The Utah Department of Transportation (UDOT) is improving northbound I-15 in Salt Lake County by adding a new general purpose lane from Bangerter Highway to 9400 South and a collector-distributor system* from 9400 South to I-215. This project is currently increasing mobility and reducing congestion along I-15. Construction began summer 2019 and was completed by late 2020.
*What is a Collector-Distributor System?
A collector-distributor system parallels the mainline freeway and connects to more than one entrance/exit to the freeway. This system improves traffic flow by allowing mainline through traffic to bypass exit and entrance ramps. (See graphic below).