Hungerford railway bridge was designed by Sir John Hawkshaw in 1859 using iron lattice girders. An old pedestrian walk on the downstream side of the bridge was replaced with two new pedestrian bridges in 2002, designed by architects Lifschutz Davidson and engineers WSP Group. They are elegant but it is regrettable that no provision was made for sitting or planting. Bridge designers should always remember Khaju Bridge in Isfahan - and plan for multi-use. As shown on the photo-montage, right, the concrete piers could become planting areas.