Roller Screw Jacks Provide Maintenance - Access for the Tay Road Bridge

In order to continuously maintain a road bridge workmen need access to the complete span of the bridge for inspection and routine maintenance. For work under and on the side of the bridge access needs to be available without the need to erect a special structure for each maintenance operation. One such bridge is the Tay road bridge, which spans the Firth of Tay from Dundee to Newport-on-Tay providing access from the county Angus to Fife. For the Tay road bridge the solution of maintenance access came in the form of two motorised
platforms on the bridge (one each side) that could traverse the bridges span.

Each platform is designed in two sections. The upper section is connected to the bridge and houses the drive mechanism for moving it across the bridge. The lower section is designed to provide access to all areas by being rotated, raised and lowered in relation to the upper section.