Completed Improve I-70 Studies

Overview

I-70 has immediate needs that must be met. In doing so, MoDOT must ensure that dollars spent today are not wasted tomorrow. To accomplish that goal, MoDOT launched “Improve I-70.”

Improve I-70 is an umbrella term used to describe a group of past and current studies of I-70 between Independence and St. Louis. Improve I-70 continues the work of the initial I-70 Improvement Study, an Environmental Impact Statement that explored responses to the condition of I-70 and selected the strategy of widening and reconstructing the existing route.

The Second Tier Improve I-70 studies took that strategy to the next level of detail, working with local communities to determine the location and basic configuration of I-70 improvements. This effort resulted in both a long-term vision and a short term plan for I-70, ensuring that improvements made in the coming years are in sync with the ultimate facility.

The Improve I-70 SEIS is a further continuation of that work, comparing the impacts, costs and benefits determined in the Improve I-70 studies with the impacts, costs and benefits of rebuilding the highway with truck only lanes.

Currently, no funding is allocated for the design or construction of any major I-70 improvements. Without an increase in funding, long-term improvements to I-70 may never be affordable to Missouri and tough decisions will need to be made regarding what can be done with the funding available.

But the lack of funding does not eliminate the need for sound planning. Completion of the Improve I-70 studies helped ensure that all decisions about I-70 improvements are made in an open, collaborative way while balancing environmental issues and community concerns. Study results also will help MoDOT, local communities, and potentially affected businesses and property owners prepare for the future.

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Freight Rail Plan 21 Resident Card Graphic

The Process

The first step…The process of improving I-70 began in 1999, when MoDOT conducted a feasibility study to document the condition of the highway and to identify a number of alternatives in response.

Explore the Process
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Aerial View of New Design at I-435 and I-70

The Project

Improve I-70 Second Tier studies included seven closely coordinated but independent studies. These seven studies analyzed the potential impacts of widening and reconstructing the interstate in seven distinct geographic areas. 

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I-70 Auxvasse West

The Facts

I-70 is more than a frequently traveled local highway. It's also a critical state and regional corridor and a nationally important interstate. Improve I-70 efforts will help MoDOT ensure that the interstate continues to serve...

See the Facts
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Improve I-70 Logo Card

Publications

This page includes links to various corridor-wide publications produced for Improve I-70. Here you’ll find links to materials as they’re produced, including newsletters, brochures, fact sheets, etc.

Browse the Publications