Work category 322: Replacement of bridges and structures

Introduction

This work category provides for the upgrade or replacement of existing bridges and other road structures, where this is the main purpose of the work.

This definition applies to the 2012-15 NLTP.  For the 2015-18 NLTP please refer to the updated definition for work category 322.

Examples of qualifying activities

Examples of qualifying activities include, but may not be limited to:

• replacing a structurally inadequate bridge
• replacing a bridge for non-structural reasons, such as inadequate width or waterway
• modifying an existing bridge to increase its structural capacity to a level higher than originally provided
• widening an existing bridge
• approach work estimated to cost less than $50,000
• for local road projects property purchase costs less than $50,000
• replacing retaining structures, including sea walls, that support a road
• replacing tunnels
• replacing culverts having a cross-sectional area of 3.4 square meters or greater, and
• sealing bridge approaches on unsealed roads, where:
  • the approach sealing is limited to a maximum distance of 50 metres from each abutment, and
  • the seal continues over the entire structure to ensure consistency of skid resistance.

Other potential activities not shown above should be discussed with the NZTA for eligibility.

Exclusions

Exclusions include:

• the provision of a new bridge or other structure where no structure presently exists – these are funded under Work category 323: New roads.
• replacement of a cattle stop – this is funded under Work category 215: Structures component replacements, and
• maintenance of existing retaining structures should be conducted under Work category 114: Structures maintenance.

Funding assistance rate

The usual funding assistance rate for this work category is:

• the Approved Organisation’s  construction rate,
• the Approved Organisation's special purpose roads construction rate, and
• 100 percent for the NZTA (state highways).

End of year carryover

Transport Investment Online (TIO) will automatically carryover the unspent allocation every year.  Therefore it is vital that Approved Organisations and the NZTA (State Highways) declare the unused allocation for completed projects by making a cost scope adjustment via the Reviews module in TIO.

NB A future upgrade to TIO will allow the project to be marked as completed.

Conditions

The conditions for replacement of bridges and structures include:

• the cost of proposed replacement must be checked against the NZTA’s policy on uneconomic roading facilities.
• new or replacement bridges proposed for funding from the NLTF must conform to the requirements of the NZTA’s Bridge manual. The NZTA may approve a specific departure from these design standards in terms of its policy on uneconomic roading facilities.