METOLONG DAM PRE-STRESSED RIBBON PEDSTRIAN BRIDGE

We designed the first multi-span pre-stressed concrete ribbon bridge in Africa across the tail waters of the new Metolong Dam in Lesotho. The pre-stressed concrete ribbon walkway forms a catenary spanning 249 m from one abutment, over a pier, to a second abutment, and the central support consists of a 35 m high reinforced concrete pier, seated on top of a sandstone cliff 15 m above the river bed.

Its compressed concrete platform design makes for a rigid, stable ergonomic footbridge for pedestrians and handrails were set at horse height.