Gov. Maura Healey and local officials took a victory lap as they marked the official first day of South Coast Rail service in Fall River on Monday.

The MBTA’s South Coast rail begins service Monday, shuttling riders from Boston’s South Station to Taunton, Fall River and New Bedford. Those three communities were the only “major cities” within 50 miles of Boston that were not serviced by the Commuter Rail — until Monday.

The MBTA will soon brings its services to several South Coast communities with its highly anticipated, $1.1 billion expansion. The first South Coast Rail train is set to begin taking passengers Monday morning.