Diversion and manhole levelling are essential supporting works to ensure safe and efficient integration of underground infrastructure with road and surface developments.



Diversion works are required when third‑party development activities, such as road widening, building construction, demolition, or utility installation impact existing NetLink Trust fibre cables, ducts, or manholes. Early identification during planning and design is critical to prevent potential service disruption, safety risks, and project delays.

All diversion works must comply with the Infocomm Media
Development Authority (IMDA) Earthworks Requirements.
You are required to:

Complete, clear, coordinated and endorsed documentation is required to enable NetLink Trust to assess the impact on existing fibre cables, ducts, and manholes, and to determine appropriate diversion or protection measures. Incomplete submissions may result in processing delays. You must submit the following and consult the assigned NetLink Trust engineer(s):
1. Technical and Supporting Drawings [PDF / CAD format]
Where applicable, include:
2. Plant Route Plans (PRP) [To be purchased prior to submission]
3. Trial Trench Report
To be conducted in conjunction with the Notification for Commencement of Earthworks (NCE).

All diversion applications must be submitted via the NetLink Trust Diversion Portal.
Step 1: Submit Diversion Application
NetLink Trust will review the submission, assess feasibility and impact, and advise if further information is required.
Step 2: Receive and Review Quotation
Upon successful assessment, a formal quotation will be issued covering:
Step 3: Accept Quotation and Make Payment
You are required to:
Payment modes:
Send payment transaction / Works Order details to: diversion.payment@netlinknbn.com
Step 4: Diversion Works Execution
Upon payment confirmation, NetLink Trust will schedule and carry out the works in coordination with your project timeline, where feasible.
Important Notes:




Manhole levelling is required when changes to road or ground levels cause manhole covers to be misaligned with the finished surface, commonly following roadworks, utility works, or ground settlement. Proper levelling ensures safety, accessibility, and compliance with engineering standards.

You are encouraged to submit your manhole levelling application early to avoid delays. All applications must be submitted via the NetLink Trust Diversion Portal.
Step 1: Submit Manhole Levelling Application
NetLink Trust will review the submission, assess feasibility and impact, and advise if further information is required.
Step 2: Receive and Review Quotation
Upon successful assessment, a formal quotation will be issued.
Step 3: Accept Quotation and Make Payment
You are required to:
Payment modes:
NetLink Trust designs, builds, owns and operates the fibre network infrastructure which is the foundation of Singapore’s Nationwide Broadband Network.
COPYRIGHT © 2026 NETLINK TRUST.
ALL RIGHTS RESERVED.