The Public Works Authority (Ashghal) recently issued 11 tenders to implement a number of infrastructure projects, most of which pertain to roads and drainage networks.Most of these projects are open to Qatari companies only, according to a report in local Arabic daily Arrayah.One of the tenders pertains to the development of roads in the northern parts of Qatar, valued at QR3.5mn. Another tender is for a project that involves designing and creating key elements of a drainage system (QR2.5mn).There is also a tender for a service contract to check and clean sewage networks (QR2.45mn) as well as a contract to design and create a system for treated sewage water (QR2.5mn).Ashghal has launched an e-payment service to enable bidders to download and buy tender documents through its website.