The Interstate 10 bridge crossing the San Jacinto River is closed in both directions.
The TxDOT DriveTexas website is currently showing an estimated re-opening on Monday, but the bridge cannot be inspected until floodwaters recede.
For a real-time confirmation of the status, go to the TranStar traffic map.
Alternate routes are Highway 146 over the Fred Hartman Bridge or Highway 90 at Crosby.
According to the U.S. Coast Guard, at least two bridges struck the bridge.
The Coast Guard said that shortly after midnight watchstanders received a report that nine barges had broken away from their moorings at the San Jacinto River Fleet.
Vessel movement under the bridge had already been suspended due to strong currents. That suspension remains in effect.
This is the second time in 2019 that the critical connection has been closed by a barge accident. The first such incident was in February, which resulted in westbound lanes being closed for three months.
This article was corrected to reflect the origin of the breakaway barges, which was incorrectly identified by the Coast Guard earlier.