The National Park Service has announced an upcoming change in the traffic pattern for the Rock Creek Parkway reconstruction affecting drivers at Cathedral Avenue NW.

Starting next Monday, Cathedral Avenue will open to southbound traffic during weekday morning rush hours (7 to 9:15 a.m.). This will be of use to commuters coming down Connecticut Avenue and Woodley Road who want to use the parkway, but it will be limited to the morning rush only.

At 9:30 a.m., the traffic direction will be reversed. Drivers will be able to go northbound only on Cathedral Avenue, and this will apply at all times of day except the morning rush on weekdays.

The park service and the Federal Highway Administration are rebuilding a 1.2 mile portion of the parkway between Beach Drive and P Street in a project that began last fall. It’s scheduled to be done this winter.

Elsewhere in this area along the parkway, the closure in the parkway’s southbound right lane approaching Waterside Drive continues. The park service says this will remain in effect through November. Daily lane closures will continue along the northbound and southbound median lanes.

Between 7 and 9:15 a.m. weekdays, traffic can enter the Shoreham Drive/Calvert Street ramp (adjacent to the Shoreham Hotel) from southbound Connecticut Avenue at Calvert Street, and go south on the parkway. The Shoreham Drive/Calvert Street ramp is closed to southbound traffic at all other times.

Beginning at 9:30 a.m., the traffic direction is reversed, so drivers can go north only on Shoreham Drive/Calvert Street ramp.