New Zealand Transport Agency (Waka Kotahi)

SH39 Mangati Stream Bridge Permanent Structure Replacement

This is a Physical Works contract for the replacement of the Mangati Stream Bridge (BSN 520) located on SH39 approximately 7 km south of Pirongia. The existing bridge was damaged in the February 2026 flooding and a temporary one-lane bridge has been installed adjacent to the location.

The Contract Works comprise of:

• Construction of the new bridge with a single span superstructure comprising of four fabricated steel I-girders and a precast reinforced concrete bridge deck.
• Installations of pilled foundations. The superstructure is to be cast into the abutments. Note that steel pile casing will be procured separately by the Principal and supplied to the contractor.
• Installation of a TL-5 rigid bridge HT rail including abutment transitions, semi-rigid to rigid transitions, W-beam sections, and leading-end terminals on the bridge approaches.
• Temporary support for services during the works and permanent reinstatement on the new bridge.
• Scour protection works/river training and earthworks.
• Removal of the existing temporary bridge and associated earthworks, site restoration, and site de-establishment (excluding bridge superstructure – to be removed by Downer)

Only tenderers pre-qualified to level “Bridge Construction – Level B (3B)” and “Surfacing – Level C (2C)” under the terms of the Transport Agency’s Prequalification System are eligible to submit a tender.

Electronic copies of the Request for Tender documentation are attached to this advertisement.

ALL tenderer’s queries are to be SUBMITTED through the GETS Questions and Answers.

All responses to tender queries/clarifications will be answered by Notice to Tenderer which will be available in the GETS addenda.

Tender submissions shall be uploaded to GETS eTender box in two separate files.
The GETS file upload limit is 50MB. The files should be labelled:
- File No 1 – 13808 SH39 Mangati Stream Bridge Permanent Structure Replacement - Proposal excluding Price
- File No 2 – 13808 SH39 Mangati Stream Bridge Permanent Structure Replacement - Price
(pdf format PLUS excel spreadsheet Schedule of Prices)

Tender submissions will only be accepted electronically via the GETS eTender Box.
Tenderers should refer to the GETS website for instructions on uploading their tender submission files https://www.gets.govt.nz/SupplierUserTenderHelp.htm

Additional tender documents and drawings will be uploaded next week.

Department/Business Unit: New Zealand Transport Agency