The speed limit over the bridge will be reduced from 60mph to 40mph, and barriers installed on the verges to keep vehicles on the main carriageway as a precautionary measure.
The County Council has continually monitored the condition since it took over responsibility for the bridge from Network Rail in 2012, in the knowledge that it will, eventually, need replacing if it is to remain open to all traffic.
Meanwhile, the County Council continues to keep district and parish councils, Verderers, the Forestry Commission and National Park Authority as well as local businesses and nearby residents informed of plans and timeframes for a permanent repair in the future.
Holmsley Rail Bridge carries the main A35 over the C10 Burley to Sway/Brockenhurst road and is one of a number of redundant railway structures in Hampshire previously owned by British Rail Board (Residuary) Ltd. It was originally opened in 1847, and replaced in 1908. The railway line closed in 1964, and in the 1970s the former route was turned into a road; the C10 Station Road is still in use today.