A 16-inch water main break near the front truck entrance to the Dundalk Marine Terminal closed some lanes of Broening Highway Thursday.
The northbound lanes in 2700 block of Broening Highway were closed and both directions of traffic were shifted to the southbound lanes, said Kurt Kocher, a city Public Works spokesman.
Crews will likely work until after midnight to repair the break, which occurred late Thursday morning, he said.
Portions of the Marine Terminal will not have water service while repairs are made, Kocher said.