Westbound I-435 to Quivira Road exit ramp NOW OPEN!!


How long will the Johnson County Gateway Phase 2 Project take to complete?

Phase 2 of the Johnson County Gateway Project is scheduled to be complete by December 31, 2016.

When will construction begin and where will it start?

Construction will begin in mid to late May 2014.  You will see some activity along the entire project route (utility marking, surveying, etc.) through the Spring.

Will there be any improvements seen to the following direction of travel: The congestion resulting from drivers coming North on I-35, then taking the exit to I-435 West who have to quickly get over 2 lanes of high speed traffic to avoid inadvertently exiting at Lackman Rd or K-10?

Yes.  Improvements in this area will alleviate the need for drivers to have to cross 2 lanes so quickly.

Will there be any improvements seen to the following direction of travel: The congestion resulting from drivers coming from Lackman Rd trying to get onto I-435 East while drivers on I-435 heading south-east are trying to get over as quickly as possible to take the exit for I-35 South?

Yes.  The improvements at this area are among the most significant improvements in the whole project area.

What effort(s) will be taken by KDOT to minimize the amount of congestion and traffic backups resulting from this construction, such as overnight or weekend work?

KDOT is committed to keeping you informed about construction and traffic impacts. The project website: www.jocogateway.com will be the primary location for up-to-date information about the project. Project communication will be shared via traffic alerts, Twitter, Facebook, text messages and electronic project updates. While you will see night and weekend work, this is a very large project and some of that work will be in addition to what will be going on during the day in order to get everything done in 2.5 years.

Will afternoon rush hour drivers coming North on I-35 from Olathe toward Lenexa who use the I-435 West exit ramp to go to 87th Street be impacted by this construction in the evening?

Yes. This ramp is scheduled to be closed for up to 45 days during construction. Closer to the date of the closure, the website will have that information posted and we will be providing that information through traffic alerts, social media updates and text messages. Be sure to sign up on the project website for text messages.

Will morning rush hour drivers coming from Lenexa who use I-435 South to get onto I-35 South to head towards Olathe be impacted by the Lackman Road/435 construction?

The ramp at that location will not be closed, but you will likely see traffic back-ups in that area during construction.

Are the lane closures going to impact drivers using Lackman Road to get onto I-435 or drivers I-435 getting off at Lackman Road or both?

Yes both directions will be impacted at various times throughout the project.

What do the local communities think of the Project?

The local communities were engaged as partners in this Study. They had the opportunity to provide input into all aspects of the Study process. The Study partners asked rigorous questions and requested additional information (e.g. traffic analysis of specific options) to address their comfort level with the proposed concepts.

What can be done quickly to solve some of the congestion issues?

The first phase, the Yellow Project began construction in 2012. The Yellow Project will add auxiliary lanes to I-35 from 119th Street to I-435 in both directions. This will relieve some of the more significant congestion areas which people experience today.

This may increase the time it takes for trucks to get from my business to the highway. How will I be compensated?

There will not be any compensation for any increase in travel time to your business. Planned improvements will reduce congestion and travel times, and improve safety and reliability, which will help businesses in the area.

Why did we do the Study given the state’s financial situation?

It is one of the most important needs in the region and the state. It’s important to plan ahead for any transportation improvement since it takes years for actual construction to occur.

Is this improved Interchange the most important need in Johnson County?

This interchange is one of the busiest in the state of Kansas and very important to the economic vitality of the region. It is a huge priority for Kansas and the local communities. This interchange system is a critical link for the metropolitan area and the state, as several important trade routes pass through this interchange. If improvements are not made soon, traffic delays and unreliable travel will hurt the economic vitality of the surrounding communities. Given the interchange’s importance to the region and the state, this Study was one of two Preliminary Engineering (PE) Only Projects in Johnson County and one of three in the KC Metro Area.

Instead of adding additional lanes, why don’t you add more transit routes?

