Current Projects

Below is a list of current traffic calming projects happening in Iowa City. 

Four- to Three-Lane Conversions 

The ultimate goal of four- to three-lane conversions is safety: reducing vehicle collisions and traffic speeds. In 2019, conversions were implemented on Clinton Street and Mormon Trek Boulevard. Portions of Gilbert Street are also being reviewed for this treatment.

In 2020 Keokuk Street, south of Highway 6 will be converted from 4 lanes to 3 lanes. This will help to slow traffic entering connecting residential streets, including Sandusky, where vehicle speeds have been an issue. Madison Street will be converted from 4 lanes to 3 in 2022.

The following videos shows how four- to three-lane conversions work and the benefits measured by the DOT on roads throughout Iowa. The video below is used with permission from the Iowa DOT.

Traffic Calming Program

The goal of Iowa City’s Neighborhood Traffic Calming Program is to reduce excessive speeding and/or traffic volumes on streets. Participation in the program is neighborhood-initiated and is not imposed by the City. To find out more about the traffic calming program, view the traffic calming brochure.

Current neighborhood traffic calming projects

Highland Avenue, from Boyrum Street to Keokuk Street  

Current Phase: Approved by City Council on Oct. 2, 2018. Speed humps will be installed in 2020.

Willow Street, from Muscatine Avenue to Brookside Drive

Current Phase: Approved by City Council on September 17, 2020. Speed humps will be installed in 2020.

Kimball Road

Existing speed humps on Kimball Road will be reconstructed in 2020.

Hickory Trail

Current Phase: Approved by City Council on February 4. Speed humps will be installed on Hickory Trail in 2020.

Jefferson Street/Glendale Road, between Clapp Street and 7th Avenue

Current Phase: Approved by City Council on March 4. Modified speed humps will be installed on this portion of Jefferson/Glendale in 2020

Residents on the following streets have petitioned the City for traffic calming.

7th Avenue 

Current phase: pilot program installed October 2018.

The City installed two radar feedback signs along 7th Avenue between Glendale Road and Court Street, one for northbound traffic and one for southbound traffic.

The signs display the driver's speed and caution them to slow if they are speeding. Research indicates that feedback signs may be effective at lowering speeds, especially among drivers exceeding the speed limit by 10 MPH or more.

Staff will evaluate the effect of these signs on speeds over time. No additional installations of radar feedback signs will be considered until the effectiveness of the devices has been determined.

Traffic calming on 7th Avenue

Friendship Street 

In 2018, speed humps were installed at four locations along Friendship Street, between Court Street and Brookside Drive.

Contact Information 

For questions about Iowa City’s Neighborhood Traffic Calming Program, contact Assistant Transportation Planner Sarah Walz at 319-356-5239 or