ENGINEER, 1859 in large metal letters on either end of the bridge. In 1921, new access platforms were added that obscured the lettering but in 2006 Network Rail relocated the platforms, allowing the name to be clearly seen again. The walkways had previously been temporarily removed in 1959 and the bridge floodlit during its centenary year. Over the weekend of 21–22 May 1892 the track gauge on the bridge was converted from to during the final conversion of the whole Great Western Railway. 401 new cross-girders were fitted in 1905 to allow heavier locomotives to pass over. In 1908 the two spans nearest Saltash station were replaced with wider ones to accommodate a new track layout. The remaining approach spans were replaced on both sides of the river during 1928 and 1929. During the 1930s new cross-bracing and diagonal sway-bracing were added between the vertical standards to further strengthen the bridge and keep the suspension chains hanging in the correct shape. The bridge was Grade 1 listed in 1952. Additional links between the suspensions chains and the decking were added in 1969 to further strengthen the bridge. In 2011 Network Rail began a three-year £10 million refurbishment involving replacing 50,000 bolts and installation of 100 tonnes of new steelwork. The bridge has also been stripped back to the bare metal and repainted in the Goose Grey colour originally applied in 1952. Viewing the bridge The bridge can be crossed using a train on the Cornish Main Line which affords far-reaching views of the Tamar. Cruise boats operate between Phoenix Wharf, Plymouth, from Saltash, and Calstock. Main view points are: Saltash railway station () The Cornish approach spans start right at the platform end. These were replaced in 1908 so that the single line on the bridge could split into two lines before reaching the station. Saltash Quay () The foreshore at Saltash runs right up to the pier that supports the Cornish end of the main span. An inscribed stone commemorating the bridge can be found beneath the bridge on the hillside alongside Fore Street. Tamar Bridge () The road bridge runs parallel to and slightly higher, on the north side. A toll-free foot and cycle path is on the south side of the road bridge from which it is possible to examine the bridge in detail. An area of grass beside the motor vehicle toll booths affords a view