# NZ$6m grant backs full replacement of Monowai suspension bridge

> Southland District Council will deliver a new crossing designed for vehicles up to 50 tonnes, improving access for forestry, farming and maintenance at the Monowai hydro station.

- Topic: Financing
- Subjects: Transport, Roads, Construction, Electricity
- Event date: 2026-10-23
- First published on EPC Feed: 2026-10-25T20:55:46.165Z
- Updated: 2026-10-25T20:55:46.165Z
- Countries: New Zealand
- Page: https://epcfeed.com/news/nz-monowai-suspension-bridge-replacement-secures-rif-funding


## Key facts

- Regional Infrastructure Fund grant: NZ$6 million
- Current bridge weight limit: 28.5 tonnes gross
- Target replacement capacity: Up to 50-tonne Class 1 heavy vehicles
- Planned completion: December 2027

Southland District Council secured a NZ$6 million Regional Infrastructure Fund grant on 23 October for full replacement of the Monowai Suspension Bridge over the Waiau River in western Southland. The council is co-funding and delivering the project; the government announcement says the total cost remains commercial-in-confidence while the work is out to tender. Construction is planned to be complete by December 2027, but no award date, engineering contractor or cost breakdown was disclosed.

Lake Monowai Road is the only practical road route into the valley and provides access to a historic hydroelectric station, commercial forestry operations, farms, tourism and recreation. The bridge’s current gross weight limit is 28.5 tonnes. The council says that restriction forces heavy transport operators to split loads, stockpile forestry products or find costly alternatives for equipment movements. A replacement built to the HN-HO-72 design standard is intended to permit Class 1 heavy vehicles up to 50 tonnes, a substantial change in the loads the link can carry.

The funding decision changes the project scope from an earlier, more limited approach. Southland District Council said NZ Transport Agency funding had previously been secured only to replace the bridge deck, because the existing structure was considered sufficiently sound not to meet the agency’s criteria for a full replacement. Deck replacement would extend service life but leave the load restriction in place. Following discussions with local communities and businesses, the council pursued a Regional Infrastructure Fund application for full replacement, which has now been approved.

The bridge also provides an alternative access route into Fiordland National Park and maintenance access to the Monowai hydro station, which the government describes as contributing to the electricity network for more than a century. The council says temporary access arrangements will be investigated and publicised before construction begins. The next material uncertainties are the tender outcome, final project cost and traffic arrangements during the works. The grant announcement establishes funding and a delivery responsibility; it does not mean construction has started.

The council’s account explains why the funding application sought a larger intervention: the earlier transport-agency allocation covered only deck replacement, which would have prolonged the existing structure without removing its weight constraint. Full replacement is now the funded scope, with the council still responsible for co-funding and delivery. Both announcements leave the total cost undisclosed while the project is tendered.

## Sources

1. [Investment in vital bridge to Monowai Valley](https://www.beehive.govt.nz/release/investment-vital-bridge-monowai-valley). Government source, New Zealand Government, Beehive, Published 2026-10-23, Read 2026-10-25.
2. [Funding confirmed for Monowai bridge replacement](https://www.southlanddc.govt.nz/news-and-public-notices/news/funding-confirmed-for-monowai-bridge-replacement/). Government source, Southland District Council, Published 2026-10-23, Read 2026-10-25.