Sept. 16 (UPI) -- A section of a bridge over Pensacola Bay in Florida broke off Wednesday after Hurricane Sally caused a construction crane to topple onto the span, local emergency officials said.
The Santa Rosa County Emergency Management Agency said officials closed Three Mile Bridge, also known as the Pensacola Bay Bridge.
"DO NOT attempt to cross this bridge," the agency tweeted. "Seek an alternate route."
"They're working it right now, the emergency ops folks, are working to get a tug out there right now to get it to stop," he said.
The loose barge forced officials to close the Garcon Point Bridge in Santa Rosa County, the county's emergency management agency said.
In Escambia County, where Pensacola city is located, emergency crews conducted 377 water rescue operations by 2:30 p.m., its emergency management agency said in a release, with its Twitter account stating more rescues were performed throughout the day.
A curfew was imposed for the county, including Pensacola city, from 7 p.m. to 6 a.m. Thursday.
Some 200 National Guardsmen were to arrive on Thursday and the emergency management agency said its request to the U.S. Coast Guard for boat teams to be sent from Mobile, Ala., was approved.
Santa Rosa County also issued a 9 p.m. to 6 a.m. curfew after responders made at least 51 rescues and took nearly 500 emergency calls by Wednesday night, the county said in a statement.
Hurricane Sally arrived in the U.S. Gulf Coast early Wednesday, bringing heavy rains, powerful winds and floodwaters to a wide swath of the coastline between Alabama and the Florida Panhandle.
Sally made landfall as a Category 2 storm but was downgraded to a weak tropical storm as it moved over land, the National Hurricane Center said.
Hundreds of thousands lost electricity across the region as the hurricane-force conditions arrived before dawn. The NHC warned of "catastrophic" and life-threatening flooding along the entire forecast zone.
More than 270,000 homes and businesses in Alabama and 240,000 in Florida have lost electricity, according to PowerOutage.us.
Gulf Power reported that 96% of its customers in Baldwin County, Ala., and more than half in neighboring Mobile County lost power.
Video footage from non-profit rescue group Cajun Navy showed overturned boats and debris littering roads in Orange Beach, Ala., and downed trees, floods and damage were reported across coastal Alabama and Florida.
In Orange Beach, Ala., at least one person was killed by the storm, Mayor Tony Kennon confirmed to AL.com, but released no further details about the fatality.
The mayor commented that he was unsure if the deceased was a resident or just visiting the area when Sally hit.
In Baldwin County, the emergency management agency announced a curfew had been imposed from 7 p.m. until 6 a.m. Thursday.
"Roads MUST be clear for rescue crews and power co. Crews to do their job," it said via Twitter. "DO NOT leave your place of shelter. DO NOT try to return to the area tonight. Do your part, stay off the roads."
The NHC cautioned that some areas could see as many as 35 inches of rain.
One area of Pensacola received 30 inches of rain and Naval Air Station Pensacola nearly 25 inches, plus 90-mph wind gusts, the National Weather Service said. The NWS observed 5 feet of storm surge in Pensacola Bay and expected 2 hours of high tide.
Officials said crews performed water rescues and life-saving measures in the area.
"Flooded roadways and intersections, along with hazardous debris in roadways have become too numerous to list," the Pensacola Police Department tweeted. "Please stay off the roadways now."