Learn about four to three lane conversions.

The video below is used with permission from the Iowa DOT.

The City is l
Mormon Trek 4 lane to 3 lane conversion.
ooking to make safety improvements to Mormon Trek Boulevard by reducing traffic lanes. 

Select a topic below to be directed to the specific section on this page. 

Project Proposal 

An image of crews working on the four lane to three lane conversion.
The proposed improvements focus specifically on safety, including traffic lane reconfiguration that would change the road from four lanes (two operating in each direction) to three lanes (one lane in each direction and a center two-way, left turn lane). The City is looking to make these conversions on Mormon Trek Boulevard, from Melrose Avenue to Highway 1, and other areas of town.

A conversion was also recently completed on First Avenue, between Bradford Drive and Highway 6.  

The lane reconfiguration will allow for additional improvements like replacing traffic signals and adding paving for bike lanes. Along Mormon Trek, the new lanes would also add a northbound to eastbound right turn lane at the Benton Street intersection and new sidewalk ramps. 

The Iowa Department of Transportation will help with the development of the project through Traffic Safety Improvement Program funding.

Conversion Safety 

Research suggests significant safety benefits can be achieved through four-lane to three-lane conversion projects, including reduced crashes. The City selected Mormon Trek Boulevard for conversion as the volume of traffic does not necessitate the current number of lanes. The roadway also has several side street intersections, making it a good candidate for conversion. Pictured below are common crashes that occur on four-lane, two-way traffic roads. 

An image of a common crash on 4 lane roads



An image of a crash on four lane roads

Project Meetings

The City hosted public meetings for the Mormon Trek project in June 2016. After those meetings, time was spent developing the design, and construction began in August 2018.

Materials from the presentations are available below: 

Helpful Resources

Project Contacts

Tony Culver, Snyder & Associates Project Engineer:
Scott Sovers, City of Iowa City Senior Civil Engineer: