Update, 10:30 a.m. Tuesday: Investigators have determined that the beige Lexus sedan driven by Aimee Corley, 21, of Bluffton, crossed the center line, causing the three-vehicle crash Monday.
Originally, Ross Glazter, 66, of Bluffton, was thought to have crossed the center line as he traveled south in a Nissan SUV.
However, investigators with the Savannah-Chatham Metropolitan Police Department's Major Accident Investigation Team have determined Glazter was actually travelling northbound on the bridge behind a white Kia driven by Faye Wiggs, 62, of Chesapeake, Va.
The Kia was sideswiped by the Lexus driven by Corley. The Lexus then collided with the SUV driven by Glazter.
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Wiggs taken by ambulance to Memorial University Medical Center in Savannah, where she was treated and released.
The investigation is ongoing.
Earlier story: A crash on the Back River Bridge near Savannah Monday morning sent two drivers from Bluffton to the hospital and snarled traffic on both lanes of U.S. 17 near the Georgia-South Carolina state line for hours.
According to Savannah-Chatham Metropolitan Police, a Nissan SUV driven by 66-year-old Ross Glatzer of Bluffton crossed the center line at about 10 a.m. as he was traveling south toward Savannah. His vehicle sideswiped a car driven by a Virginia woman before hitting a Lexus sedan driven by Amiee Corley, 21, of Bluffton.
Both Glatzer and Corley were extricated from the wreckage and flown to Memorial University Medical Center in Savannah, where Glatzer is in serious condition and Corley is receiving treatment for leg injuries, according to a news release. The Virginia woman was treated and released.
At least two other collisions happened soon after when drivers did not stop in time, and several people were treated by Southside EMS, the release said. Police continue to investigate the wrecks.