Project Description:

Construction of new Tunnel No. 4 (4.00 meters diameter x 6.40 kilometers length) from Ipo to Bigte.


Norzagaray, Bulacan

Project Cost:

US$123.64M (Loan)

US$10.34M (GOP)

US$133.98M (Total)

Contract Amount with CMC Ravena = PhP 3.29B

Funding Source:

ADB (design and built contract)

Status:  (as of 30 September 2017)


  • On-going construction works with 18.04% over-all physical accomplishment to date or 1.95% ahead of schedule.


  • Awaiting “no objection” from ADB on the results of the technical evaluation, and ADB’s clearance to proceed with the opening of the financial proposals submitted by the five (5) shortlisted consultants for the review of Detailed Engineering Design & Construction Management.


The Angat Water Transmission Improvement Project (AWTIP, the “Project”) aims to improve the reliability and security of theraw water through partial rehabilitation of the transmission system from Ipo to La Mesa and the introduction of water safety, risk and asset management plans.

The Project involves the construction of a new 4.00 meters tunnel (Tunnel no. 4) by 6.30 kilometers including intake and outlet works.