A water main break on Route 40 in Havre de Grace shut down the Thomas Hatem Memorial Bridge to westbound traffic for about 10 hours Friday, the Maryland Transportation Authority said.
The westbound lanes of the bridge were closed about 5:15 a.m. and finally reopened at 3:15 p.m., MDTA said.
"They are trying to get it reopened by rush hour," Tamory Winfield, of the MDTA, said shortly after 1 p.m.
The water main break affected one lane of the four-lane bridge. Crews had to patch the roadway, Winfield said.
Traffic was detoured onto Route 222 in Cecil County and drivers traveling south or west across the Susquehanna River were encouraged to use the I-95 Tydings Bridge or Route 1 across Conowingo Dam.
During the Hatem closure, traffic was heavier than usual on the Tydings Bridge, according to some motorists driving through the area.