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Top-Down Underpass Construction

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Top-Down Underpass Construction Method is used in Qatar. The top-Down construction method has been suggested by the construction contractor as an alternative to the conventional cut-and-cover construction method used in Qatar. This to help minimize the traffic disruption and to be able to implement the temporary traffic management (TTMs) due to limited Right of Way space where the underpass construction works had to be implemented.  It also helped to restore traffic at the signalized junction on top of the underpass much earlier, prior to the completion of ongoing construction works in the underpass. This helped to optimize the overall construction duration.

Highway Projects Department projects:
A notable example of a project where the Top-Down Underpass Construction Method was used is Project D-Ring Road.



​There is a paper that was submitted as part of the 2nd International Conference on Civil Infrastructure and Construction (CIC 2023) held 5-8 February, 2023. Link:  Qatar University