Project Overview

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 will help increase mobility and reduce congestion along I-15. Construction began summer 2019 and is expected to be complete by late 2020. 

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Project Map

*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).

Collector Distributor System Graphic Onl