27

Malolos Clark Railway Project, Philippines 

Year

2021 to current

Project value

£6.2M

Features

Your project, our expertise

Construction site | groundwater management

Partner with WJ Group and discover how our proven solutions can shape the success of your project.

WJ’s Groundbreaking Role in the Philippines 

The Malolos Clark Railway Project section CP N-04 is a key segment of the 163 km North–South Commuter Railway (NSCR), designed to ease severe traffic congestion across Metro Manila and surrounding provinces.

Spanning 53.1 km, the railway connects Malolos, Bulacan—located 40 km north of Manila—to the Clark Economic Zone and Clark International Airport (CIA) in Central Luzon.

The northern section, which includes 6.5 km of viaduct, cut-and-cover tunnels, and the Clark Airport terminal station, is being delivered by a joint venture between Acciona (Spain) and EEI (Philippines). 

WJ’s Dewatering Expertise

Following the successful completion of dewatering works for the Dubai Expo Metro Extension (also led by Acciona), WJ was invited to design and implement the dewatering systems for CP N-04. Excavations required lowering groundwater levels by up to 20 meters, making this one of the largest dewatering projects undertaken in the Philippines. 

The scope of Works included dewatering for

CIA Station box

Main underground rail line 

Gil Puyat Avenue Underpass 

~100 viaduct pits 

Techniques used

Deep wells

Wellpoints

Sump pumping 

Rapid Mobilisation & Execution  

WJ mobilised swiftly, sourcing equipment from the UK, Dubai, China, and local suppliers. At peak activity: 

  • 100+ site staff were deployed.
  • 3 drilling rigs operated around the clock.
  • Despite encountering unexpected clay layers within silty sand, WJ adapted by installing an internal pressure relief system within the station box—ultimately delivering 6.5km of dry formation to the contractor.
  • Expanding Horizons  
  • The success of MCRP has positioned WJ as a trusted partner in the Philippine construction market, leading to new contracts in:
  • Batangas Power Plant
  • Camana Waste-Water Treatment Plant
  • Manila Subway

Other projects

WJ Group have completed many projects globally. Click on the links below to learn more about what we do.

Contact WJ Group

Are you ready to see what else our vision can bring to your projects? Why not speak to our team of groundwater experts today?