Feasibility Study and Detailed Engineering Design for Kampala Southern Bypass, Uganda

Key facts:
Feasibility study, Traffic study, Route options analysis, Multi Criteria economic evaluation, Environmental and social consideration, Viaduct construction, toll plaza studies and layout designs, drainage design, Detailed design of 17 Km of the urban expressway.

Project Background
The road forms a component of the vitalinternational highway connecting Uganda to the port of Mombasa on the Kenyan coast. Moreover,this international highway also functions as the primary transit corridor for transportation of imports via Kenya and Uganda to other land-locked
countries beyond Uganda, primary amongst which are Democratic Republic of Congo, Rwanda, Burundi and Southern Sudan.

The commencement of the Southern Bypass project will be in the vicinity of Butabika, in the eastern outskirts of Kampala, where it will connect with the New Kampala – Jinja Road. The objective of the proposed roadway is to connect, in the vicinity of Munyonyo, with the forthcoming new Kampala – Entebbe road via a spur road which will be a component of that project.

Scope of work:

Feasibility study and detailed engineering design including traffic studies, preliminary and detailed engineering design, traffic surveys, topographic and cadastral surveys, geotechnical investigation, bridge designs, socio-impact assessment and RAP, and Environmental and Social Impact Assessment for a new road south of Kampala to form part of Kampala Southern Bypass to compliment the current North Bypass in alleviating congestion in CBD. The project comprises of a divided 4-lane 17km new road with over 12 km of road traversing through swamps and elevated on a via duct and allows connection to junctions through 4 interchanges and Roads over Bridges for links and expected partly to be fenced to allow limited access with lighting and provisions for toll plazas if the choice to toll is adopted.

The Southern Bypass is intended to provide a section of high standard road which, in conjunction with the forthcoming Kampala – Entebbe expressway project, will provide a complete bypass of the southern zone of Kampala city. Indeed, together with the Northern Bypass, and its upcoming improvements, the entirety will form a complete city outer ring road.

Detailed Description of Actual Services Provided by ICS:

• Initial development of a number of potential corridor options for the manner in which the capacity improvement between Kampala and Jinja may be implemented.
• Detailed feasibility study and preliminary engineering of 3 potential route options for the new alignment
• Multicriteria economic evaluation, risk analysis, road safety evaluation, traffic surveys and modelling using SATURN
• Preparation of Resettlement Action Plan including socio-economic surveys and public consultations
• Detailed topographic, geotechnical, and hydrological surveys including materials source studies
• Detailed highway and bridge design including toll plaza studies and layout design
• Preparation of land acquisition schedules and plans
• Preparation of tender documents for international competitive bidding under FIDIC conditions of contract
• Analysis of unit rates and preparation of detailed engineering cost estimates based on final BoQ

Structures Design:
Kampala Southern Bypass (KSB) intersects with four primary radial roads of the existing road network and merges with another major road, Munyonyo Spur Road, at its southern terminus. Each of the five (5) locations requires a grade-separated junction to provide connections from the expressway to the local road network. Each grade-separated junction requires one or more bridges. The types of structures take the form of overbridges, underbridges, underpasses.

Non-Motorized Units Provisions
KSB is a limited access expressway, NMU provision had to be put in place physically separate from vehicle traffic. NMU provisions were proposed either at the top of cuts or near embankment toes. Where required