Summary of I-35 and Gardner Road Diverging Diamond Interchange (DDI)


Contact Information

Organization: KDOT
Contact person: Allison Smith
Title: Environmental Coordinator/MPO Liaison
Phone: 785-296-0341
Organization address: 700 SW Harison
  Topeka, KS    66603

General Information

1. Project name: I-35 and Gardner Road Diverging Diamond Interchange (DDI)
2. City(ies), County(ies), State: Gardner, Johnson, KS
3. Routes, interchanges and/or intersections: I-35, Gardner Rd
4. Primary project mode: Highway/roadway 
5. Supplementary project mode(s): * Active Transportation * Bridge * Freight * Transit )
A bridge over I-35 is part of the ultimate design of this interchange (DDI), but it is also a part of the interim interchange design. The portion of the interchange that is the bridge is the primary way that multiple modes of transportation will be connected and incorporated into the facility. The bridge will be designed to accommodate pedestrians via sidewalks, transit by way of a wider bridge, bike access to across the bridge, and will allow greater access for freight movement to and from the BNSF Intermodal Facility. The interim and ultimate configuration of the interchange will also allow for better traffic flow and efficiencies for vehicular and freight traffic onto and off of I-35.
6. Project Purpose: * System expansion (added capacity) * System preservation, rehabilitation or replacement * System operations and management )
7. Project sponsor: Allison Smith
8. Total budget in 2019 dollars: $30000000
9. Project description: The intent of the project is to construct an interchange that will serve current and future traffic demand in this area of southwest Johnson County and address congestion issues. The primary users will be motorists and freight entering and exiting the BNSF Intermodal Facility and warehouse developments. With the associated bridge replacement, non motorized travelers and future transit riders will be accomodated in a much more safe and practical manner.
10. Scope: To the extent that we know now, the number of lanes will be increased on Gardner Road and the I-35 ramps but no new through lanes are proposed on I-35. The project will serve motorists, freight, bicycles, and pedestrians in the interim and full build out. The major work is replacement of the Gardner road bridge over I-35 and reconfiguration of the interchange to a DDI. The bridge will accommodate the large amount of freight trucks coming through Gardner on their way to the intermodal facility in Edgerton.
11. Project schedule: The interim interchange project is proposed to be constructed in FFY 2021. Reconstruction of the Gardner Road bridge over I-35 would be constructed as part of this interim project. The ultimate interchange would be out in future years--at least 10 years.

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