Ōtari-Wilton’s Bush bridge replacement

21 February 2025

Ōtari-Wilton’s Bush is New Zealand’s only botanic garden dedicated to native plants, making it a unique and valuable site. The sanctuary covers 100 hectares of native forest and 5 hectares of plant collections. Originally a dense podocarp broadleaf forest, it holds deep Māori significance, with "Ōtari" meaning 'Place of Snares' due to its use as a hunting ground. Early landowner Job Wilton preserved 7 hectares (17 acres) of the original forest, creating what is now known as Wilton’s Bush.

Frame Group carried out an Asset Condition Assessment of the structures within Wellington’s Western Ward Parks and Reserves, which included bridges, boardwalks, and viewing platforms. Based on our findings, several structures were recommended for replacement to Wellington City Council (WCC). Among these, the timber bridge at Ōtari-Wilton’s Bush was identified as having safety and compliance concerns. This bridge, located between Wilton's Bush Road and the Northern entrance and Picnic Area, was flagged for urgent attention.

Frame Group has successfully completed the detailed design, building consent process, and construction management for the bridge replacement. During the design phase, careful consideration was given to enhancing the existing bridge while preserving its core features and existing concrete foundations. It is exciting to observe, during the final inspection, that cave weta and eels had already begun returning to the area. Additionally, we've stabilised the riverbed and securely reinforced the critical wastewater pipe below.

Constructed by: Edifice Structures