PHOTOS: Firefighters were on the scene of a structure fire at the Alvin's Island retail beach store in Destin on Thursday. Firefighters from multiple agencies were on the scene and a ladder truck with firefighters was inspecting the roof of the building. West and eastbound lanes of U.S. Highway 98 shutdown for an extended period of time as they battled the blaze. The store is located across from Sundestin condominiums at 1073 U.S. Highway 98. Alvin's Island owns a handful of stores along U.S. 98. The store that is on fire is store #11. The cause of the fire is unknown. Firefighters were still on scene Friday to put out hot spots.