Jan 13, 2021 State transportation officials have announced construction is officially underway on a long-anticipated highway project in Quinlan. Courtesy logo State transportation officials have announced construction is officially underway on a long-anticipated highway project in Quinlan. The Texas Department of Transportation said in the weekly construction road report for the Paris District, for the week beginning Monday, Jan 11. that the initial steps are starting for the Quinlan Bypass. âThe contractor has begun placing barricades and will begin preparing the right-of-way and clearing/grubbing the project limits,â said the announcement. TxDOT also advised motorists who travel frequently in the area to pay special attention to all signs, barricades and traffic controls, and reduce their speed as they approach and travel cautiously through work zones.