shannon hamilton was arrested on sunday attempting to build a barricade on a bridge in georgia where his 16-year-old daughter had died .
cecily and her friend taylor swing died just three weeks ago after their vehicle plunged off the bridge and into the river .
hamilton , who had grown fustrated waiting for the local authorites to act , has been charged with interference with government property .
white county commissioners have approved a motion to add guardrails , but there is no exact timetable for when construction will begin .