The Silver Spring Transit Center will quietly open Sept. 20, 2015. (Sarah L. Voisin/The Washington Post)

There will be no speeches or ribbon-cutting, no celebratory guided tours offered by Metro or Montgomery County officials.

In the wee hours of Sunday morning, the Silver Spring Transit Center will quietly begin operating as part of Metro’s regional bus and train system.

Beginning at 4 a.m. Sunday, buses that had been stopping near the center on Wayne Avenue, Colesville Road, East-West Highway and Dixon Avenue will use the new hub.

The facility’s three levels will link Metrobus, Montgomery RideOn, taxis and biking commuters to the adjacent Metrorail station at Georgia Avenue and Colesville Road.

After five years of delay and about $50 million in cost overruns — caused by what Montgomery County and Metro allege in a lawsuit to be serious design and construction flaws — there is little interest in the kind of public celebration that usually accompanies signature public works projects, like the opening in June of the Silver Spring Library.

“No pomp and circumstance. It will just open,” said Metro spokeswoman Sherri Ly.

The unsightly perimeter of chain link fence that has surrounded the facility during the years of construction and repair will come down early Saturday morning, county officials said.

Details of how bus service will change are here.