Weerawong C&P has been engaged by the Office of the Eastern Economic Corridor of Thailand (EEC) as an advisor for the THB 237 billion (USD 7.6 billion) high-speed rail link for three airports (Don Mueang, Suvarnabhumi, and U-Tapao International Airports) connecting Bangkok to the EEC province with stations at important hubs in major cities along the Gulf of Thailand.

The firm works closely with the EEC in reviewing the bidding documentation (such as the business case and the request for proposals) and reviewing bidding submissions. The firm also advises the working team of the State Railway of Thailand in relation to the PPP framework and its application to this particular project.