The design and construction of a new offline viaduct running parallel to Loch Lomond shoreline, followed by a section of online widening which incorporates a cutting into the existing rock headland. The improvement will provide two way traffic flow and remove the traffic signal controls on the A82 Trunk Road at Pulpit Rock. Associated works to include the following, but not limited to: design, earthworks, drainage, road markings, service diversions, accommodation works and incorporating a 5 year defects correction period.