A music festival and road construction could slow traffic on Interstate 85 and elsewhere this weekend, transportation officials said.

Over the weekend, part of 10th Street between Piedmont and Monroe streets and part of Charles Allen Drive, will be blocked off for the Music Midtown festival, according to WSB Radio.

Traffic reporters recommend taking MARTA to avoid congestion in the Piedmont Park area. For information on schedules and ticket prices, see www.itsmarta.com.

Other weekend events include the PGA Tour Championship at East Lake Golf Club, the Georgia Tech-North Carolina football game at noon Saturday at Bobby Dodd Stadium and the Georgia State-Jacksonville State football game at 2 p.m. Saturday at the Georgia Dome.

In Athens, the University of Georgia plays North Texas at Sanford Stadium, with kickoff at 12:21 p.m.

Construction crews will place beams on the I-85 and Ga. 400 Interchange project this weekend, according to the Georgia Department of Transportation.

The project will close two lanes on I-85 northbound from Piedmont Road to Ga. 400 from 7 a.m. to 3 p.m. on Saturday and Sunday.

There also will be work associated with the project on Sidney Marcus Boulevard, Cheshire Bridge Road, Lenox Road and Buford Highway.

Construction crews also will be closing single lanes on I-285, I-75 and I-20 to clean drains and sweep shoulders.

Motorists are encouraged to drive cautiously, especially on Saturday, when rain is forecast.

Fall officially begins at 4:44 p.m. Sunday, and Saturday’s last full day of summer is almost guaranteed to be wet.

Channel 2 Action News meteorologist Karen Minton forecasts a 100 percent chance of rain on Saturday, with dry conditions returning on Sunday.

Weekend high temperatures will be in the mid- to upper 70s, with lows in the 60s.

Staff writer Mike Morris contributed to this article.