The weekend is upon us, but getting around on the   MBTA might have a few snags and bummers, depending on where you’re headed.

In his 1962 State of the Union Address, President John F. Kennedy said, “The time to repair a roof is when the sun is shining.”

The T seems to be in agreement with the late president.

Buses will replace Red Line service between North Quincy and JFK/UMass on Saturday and Sunday. Construction crews will be out working on the Winter Resiliency Improvement Program, bulking up the train lines after last winter beat them into submission. Fear not commuters of the Commonwealth, normal train service will return Monday morning just in time for work.

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Starting Sunday at 8:45 p.m., crews will be out working on the Orange Line until Tuesday, September 8th.

That means that shuttle service will run both ways from Wellington Station, Malden Center and Oak Grove Station. The Franklin Street entrance at Downtown Crossing will be closed all summer until next year.

The Blue Line will be running without any interruptions.

The Green Line will be the Green Line, meaning any and all service is catch-as-catch-can. Not much new there.