Johnson County Gateway Project Phases:

Phase 1

Substantially completed in December 2012, this phase (Yellow Project) added two additional lanes running in each direction along I-35 from 119th Street to I-435.

Phase 2

Beginning in 2014, this will be the design-build phase of the project and will address many of the existing traffic concerns identified in the Concept Study.

Phase 3

Still pending funding and timing, this phase will build the remaining interchange improvements identified in the Concept Study once Phase 2 is completed.


Project Timeline:

  • Fall 2008

    Johnson County Gateway: I-435/I-35/K-10 Concept Study began. The Concept Study evaluated the growth and development in the area in order to provide safety and traffic improvement recommendations for the interchange area.

  • Fall 2009

    KDOT local consult meetings identified the Johnson County Gateway as a high priority for the region.

  • May 2010

    The Kansas Legislature passed Transportation Works for Kansas (T-WORKS) a 10-year transportation program. As part of that program, the legislature approved the use of design-build as an alternative delivery method on one project in Johnson or Wyandotte County. Because of its size and complexity, the Johnson County Gateway Phase 2 was selected as the first major design-build project for Kansas.

  • February 2011

    Final Concept Study completed and provided a phasing recommendation to make $500-$600 million in improvements to the I-435/I-35/K-10 Interchange.

  • March 2012

    KDOT selected HNTB to serve as its Project Manager Consultant (PMC) to assist KDOT in developing the Phase 2 project procurement documents for selection of the design-build team.

  • June 2012

    Phase 1: Construction on Phase 1 of the Johnson County Gateway Improvements began. An additional lane was added on I-35 from 119th Street to I-435.

  • December 2012

    Phase 1: Construction of Phase 1 is substantially completed. KDOT held an Industry Workshop to introduce the Phase 2 design-build project to industry representatives and interested contractors.

  • January – March 2013

    Phase 2: Public input gathered through focus groups, online surveys, workshops and presentations to stakeholder groups.

  • March 2013

    Phase 2: Request For Qualifications (RFQ) was released. The RFQ was used to solicit responses from qualified design-build teams.

  • May 2013

    Phase 2: Draft Request For Proposals (RFP) is released to shortlisted teams. KDOT publishes shortlist of most qualified teams.

  • December 2013

    Phase 2: Proposals due from shortlisted teams.

  • January 2014

    Phase 2: KDOT selects Gateway Interchange Constructors as the design-build team to complete the project.  Selection was announced on January 10, 2014.

  • April 2014

    Phase 2: KDOT, along with Governor Sam Brownback and officials from the cities of Lenexa, and Olathe and Johnson County, broke ground in Lenexa for Kansas' first design-build project.

  • Spring 2014

    Phase 2: Construction starts on Phase 2 of the Gateway Project.

  • Summer 2015

    The interchange improvements at K-10 and Ridgeview Road must be completed by July 1, 2015.

  • December 31, 2016

    Phase 2: All substantial construction on Phase 2 of the Gateway Project should be complete.