYmta app. Customers can also sign up for text and email alerts at www.myMTAalerts.com.