The B818 was closed in March to all except emergency vehicles as an essential public safety measure due to a partial parapet collapse of Branshogle Bridge.
Following a more recent assessment the Council was advised that a further collapse is likely, so a full closure was implemented.
An ecological survey, to determine what wildlife or plant life is present near the bridge, has now been completed. Topographical survey work, to measure ground levels, will start next week to allow completion of detailed assessment of the damage to the bridge and onward design for repair.
Convenor of the Environment and Housing Committee, Councillor Jim Thomson, said: “We are aware of the impact the closure of this vital route is causing to the local community and we are doing all that we can to progress a solution as quickly as possible.”
Vice Convenor, Councillor Danny Gibson, said: “These are essential safety repairs that need to be undertaken to make the bridge safe for everyone and we have committed to engaging with the local community and providing regular updates on progress.”