Stakeholders' requirements 1. A simple truss footbridge has been knocked off its abutments by a vehicle passing below, damaging it beyond repair. A replacement bridge is required: see Figure D-Q1. 2. The footbridge crosses a main road which forms the primary route into a coastal city. The bridge must be aesthetically pleasing. It is hoped that the bridge will gain iconic status because of its high quality of design and construction. 3. The existing abutments are undamaged. They are C-shaped in plan and are formed of 250mm thick brickwork. They are seated on a mass concrete strip footings which are 0.75m wide: see Figure D-Q1. Each abutment can carry a maximum unfactored vertical load of 450kN. The existing approach ramps are 3.0m wide and slope at 1 in 12. The minimum gap between the ramp and the adjacent railway is 5.0m