The company that designed a Miami pedestrian bridge that killed at least six when it collapsed Thursday was involved in the construction of at least four bridges in Maine. FIGG Bridge Engineers, an internationally known firm based in Tallahassee, Florida, helped design the new Sarah Mildred Long Bridge between Kittery and Portsmouth, New Hampshire; the Penobscot Narrows Bridge near Bucksport; the Sagadahoc Bridge in Bath; and the Wiscasset Bridge. Maine bridges are safe and evaluated based on the latest national standards, Maine Department of Transportation spokesman Ted Talbot said in a statement Friday. “These bridges were designed in accordance with the latest national design standards and are all in very good condition,” Talbot said.