Short Term Maintenance work from km 598.00 to km 634.00 of NH-31 (New NH-17) under NH Division-IX in the district of Jalpaiguri, West Bengal during the year 2026-27.

Clearing grass and removal of rubbish up to a distance of 50 metres outside the periphery of the area. (Reference to MoRT&H's specification clause 201)

Construction of sub-grade and earthen shoulders with approved material obtained from borrow pits with all lifts & leads, transporting to site, spreading, grading to required slope and compacted to meet requirement of table No. 300-2 (Reference to MoRT&H's specification clause 305). With River Bed Material

Filling Pot-holes and Patch Repairs with open-Graded Premix surfacing , 20mm. Removal of all failed material,in the pavement courses and if necessary below the pavement,until the root causes of the failure is removed, the trimming of completed excavation to provide firm vertical faces; specified for the pavement layer; application of tack coat conforming to cl. 503 of MORT&H's specification, on to the sides and base of excavation prior to placing hot bituminous material as per clause 510 and the compaction,trimming and finishing of the surfaces of all patches to form a smooth continuous surface, level with the surrounding road as per the requirement of clause 3004.2 of MORT&H's specification .

Providing and applying tack coat with Cationic Bitumen Emulsion (RS1) complying with IS:8887 using Emulsion pressure distributor on prepared bituminous/granular surface cleaned with mechnical broom and high pressure air jet at the rate of 0.20-0.30 kg/sqm .(Reference to MORT & H's Specification clause 503).

Providing and laying seal coat sealing the voids in a bituminous surface laid to the specified levels, grade and cross fall using. Type A and B seal coats (Reference to MORT&H's specification clause 511) iv) Case- IV: Type B Providing and laying of premix sand seal coat with bitumen emulsion of suitable approved grade.

Fog Seal : This work shall conform to the requirements of cl. 513 of these specifications and shall consist of an application of Emulsified bitumen, without any aggregate cover for sealing fine hair-cracks or for rejuvenating oxidised bituminous surfaces. Areas having cracks with less than 3mm width shall be considered for this treatment, unless otherwise instructed by the Engieer-in-Charge (Reference to MORT&H's specification 3004.3.2).

Providing and fixing Retro Reflectorised cautionary mandatory and informatory sign as per IRC 67 made of intensity grade sheeting vide clause 101.3 fixed over aluminium sheet 1.5 mm thick supported on mild steel angle Iron post 75 mmx75mm x 6 mm finally fixed to the ground by means of properly designed foundation with M15 grade concrete 45 cmx45 cmmx60 cm , 60 cm below the ground level as per approved drawing (Reference to MORT&H's specification 801).

Providing and erecting direction and place identification retro reflectorised sign as per IRC:67 made of high intensity grade sheeting vide clause 801.3, fixed over aluminium sheeting, 2 mm thick with area not exceeding 0.9 sqm supported on a mild steel single angle iron post 75 x 75 x 6 mm firmly fixed to the ground by means of properly designed foundation with M15 grade cement concrete 45 x 45 x 60 cm, 60 cm below ground level as per approved drawing (Reference to MORT&H's specification 801).