Arkansas jumped on the Lions early with six runs in the first three innings of play.
Bridges doubled with two out in the bottom of the second inning and scored on a single to left by Cliff Crouse. Scott McConnell, who reached on a walk, later scored on a wild pitch to give the Hogs a 2-0 lead.
Arkansas added to its lead with four runs in the bottom of the third. Nick Pitts reached on a walk to start the inning and moved to second on an infield single by Cody Clark. Clay Goodwin then doubled to right centerfield to drive in Pitts.
Luke Weatherford reached on a bunt single that scored Clark to give the Hogs a 4-0 advantage. Bridges then singled to center to bring in Goodwin and Weatherford to put Arkansas up 6-0.
The Razorbacks added four more runs in the bottom of the fourth inning, with Bridges driving in his third and fourth runs of the day with a single to left centerfield. Scott McConnell doubled to score Bridges in the inning, while Goodwin drove in Ryan Fox with a single to center.
Arkansas continued the onslaught with three more runs in the bottom of the fifth as Andrew Wishy led off the inning with a solo home run to left centerfield. Goodwin drove in Fox for his second RBI of the day, while Weatherford picked up his second RBI with a single to center that plated Goodwin.
The Razorback pitching staff was overpowering as Missouri Southern was held to three hits in the first six innings of play. Senior Charlie Isaacson relieved Richmond to pitch the fourth and fifth innings. Isaacson gave up just one hit in two innings of work.
The Lions ended the shutout bid with a run in the top of the seventh with two outs. Aaron Techlin singled to centerfield and later scored on a double by Darin Nonemaker.
Kyler Pomeroy and Scott Woods worked a perfect eighth and ninth inning to give the Hogs a 13-1 victory.
Arkansas begins the season 1-0, while Missouri Southern drops to 1-4.
The Razorbacks will play Oklahoma City Tuesday at 3 p.m. at Baum Stadium. Radio coverage begins at 2:40 p.m. Oklahoma City enters the game with a 4-0 record.