Counties Impacted
Jackson
Route Impacted
70
Work Type
Environmental Assessment
Planning Phase

I-70 Environmental Assessment: I-435 to I-470

MoDOT's Kansas City District, in coordination with the Federal Highway Administration (FHWA), will evaluate improvement alternatives and complete an Environmental Assessment (EA) for Interstate 70 (I-70) between Manchester Trafficway/Interstate 435 and Interstate 470, also known as I-70: I-435 to I-470.

Since its original construction more than 50 years ago, I-70 has been a vital lifeline for moving people, goods and information across Missouri and beyond. This project is one of several which will modernize the I-70 corridor across the state.

The Environmental Process for this portion of I-70 will begin in the Fall of 2024.  Initial steps include efforts to understand the traffic volumes and safety conditions throughout the corridor. More information will be posted as the project kicks off.

Project Goals

Based on previous studies, MoDOT will identify improvement alternatives that will:
  • Improve safety
  • Reduce congestion
  • Improve accessibility and goods movement
  • Restore and maintain existing infrastructure
Through additional studies, MoDOT will:
  • Validate and update the purpose and need for improvements in this corridor as part of the Environmental Assessment.
  • Recommend improvement alternatives by December 2025.
  • Engage the community and stakeholders to inform the process throughout the project.
  • Submit the Environmental Assessment for necessary approvals.

Map of I-70 EA: I-435 to I-470

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Community Engagement

Thank you for your interest in this project. You will find a full timeline for this project below. 

MoDOT is improving aging infrastructure along I-70 between Manchester Trafficway/ I-435 and I-470.

In this phase, MoDOT is conducting an Environmental Assessment.

In the coming months, the project team will hold public meetings on this project to hear community feedback and review current concerns, ways to improve safety, reduce congestion, and reconnect the community.

What is an Environmental Assessment?

An Environmental Assessment (EA) is a federally required document under the National Environmental Policy Act of 1969 (NEPA) to evaluate potential impacts to the natural and manmade environment. EAs are done to help agencies, elected officials and the public make sound decisions on proposed improvements. There are several steps for EA’s and the public has opportunities for input along the way.

During the current environmental study phase of work, these are the primary goals:
  • Identify existing conditions.
  • Validate and review the purpose and need for the proposed improvements.
  • Evaluate potential impacts of the preferred alternatives.
  • Engage with stakeholders to provide project feedback.

 

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Need more information?

We're here to help. If you need additional information, you can contact us at i70_ea_i435_i470@modot.mo.gov.

 

Timeline

In Progress
Preliminary Traffic Analysis and Data Collection
Fall 2023 (August/September)
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Not Started
Begin Environmental Assessment (NEPA Initiation)
Fall 2024
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Not Started
Draft Purpose and Need Submittal
Fall 2024
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Not Started
Community Engagement
Begins Summer 2024 through Summer 2025

(Includes community presentations, advisory committee meetings and elected officials’ briefings) 

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Not Started
Public Meeting - Range of Alternatives
Winter 2025
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Not Started
Public Survey #1
Winter 2025
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Not Started
Preferred Alternative Selected
Summer 2025
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Not Started
Public Hearing
Summer 2025
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Not Started
Public Survey #2
Summer 2025
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Not Started
EA Documents Available for Public Review
Summer 2025
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Not Started
EA NEPA Decision - Submitted to FHWA
Fall 2025
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Not Started
Final Design and Engineering
2026-2027
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Not Started
Construction Anticipated
2028
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