Heads up commuters and travelers headed to the Head of the Charles Regatta: Traffic and T closures planned

This weekend is the Head of the Charles Regatta, which means crisp fall air, rowers competing in that dirty water and traffic.

Lots of traffic.

Those bold enough to drive into town can hope to find parking at the Birmingham Parkway, which runs next to I-90 and is accessible via Market Street off of Soldiers Field Road and the Route 20 intersection near Community Rowing. That is catch-as-catch-can street parking with a free shuttle service.

You can also try to park at Alewife Station, which has 2,733 parking spots and is only a few Red Line stops away from Harvard Square.

There are also about 500 spots at Harvard Stadium through the Gate 14 entrance.

Memorial Drive from the Cambridge Boat Club to Western Avenue will be closed from 8 a.m. to 7 p.m. on Saturday and Sunday.

The Regatta provides two complimentary shuttle bus services throughout the course with one shuttle running stops at the Singles and Doubles Launch Site, Lars Andersen Bridge from the Boston side, Cambridge Boat Club, and the Finish Area Launch Site and the other running from the parking area on Birmingham Parkway to the Finish Area Launch Site.

This weekend, the Orange Line is having a major makeover.

Buses will replace service between Forest Hills and Ruggles stations as part of the ongoing Winter Resiliency Improvement Program. That means shuttles between Ruggles, Roxbury Crossing, Jackson Square, Stony Brook, Green Street and Forest Hills. Regular service resumes on Monday morning. However, shuttles will run between Oak Grove, Malden Center, Wellington, Assembly and Sullivan Square on Monday through Thursday.