I-35/635 Turkey Creek Interchange

The Turkey Creek Interchange is a partial system interchange between I-35, I-635 and US-69 located in northern Johnson County Kansas. The interchange is constructed as a three-quarter interchange with several diagonal ramps, many of which are located in the median area of I-35. The partial interchange serves movements from north and southbound I-35 both to and from I-635, from US 69 northbound to I-635 or I-35 northbound, and southbound I-35 or I635 to US 69 Southbound. Currently there is no connection to I-35 South from US 69 North or from I-35 North to US 69 South.

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  Current Interchange Layout
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  Proposed Interchange Design

Current Intersection Conditions and Safety Concerns

This interchange has not had any significant upgrades since it was opened to traffic in 1975. Since then, the area around the interchange has become significantly urbanized and there has been significant growth in the region. Due to the current geometric configuration of the interchange, the increase in traffic volume has led to several safety concerns. These safety concerns arise due to tight merging areas, dangerous weaving conditions, and limited lane throughput causing traffic to back up onto interstates 35 and 635 and leading to a high risk of traffic incidents, injury and traffic fatalities. Additionally, some of the ramps have very tight curves on them leading to a higher risk of vehicles overturning or leaving the roadway. Due to these safety concerns and geometric deficiencies of the interchange it is clear that operational improvements are needed to improve the geometric design of the interchange, Improve the interchange capacity to favor southbound I-635 movements to I-35 south and northbound I-635 movements from I-35 north.

Indyroads Recommended Improvements

The recommended

Purpose and Need

Ideally