The Blue Line Extension is an extension of the initial mass rapid transit system in Bangkok running from Hua Lamphong to Bang Sue, named the MRT Chaloem Ratchamongkhon Line. Total length of the extension is about 27 km, comprise of 2 sections: Hua Lamphong – Bang Khae and Tao Poon – Tha Phra Sections

NCE was responsible for construction supervision of elevated guide way structures - precast viaduct, portal frame inside and outside station, Chao Phraya River Bridge, Borommaratchachonnani and Khlong Bangkok Noi Cantilever Bridge and Sirindhorn space truss.

Construction and engineering services include stage by stage analysis of the bridge during construction and pre-camber analysis.