Even with multiple transit strategies employed, traffic models suggest it is unlikely we will be able to shift enough people from single-occupancy cars to buses to solve the congestion problem. Thus, improvements to existing routes will still be required. No one strategy by itself will solve the congestion problems we anticipate. A range of strategies is needed. This will likely include some combination of additional capacity (e.g., HOT lanes, managed lanes), mode shift (e.g., carpools, transit), travel demand management (e.g., staggering work hours, ramp metering, coordinating land use planning with transportation on a regional scale), and other appropriate traffic management solutions. Johnson County Transit has implemented Bus on Shoulder use during peak travel on I-35 to increase transit opportunities along the I-35 corridor.

How will access changes impact Emergency Management Services?

All of the improvement options will enhance EMS access into and through the interchange.

How much will these improvements cost and how long could it take?

Total improvement costs are estimated to be $600 million (2016 dollars). Projects will have to be phased in over time. Pending future programming decisions, design, right of way, and utility relocations, it could take 20 years to complete the entire interchange improvements.

Traffic is bad now, when will improvements be completed?

The study recommendations were completed in 2010. The study identified ways to improve traffic flow. Phase 1 (the Yellow Project) began in 2012 and added auxiliary lanes from I-35 from 119th Street to I-435 in both directions. Phase 2, scheduled to begin in 2014, will address the majority of the existing issues in the area. The completion of Phase 3 will be dependent on funding.

How will these improvements affect my commute?

The proposed improvements are designed to enhance safety and reduce congestion through the I-435/I-35/K-10 interchange area. By adding new lanes and using collector-distributor roads to reduce the weaving of ramp traffic with mainline traffic, the driver experience through the area will be safer and more efficient.

Why are improvements needed?

The Johnson County Gateway: I-435/I-35/K-10 Interchange is one of the most congested interchanges in the state. Accident rates are above the statewide average and the existing pavement needs to be replaced. Continued economic development in the region depends on a safe and efficient Gateway Interchange. Improvements will reduce congestion and improve safety in the area.

Who were the Study partners?

Since the interchange area is multi-jurisdictional, KDOT engaged the cities of Olathe, Lenexa and Overland Park, Johnson County, the Mid-America Regional Council and the Federal Highway Administration as Study partners.

What happend after the Study

The Concept Study developed recommendations for future improvements to the interchange. Phase 1 (the Yellow Project) will be completed in late 2012. Phase 2 is scheduled to begin in 2014. The completion of Phase 3 is dependent on funding.

Were there opportunities for public input?

Yes. KDOT is committed to engaging the public to learn what types of transportation investments are important. For the Johnson County Gateway project there were two public meetings, electronic outreach including a website with a blog, online surveys, focus groups, community presentations, media relations, public official’s briefings, advisory group meetings, and two issues workshops.

How long did the Study take to complete

The study was completed in about 30 months and had three phases: Phase 1 – evaluate existing and future conditions; Phase 2 – determine feasible alternatives and select a preferred improvement concept, and Phase 3 – develop a phasing plan which prioritizes improvements over time.


What was the Study area?

The study area was defined as I-435 from Quiviria Road to 87th Street, I-35 from 95th Street to 119th Street and K-10 from Woodland to I-435. A half-mile area adjacent to the highway on either side will be evaluated for potential impacts.


Why was the Study conducted?

KDOT recognized the need to study this area based on traffic and congestion in the area as well as the age of the pavement. The I-435/I-35/K-10 Interchange area was also identified as a priority need by the local communities to improve safety and mobility through this area.

Will there be more or less opportunity to incorporate bridge aesthetics with design-build

KDOT will work with local partners to strike a balance between visually pleasing improvements and fiscally responsible and maintainable improvements.

How are transit and multimodal solutions being incorporated into the Gateway improvements?

All current plans take into consideration multimodal transportation solutions and do not preclude future use of transit, bus on shoulders, additional shoulder use, managed lanes or high occupancy transportation (HOT) lanes, ramp metering, etc. Additionally, all current plans allow for future bike and pedestrian access for crossings on the local street network so the highway is viewed as less of a barrier for transportation. Additional transit routes do not fully address the capacity needs of the interchange area. In other words, adding additional buses alone will not reduce congestion enough.

