Sylhet–Tamabil–Jaflong 4-Lane Highway Project (N2)
Narrative description of Project: The Design Review Consultant (DRC) has reviewed the Detailed Design of Sylhet-Tamabil Road which was done under Technical Assistance for Sub-Regional Road Transport Project Preparatory Facility (TA-SRTPPF) by finalizing the following tasks: Task-1: Review and update the Feasibility /other studies and procurement documents for the Sylhet Tamabil Road Section.Task-2: Complete review of the Design (including revisiting the designs of high embankment sections, soft grounds, drainage, crossing bazar, villages and road cuts). Review pavement designs considering large number of heavy trucks and proposing PMB in top bituminous layer (wearing course and base course) with detailed specification and methodology. Task- 3: Design of toll plaza. Key features of the project are given below: § Total Road length 56.1km, divided 4 lane road with service lane both sides, main carriageway lane Width 7.3m, service lane Width 5.5m § Toll Plaza No.: 2; 10 lane central toll and 6 lane Surma bridge toll § Box Culverts: 48, under pass: 2, Junction: 7, Bazar Area 9, FOB: 17 Three types of Bridges, Type A, B and C with top width respectively 15.3m, 30.6m and 7.3m. Type A and Type C are built beside existing bridges and type B are standalone new bridges. Typical Pile dia 1.2m. For 411m Surma bridge 1.5m pile dia used. Total 20 Bridges (13 type A+C and 7 type B), Total bridge length = 2223m.