After the death of Urban Broughton in 1929, Sir Edwin Lutyens was commissioned to design a set of twin memorials consisting of large kiosks and posts or "piers" with stone blocks crowned with laurel wreaths and formalised urns at the Egham end and with lodges and piers at the Windsor end. Lutyens also designed a low wide arch bridge to carry the main road over the Thames to the north, integrating the road layout and bridge design into his plans for the memorials. The southern kiosks were moved to their present location when the M25 motorway was constructed.