Client: ACE Consultants Ltd., Bangladesh (Joint Venture with BCL Associates Ltd., Bangladesh)
Location: Gazipur, Ashulia, and Savar
Duration: 2019
Project Overview
With Dhaka’s rapid urbanization and growing traffic congestion, the need for efficient and sustainable transport solutions has become critical. The Dhaka Outer Ring Road project is part of the broader Strategic Transport Plan (RSTP) approved in 2016. This ambitious infrastructure initiative aims to significantly improve regional connectivity and alleviate the city’s traffic problems. By creating a robust transport network linking key industrial hubs and international trade routes, the Outer Ring Road will provide a long-term solution for Dhaka’s transportation challenges.
The Outer Ring Road will connect major infrastructure, including the Padma Bridge, and link to industrial centers such as Gazipur, Ashulia, and Savar, while offering a direct route to Chittagong and its international port. This road will also improve accessibility to northwest Bangladesh and India, supporting both local commerce and international trade. Additionally, it is expected to enhance public transport options in the region, contributing to the overall socioeconomic development of Dhaka.
The Dhaka Transport Coordination Authority (DTCA) is leading this high-priority project, with initial steps including a comprehensive Transport Study, Feasibility Study, and Preliminary Design. Upon completion of these phases, the DTCA will proceed with the Detailed Design and subsequent implementation.
Scope of Work
ACE Consultants Ltd., in partnership with BCL Associates Ltd., was commissioned to conduct the Geotechnical Investigation for the Feasibility Study of the Eastern, Western, and Northern sections of the Dhaka Outer Ring Road. The objective of this investigation was to assess the soil conditions, groundwater levels, and other geotechnical factors that could impact the construction and sustainability of the road infrastructure.
Key Activities
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Preliminary Survey & Desk Research
A comprehensive review of existing geological data and previous geotechnical investigations was conducted. This included the analysis of topographical maps, remote sensing data, and previous borehole reports to identify potential challenges and opportunities in the designated project areas. -
Field Investigation
A detailed geotechnical survey was carried out across the Eastern, Western, and Northern parts of the project site, with an emphasis on high-risk zones and areas prone to soil instability. The field investigation included:- Borehole Drilling to assess soil composition and strength at various depths.
- Standard Penetration Tests (SPT) to evaluate soil density and bearing capacity.
- Groundwater Monitoring to track water table levels and understand potential challenges related to flooding or soil liquefaction.
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Laboratory Testing
Soil and rock samples collected during the field investigation were analyzed in the laboratory for properties such as shear strength, compressibility, and permeability. These tests provided essential data for assessing the structural integrity and feasibility of the road’s foundation design. -
Geotechnical Reporting
A detailed geotechnical report was compiled, outlining the findings of the field investigation and laboratory tests. This report included recommendations on soil stabilization techniques, drainage solutions, and foundation design tailored to the specific conditions of the Gazipur, Ashulia, and Savar areas. Additionally, potential geotechnical risks, such as soil erosion or settlement, were identified along with corresponding mitigation strategies.
Project Impact
The Geotechnical Investigation for the Dhaka Outer Ring Road played a crucial role in informing the feasibility of this large-scale infrastructure project. By understanding the subsurface conditions, the project team could address potential challenges early in the design phase, ensuring the long-term stability and functionality of the road.
The successful completion of this investigation has set the foundation for the next phases of the project, enabling the DTCA to proceed with the Detailed Design and eventually the implementation of this vital transport link. Once completed, the Dhaka Outer Ring Road will significantly enhance mobility within and around the capital, reduce traffic congestion, and support regional economic growth.
