Topeka begins construction on Polk-Quincy viaduct project

Kansas officials, including Governor Laura Kelly, celebrated the start of construction on the Polk-Quincy viaduct project in Topeka. The $239 million project aims to replace an aging section of Interstate 70, improving safety and traffic flow. The project will rebuild 2.5 miles of I-70 and includes utility relocation work funded by the city. Construction will focus on widening the highway and building a new viaduct, with a planned shutdown of I-70 for six months in late 2026. KDOT has acquired most properties needed for the project, with one remaining under an oral agreement. The new viaduct will feature two elevated bridges for eastbound and westbound traffic, enhancing safety by flattening a sharp curve.