BANGOR, Maine — A hole opened up on the State Street bridge in Bangor sometime Wednesday morning and crews will be working into the afternoon repair the damage, according to Bangor Public Works.

The hole is 5 square feet on the surface, but widens below ground. It is 5 feet deep, 15 feet long and 15 feet wide under the road’s surface, according to crew foreman Steve Smith, who was on scene around 10:30 a.m. Wednesday.

Public Works arrived around 8:30 a.m. and blocked off the left lane of the bridge to prevent people from driving into the hole, according to Smith.

Smith said it appears an old water main break undermined that section of the road. The water main has since been shut down, but it caused damage underneath the pavement.

Public Works is filling the hole with flowable fill, which is similar to concrete but it can be more easily dug up during future work. Smith said he expected that the hole would be filled, road patched and left lane open to traffic by 2 p.m.

The bridge and water main will undergo permanent repairs in the spring, Smith said.