- Topographic surveying (total station method/TSM)
- Technical feasibility study (pavement, soils, materials,traffic, structures, drainage)
- Environmental feasibility study (wild life sanctuary,tree stocks, cultural heritage)
- Economic feasibility study (project cost estimate,economic analysis)
- Social impact and resettlement studies (screening,census, action plan)
- Preliminary and detailed engineering design (preliminary and detailed project report/PPR & DPR)
- Preparation of tender documents (international competitive bidding/ICB).
The arterial National Highway/NH-2 links New Delhiwith Calcutta; about 80% of through-traffic comprises commercial vehicles.
Within the framework of the Third National Highway Project financed by the International Bank for Reconstruction and Development/IBRD consultancy package V involved the 4-laning and strengthening of the existing 2-lane, 7 m wide section from km 180 (Aurangabad) to km 398.75 (Barwa Adda), which passes through plain and rolling terrain (min. 100m, max. 410m above m.s.l., 7 largerivers) in the State of Bihar.
The upgraded highway (design speed 100 km/h, width 7.25 m plus max. 5.00 m median and 2.50 m shoulder) is possibly to serve as a public toll road (i.e. with toll plazas plus frontage/service roads for local and non-motorized traffic, especially in congested areas).
Construction is envisaged in 3 homogeneous sections.
DORSCH CONSULT in association with GHERZI EASTERN LTD. of Mumbai was charged with the preparation of a feasibility study, engineering design and tender documents.