Kottawa - Pinnaduwa (2011): Rs 1.0 billion per km - inflation adjusted (2025) Rs 2.9 billion per km
Colombo - Katunayake (2013): Rs 1.8 billion per km - inflation adjusted (2025) Rs 4.5 billion per km
Source:
https://www.sundaytimes.lk/131027/news/cost-of-airport-expressway-rs-1-8-b-per-km-67258.html
Rambukkana - Galagedara (2025): 112/18 = Rs 6.2 billion per km
Source:
https://www.newswire.lk/2026/05/29/...ana-galagedara-stretch-of-central-expressway/
Inflation adjustment calculator
https://www.calculatorinflationrate.com/sri-lanka-inflation-rate-calculator/
Summary: 2025 cost per km
Kottawa - Pinnaduwa: 2.9 billion per km
Colombo - Katunayake: 4.5 billion per km
Rambukkana - Galagedara: 6.2 billion per km
NPP ආණ්ඩුවේ highway project එකේ වියදම වැඩි උනේ, කඳු හෙල් සහිතව ඉතිහාසයේ අමාරුම highway project එක නිසාද?
Colombo - Katunayake (2013): Rs 1.8 billion per km - inflation adjusted (2025) Rs 4.5 billion per km
Source:
https://www.sundaytimes.lk/131027/news/cost-of-airport-expressway-rs-1-8-b-per-km-67258.html
Rambukkana - Galagedara (2025): 112/18 = Rs 6.2 billion per km
Source:
https://www.newswire.lk/2026/05/29/...ana-galagedara-stretch-of-central-expressway/
Inflation adjustment calculator
https://www.calculatorinflationrate.com/sri-lanka-inflation-rate-calculator/
Summary: 2025 cost per km
Kottawa - Pinnaduwa: 2.9 billion per km
Colombo - Katunayake: 4.5 billion per km
Rambukkana - Galagedara: 6.2 billion per km
NPP ආණ්ඩුවේ highway project එකේ වියදම වැඩි උනේ, කඳු හෙල් සහිතව ඉතිහාසයේ අමාරුම highway project එක නිසාද?