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Colombo-Katunayake Expressway

Our Role

SMEC, as Employer’s Representative, had responsibility to ensure the design and construction of the Expressway conforms to specified standards and quality. A key component was the provision of training and transfer of technology to Road Development Authority (RDA) personnel.

Project Overview

The Colombo-Katunayake Expressway provides a high-speed road link between Colombo City and Free Trade Zone at Katunayake, as well as the Bandaranayake International Airport.

The 4-lane divided Expressway, approximately 24.6 km in length, is one of the first fee levying roads to be built in Sri Lanka. A substantial length of the Expressway is located on very soft ground making soft ground treatment a major project component.

Key features of the Expressway included:

  • 4 interchanges at New Kelani Bridge, Peliyangoda, Ja-Ela and Katunayake
  • 2 major bridges, a 70 m bridge at Ja-Ela and an 80 m bridge at Dandugam Oya
  • 13 overbridges
  • 6 underpasses
  • 18 minor bridges
  • Drainage structures
Sri Lanka
Technical Area:
Road Development Authority

Learn More

To learn more about our Roads, Bridges & Highways capabilities please fill out the form below and one of our team will be in touch.