How is KDOT using the input received from the public and stakeholders?

KDOT has conducted a series of focus groups, workshops and online surveys to gather input from stakeholders and the public on project priorities and traffic impacts during construction. We also worked with our Advisory Group and local communities to discuss input and issues over the past several years, beginning with the Concept Study. The input gathered from these activities will influence requirements in the Request for Proposals (RFP), such as Maintenance of Traffic. For example, the input received helped establish a framework for levels of tolerance for the traveling public that will help put parameters on how long portions of the roadway network can be closed. We understand there will be inconveniences during construction and the input received will help KDOT communicate more effectively and efficiently with the traveling public and its stakeholders.

What are the approximate pavement quantities that have been estimated for the Project?

1.27M square yards for the entire Project. This includes the yet-to-be-determined Blue Phase.

How much detailed guidance will be provided in terms of driving surfaces?

KDOT will provide designs for both rigid and flexible pavement sections. The Design-Builder may use those sections or propose Alternative Technical Concepts (ATCs) for pavement sections.

How much detailed guidance will be provided in the structural section

Broad guidance will be provided.

Are there DBE goals on this Project?

Yes, 10% of the RFP amount. There is also a trainee goal of 10,000 hours.

What determines if the I-35 and 95th Street Interchange is added to the Project?

KDOT and the City of Lenexa have agreed to include this project as part of the Phase 2 Project.

Will the aesthetics on this job be required to match the aesthetic theme to the east of the Project?

Aesthetic requirements have not yet been determined.

What design criteria will be used on this Project?

In general, KDOT design criteria will be used on the Project.

Will tolling be a part of this Project?

Tolling is not a part of this Project.

What is the “advance mine remediation” Project?

There are existing undermined areas near K-10 and Renner Boulevard and the advance mine remediation project will stabilize voids with rock material beneath the proposed roadway improvements. This work will occur in 2013, in advance of selecting a design-build team.

Will the K-10 and Ridgeview Road Interchange be included in the Phase 2 Project?

Yes. KDOT and the cities of Olathe and Lenexa have agreed to include this project as part of the Phase 2 Project.

Are there any plans to improve College Boulevard to help with increased traffic during construction?

Yes. KDOT and the cities of Lenexa and Olathe have agreed to include improvements to College Boulevard between Renner Boulevard and Ridgeview Road as part of the Phase 2 Project.

Will any local Interchanges be closed during construction

It will be necessary to close some interchanges during construction. However, it is unlikely that two adjacent interchanges will be closed at the same time.

When is construction expected to begin for Phase 2?

Construction is anticipated to start by Summer 2014.

What improvements are currently under construction?

Phase 2 construction has started.  You can review the general construction schedule here.  To stay informed about current traffic impacts during construction check the traffic alerts page.

Will a Conditional Letter of Map Revision (CLOMR) or a Section 404 Permit be required on this Project?

Yes, because of impacts to existing detention areas and streams. These agency approvals are being coordinated as part of preliminary engineering.

Will Subsurface Utility Engineering (S.U.E.) be performed as part of this Project?

Yes, this work is currently underway with preliminary engineering.

What are the right of way needs for this Project?

The right of way footprint is currently being established as part of preliminary engineering.

What is the design-build contracting process?

KDOT will use a fixed price/best design procurement strategy for this Project.

What is the Project budget?

The final budget for the Gateway RFP will be $285 million. The Design-Build teams are competing to provide the best project for that $285 million fixed budget. The final budget now includes the T-WORKS construction funding of $250 million, additional funding from local participants and funding for design and engineering work. KDOT is confident that we will receive a great project for the budget.

What is the design-build schedule

Design-Build Schedule

What is the scope of the Johnson County Gateway Design-Build Project?

The Project will address the primary areas of concern identified in the Concept Study, and will deliver the highest value improvements possible within the T-WORKS budget. The following will be included in the planning:

  • Right of way acquisition
  • Utility relocation
  • Permitting
  • Undermined remediation


Preliminary Concept Map:

Detailed Preliminary Map