Building Richmond bridge , picture from the river bed . A new concrete bridge is being constructed over the Thames at Richmond , near the Old Deer Park , and thousands of tons of concrete is being used in the work , which is one of the largest concrete bridge building undertakings ever attempted in England . the river bed is being excavated by means of coffer dams . Excavating the bed of the Thames in coffer dams for the foundations and piers of the new Richmond Bridge . 9 March 1932