BRO engages consultants to examine tunnel proposal at Ambithang Nallah on NSH

Gangtok, 02 Apr:

The Border Roads Organisation has engaged Strata Geosystems [India] Pvt Ltd of Mumbai to prepare a feasibility report for the construction of a tunnel to bye-pass the landslide-prone area at Ambithang Nallah. The tunnel is proposed downstream of the nallah to join the Mangan-Sanklang road in North Sikkim.

The Border Road Task Force [BRTF], which has been looking after the maintenance of the North Sikkim Highway, informed the Division Bench of the High Court that after much deliberation, the interim report of the Geological Survey of India, North Eastern Region, was submitted in the month of November last.

The Geological Survey of India-NER, in its report, said that a specific site study of Ambithang slide is required for tackling the sinking zone, adding that the general topography of the Ambithang Nallah would require a long highway tunnel likely to pass through the mica schist with quartzite bands that underpins the area.

The BRTF told the High Court bench that the query made by the Geological Survey of India has also been attended to, adding that the BRO and Defence Ministry along with the Secretary of Surface Transport will adopt the report immediately on receipt of the same from the agency and take necessary steps to initiate the work.

The bench was hearing a Public Interest Litigation filed by the Public and Panchayat of Kabi Lungchuk constituency, North Sikkim, today and directed the Union Government to submit the status report on further action taken by them.

The matter will be next heard on 01 May 2018

The BRTF has already upgraded the road up to Seven Sisters Falls (from Tashi View Point) towards North Sikkim after the High Court intervention following the PIL.