Traffic going into Boston through the William F. McClellan Highway will have to look for detours during Monday night's commute as one side of Route 1A is closed after morning bus crash.

Part of Route 1A South reopened on Tuesday after a bus crash on Monday morning brought down two transformers and three light poles, with two people hurt and hospitalized.

The southbound side of Route 1A in East Boston remains closed on Tuesday morning after a charter bus transporting workers to Logan Airport toppled multiple utility poles on Monday morning.

Traffic is backed up for miles after a crash involving a charter bus closed both sides of Route 1A in East Boston on Monday morning. Video from the scene showed a crashed Academy bus with a shattered windshield stopped on the southbound side of 1A at 175 William F.

Traffic was stopped in both directions on a Boston highway after a bus crashed into a light pole on Monday morning.

Traffic is backed up for miles after a crash involving a charter bus closed Route 1A in East Boston on Monday morning. Video from the scene showed a crashed Academy bus with a shattered windshield stopped on the southbound side of 1A,

A bus crashed into a utility pole on the William F. McClellan Highway in East Boston and brought down two other poles and two transformers, Boston police said. The crash on the McClellan Highway, which is also Route 1A,