wysiwyg web page builder


The I-435 corridor was originally constructed in 1966 as a six-lane freeway and an additional lane was added in phases from 1983 to 1994. Improvements have been made over the past 20 years by both Kansas Department of Transportation (KDOT) and MoDOT but this corridor has been left virtually unchanged. This segment of freeway provides an important link between residents and jobs on the south side of the metropolitan area. Increased corridor maintenance expenditures, safety problems and traffic congestion have led MoDOT to develop a transportation master plan for this segment of interstate.

Project Status: Project Team Assembly
Click here for project news
Click here for project documents
Click here to sign up for project updates


The study limits are from State Line Road to Grandview Road in Jackson County. The study area includes the local service interchanges of State Line Road, Wornall Road, Holmes Road and 104th Street. The study area also includes the arterial roadway network north and south of the I-435 freeway corridor. The study builds on work previously performed by MoDOT and will culminate in a master plan for this section of I-435.

I-435 South Corridor Study

 The purpose of this study is to evaluate what types of improvements are needed in this section of the I-435 corridor to provide a safe and efficient transportation corridor for all modes.

Average Daily Traffic

I-435 has the highest traffic volume of any MoDOT facility in Kansas City and the second highest traffic volume in the metropolitan area.

Bridge Assessment

This report documents  existing bridge plans and inspection reports by MoDOT. The site was visited on May 14, 2014 to develop an initial assessment of the condition of the bridges.

Average Travel Times

According to KC Scout's Annual Report, the I-435 corridor is one of the top three most-traveled segments. Longer travel times are directly related to the level of congestion, average speed and traffic volumes.


Upon review of the widening needed, it became apparent that an additional three-foot width would accommodate most of the complementary strategies including managed lanes, hard shoulder running and bus on shoulder. Any of the optional alternatives could be accommodated if the through lanes were narrowed to a minimum of 11 feet. Additionally, widening the base typical section three feet would provide for a normal left shoulder width of 10 feet, which would address a concern that FHWA has expressed concerning the median shoulder width where three or more lanes are present.

Other complementary strategies of bicycle/pedestrian improvements, ramp metering enhancements, roadside motorist assist and crash investigation sites, traffic signal coordination, alternative route improvements and other Intelligent Transportation System and Integrated Corridor Management solutions are also part of the preferred concept.


Aerial View


Groundbreaking Ceremony


As part of construction on this project, MoDOT will impact the Blue River Greenway Trail for a short period of time. To keep bike and pedestrian traffic flowing, MoDOT is considering a defined detour along one of the lanes of 104th Street. We are currently accepting comments on this portion of the project. Click here to submit your comments or add your name to an e-mail list for updates on this project. 


If you have comments or would like to recieve updates on this project, please let us know!