The State Railway of Thailand (SRT) has reportedly announced that it will start the bidding process for two new railway projects in February.

SRT governor Nirut Maneephan revealed that the construction of the two dual-track projects will require an investment of nearly THB120bn ($4bn), reported Bangkok Post.

He also stated that the new routes will improve fast and modern railway systems to the north and northeastern regions of Thailand.

The winners of the contract will be announced by the SRT with construction on the projects to commence before the end of this year.

Worth THB72bn ($2.4bn), the Den Chai-Chiang Rai-Chiang Khong route will be 313km-long, reported the publication.

The route will span from Den Chai Station in Phrae province to Chiang Khong Station in Chiang Rai province.

The SRT will segregate the project in three contracts, which will include railway construction, signal system installation, and construction of an underground tunnel.

The 355km-long Ban Phai-Maha Sarakham-Roi Et-Mukdahan route will require a $2bn (THB55bn) investment, according to the publication.

The terms of reference of the projects will be published on the website of SRT this month.

In November 2020, Thailand unveiled plans to open Bang Sue Grand Station this year as part of its efforts to mitigate traffic congestion in Bangkok.

Covering 1,280 acres, it will be the largest railway station in South-East Asia and replace the existing Bangkok Railway Station (Hua Lamphong).