Loop 101 Widening Study: Interstate 17 to Pima Road Study

Loop 101 Widening Study: Interstate 17 to Pima Road Study mapCompleted 2016 - ADOT, in cooperation with the Federal Highway Administration (FHWA), initiated a Design Concept Report (DCR) and environmental study to evaluate the addition of one general-purpose travel lane in each direction on a 13-mile stretch of Loop 101 (Pima Freeway) from I-17 to Princess Drive.

Growing traffic demand has caused the Loop 101 corridor to become increasingly congested during the morning and evening peak travel periods, and traffic volume projections indicate the congestion will worsen in the future. This study evaluated the addition of general-purpose travel lanes to increase freeway capacity and help alleviate increased levels of traffic congestion in the future.