Demolition of the existing structure and replacing it with a partially precast, partially cast in-situ concrete  culvert. The structure is to have waterproofing applied and rock armour installed. An existing waste water drain is to be lowered over 30m between manholes. Excavation to expose a gas main and allow GNI to divert it.  
An existing watermains is to be diverted over the newly installed culvert.  The carriageway is to be resurfaced and new parapets, rubbing strip and footway are to be installed.