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MIAMI (CBSMiami) — With the Ultra Music Festival in full swing this weekend, it is important for those of us who live and work in downtown Miami to be aware of the road closures and detours.

The three day festival in Bayfront Park is set to kick off on Friday. Traffic closures and detours will start that same morning.

At 9 a.m., most of Biscayne Bay Boulevard will be blocked and traffic will be rerouted West at northeast 4th street to northeast 2nd Avenue.

All northbound traffic along Biscayne Blvd. will be reduced to two lanes and shifted to southbound lanes at southeast 1st street.

The closures and detours will last until Monday at 6 a.m.

Meantime, the Florida Department Of Transportation is warning drivers that they should expect additional traffic in and around Bayfront Park with as many as 300,000 people expected to attend the event.

The department said drivers should be prepared for increased congestion on parts of I-95, US 1, and the Dolphin Expressway leading up to the event. Parts of Florida’s Turnpike, Palmetto Expressway and Don Shula Expressway also may have increased traffic.

For those who decide to take to public transportation, the Metrorail and Metromover will be running until 1 a.m.

Transit employees will be available at the Government Center Metrorail station to provide help.

Metrorail and most Metrobus routes (except for express routes and circulators) charge $2.25 per trip. The Metromover is free.