Dozens of people will remain without power Friday night into Saturday after three utility poles crashed down onto Washington Street, the Patriot Ledger reported.For about an hour Friday afternoon, hundreds of nearby properties, including the businesses in South Braintree Square, were without power on the busiest shopping day of the year.See video from the sceneAs a result of the downed poles, a portion of Washington Street, which is also Route 37, was closed to traffic on a day when many local residents were out shopping for Black Friday deals.Braintree Mayor Joseph Sullivan said the poles fell onto Washington Street between Dunkin’ Donuts and Tiki Palace about 12:30 p.m. Friday. A fourth pole snapped behind the Tiki Palace, police said.No injuries were reported.“The bottom line is that we have a challenging situation, and we’re fortunate no one was hurt because it’s a heavily traveled road,” Sullivan said Friday afternoon.Braintree police released a statement Friday afternoon saying that the exact cause of the downed poles was still under investigation, but it could have been the combination of a transformer exploding and high winds.Police said that no vehicle crashes were reported, but there was at least one unconfirmed report that utility wires fell onto a passing car and caused some damage to the vehicle.Initially, Sullivan said the fallen poles caused hundreds of nearby residences, businesses and even Braintree Town Hall to lose electricity. However, he said all but 50 Braintree Electric Light Department customers were back online as of 1:45 p.m. Town hall was one of the properties restored quickly.Later in the afternoon, power had been restored to all but a few customers. Sullivan said the Dunkin’ Donuts at 1172 Washington St. and the Tiki Palace restaurant across the street were still without power Friday afternoon and wouldn’t regain electricity until the cleanup was finished.The poles that fell on Washington Street are owned by the BELD, which provides Braintree’s electricity. Sullivan said police, firefighters and utility workers would remain on the scene at Washington Street throughout the cleanup process. Sullivan surveyed the scene multiple times Friday afternoon.The portion of Washington Street closed to traffic was from the intersection of Hancock Street and Plain Street to the intersection of Jefferson Street.Sullivan said the South Shore Plaza didn’t lose power when the poles went down.