A portion of Indigo Hill Road in Somersworth was closed off to traffic on Wednesday afternoon after a reported water main break. The Public Works Department said that the break was first reported around 2:30 p.m. and the road remained closed until well into the evening. The pavement where the main was damaged caused that section of Indigo Hill Road to fracture.  Somersworth police officers had to block off parts of the road as crews worked to secure the area.