SMEC undertook the design and implementation of the Mt Edgecombe Interchange as a stand-alone phase as part of an appointment comprising the upgrading of a 21 km section of National Route 2, just north of Durban.
The design solution comprises a four level, free flow interchange, and will meet the Client’s objective to adequately cater for the current and future traffic demand, whilst providing a facility catering for all road users within a confined site boundary.
SMEC solved complex road geometry, maintained high aesthetic standards throughout and overcome structural and geotechnical challenges.
The Mt Edgecombe Interchange Upgrade project comprises the improvement of an existing diamond interchange layout to a free flow, four level interchange configuration.
The upgrade includes 9 new bridge structures, of which the main feature is two free flow ramp viaducts 443 m and 947 m long and 18m and 26m high, respectively. The viaduct span lengths vary with the longest spanning up to 65m.
The viaducts are constructed using the Incremental Launch Method to accommodate traffic and elevation constraints.
- South Africa
- Technical Area:
- South African National Roads Agency SOC Ltd.