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Boone County Archives

Ashland Boone YM

Project Description

Roadwork on Route 63 and the Y/M Interchange in Ashland has been completed. This was a large project encompassing multiple improvements, including:


  • Bridge deck and structure repairs on the Route M and Y overpass, and a new driving surface
  • Adding a J-turn on Route 63 just south of Peterson Lane, which will replace the existing median crossovers at Liberty Lane and Peterson Lane
  • Installing roundabouts on Routes M and Y at the Route 63 overpass
  • Pavement repairs throughout the Route 63 corridor between Route WW in Columbia and U.S. 54 in Callaway County
  • A new overlay with shoulder sealing from Route WW to U.S. 54 in Callaway County

Project Description

Contractor: APAC - Missouri
Contract Cost: $8,481,805.37
Project Length: 26.9 miles 


FAQ Boone63YM

Boone County Route 63 and YM Interchange FAQ

project overview

Construction Map

Route B Bridge Rehab

Route B Bridge Replacement

The Missouri Department of Transportation constructed a bridge on Route B over Business Loop 70 in Columbia. This project was a cooperative effort between MoDOT and the City of Columbia. Materials presented at the public meeting on March 3 are located below:


Route B Welcome Letter

Welcome Letter

FAQ Route B Columbia

Frequently Asked Questions

Route B Detour Handout

Route B Detour Handout

Bus Loop 70 Detour

Business Loop Detour



Route 63 Hinton J-turn


Route 63 Intersection Improvements

MoDOT has completed intersection improvements along Route 63 in Boone County. The project involved the construction of J-Turns, offset left turns, acceleration and deceleration lanes at the intersection of Route 63 and Hinton Road/Calvert Hill Road, north of Columbia. Materials presented at the public meeting are located below:



Route 740 logo

Traffic Flowing Smoothly on Central Missouri's First Diverging Diamond Interchange

Central Missouri’s first diverging diamond interchange opened to traffic on Oct. 13, 2013 at Route 740 (Stadium Boulevard) and Interstate 70 in Columbia. Take advantage of the information below to learn how it works.

Take a Virtual Drive Through Mid-Missouri's First Diverging Diamond Interchange

To help motorists better understand how the new interchange works, the City of Columbia created a video that takes travelers on a virtual driving tour of the interchange.  Click on the video to learn more! 


Other helpful videos:

How the Route 740 Diverging Diamond Interchange Works

Video:  What Does A Diverging Diamond Interchange Look Like?

Other informational materials related to the project:


Route 740 aerial map

Aerial Map

Route 740 construction schedule

Construction Schedule



Frequently Asked Questions

strip map

Strip Map

Route 740 DDI map

Diverging Diamond Interchange Map

What is a Diverging Diamond Interchange?

What is a Diverging Diamond Interchange? (pdf, 389 KB)


How to drive a diverging diamond interchange

How to Drive a Diverging Diamond

Interchange (pdf, 112 KB)




Click here to view previous Route 740 project materials presented at a public meeting held May 24, 2011

Route Z Road and Bridge Improvements

The Missouri Department of Transportation completed of road and bridge improvements along Route Z at Interstate 70. The work is designed to improve safety and accommodate an expected increase in traffic associated with the new Battle High School.


*NEW* Route Z Bridge Opens July 19

Route Z Improvements to Begin April 2 (News Release, March 27, 2013)

Meeting Set to Discuss Route Z Road and Bridge Projects (News Release, Nov. 2, 2012)

Route Z Online Public Hearing, Nov. 14 - Nov. 24


Welcome letter

Welcome Letter

Community briefing

Frequently Asked Questions

location sketch

Project location sketch

Route Z improvements

Route Z Improvements

Typical sections

Route Z Typical Sections

Route Z north detour

Route Z North Detour

Route Z bridge improvements

Bridge Improvements

Bridge typical selection

Typical Section on Bridge

Route Z south detour

Route Z South Detour


U.S. 63 and Route H Interchange

The Missouri Department of Transportation constructed a diamond interchange at U.S. 63 and Route H near the Columbia Regional Airport in Boone County. The project also included constructing new southbound lanes from just north of Route 163 to Route H in Columbia. An outer roadway would be created using the current southbound lanes. This would allow for the removal of several crossovers to improve safety.

Route 63 and H Interchange Project Nearing Completion

Route 163 Crossover Closed (April 18, 2012)

New Interchange Bridge at U.S. 63 and Route H Takes Shape  (News Release, Feb. 28,. 2012)

Route H Detour Changes for Interchange Construction at U.S. 63 (News Release, Oct. 12, 2011)

Roadway Closures Planned for Interchange Construction at U.S. 63 and Route H (News Release, Aug. 19, 2011)

Route H to Close on Aug. 22 at U.S. 63 in Boone County for Interchange Construction (News Release, Aug. 10, 2011)

East Columbia Environmental Impact Statement


East Columbia Final EIS

East Columbia Final Environmental Impact Statement

December 2009



The Final Environmental Impact Statement is an environmental study designed to identify East Columbia's current and future transportation needs and to assess how best to meet those needs while minimizing impacts to the surrounding community and environment.

Click here for locations where you can review a paper copy of the Final Environmental Impact Statement.

This document is provided in Acrobat Reader format. Free Acrobat Reader download PDF Icon


Cover and Signature Page (289 KB)

Notice (88 KB)

Table of Contents (40 KB)

Summary (202 KB)

Chapter I: Purpose and Need (389 KB)

Chapter II: Alternatives (356 KB)

Chapter III: Affected Environment (75 KB)

Chapter IV: Environmental Consequences (566 KB)

Chapter V: Comments and Coordination (761 KB)

Chapter VI: DEIS Distribution List (37 KB)

Index (24 KB)

Appendices A through E (465 KB)

(Safety & Accident Data, List of Preparers, Partnering Agreement,

Public Involvement Plan, Public Information Meeting Summaries)

Appendix F: Notice of Availability (771 KB)

Appendix G: Property Owner's Guide (446 KB)

Appendix H: Agency Correspondence (925 KB)

Appendix I: Partner Concurrence (1.21 MB)

Entire East Columbia Final EIS (large pdf file, 17.95 MB)

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