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Great Western Corridor Feasibility Study. Yavapai County Board of Supervisors April 5, 2010. Central Yavapai Metropolitan Planning Organization (CYMPO)

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great western corridor feasibility study

Great Western CorridorFeasibility Study

Yavapai County Board of Supervisors

April 5, 2010

project history
Central Yavapai Metropolitan Planning Organization (CYMPO)

Based on previous studies dating back to 1995 and the 2006 CYMPO study, a need for a new high capacity access controlled roadway was identified to meet year 2030 traffic demands.

Arizona Department of Transportation (ADOT)

Transportation Investment Strategy identified the need for Great Western/Glassford Hill Corridor to meet future traffic demands.

Yavapai County

Taking the lead to further study the Great Western Corridor for a future controlled access roadway.

Project History
project schedule
Oct 2008 – Study initiated

Feb 2009 – Agency Scoping Meeting and Public Open House

July 2009 – Public Information Open House to present alternatives

Sept 2009 – Preferred Corridor Alignment selected

March 2010 – Feasibility Study, 15% Plans, and Environmental Overview complete

Project Schedule
regional map
Regional Map

Great Western Study Corridor

project location
Project Location

Granite Dells Pkwy

Willow Creek

Glassford Hill Rd

project overview
Need for a regional system as identified by CYMPO, Yavapai County, and ADOT

Continual coordination with agencies, community, and stakeholders

Define the future controlled access roadway needed to efficiently move regional traffic

Evaluate the environmental impacts of the preferred roadway corridor

Prepare Feasibility Study and 15% design plans to identify future right-of-way requirements

No construction funding

Project Overview
  • Yavapai County Public Works
  • ADOT Prescott District
  • ADOT Roadway
  • ADOT PreDesign
  • ADOT Environmental
  • FHWA
  • City of Prescott
  • Town of Prescott Valley
  • Town of Chino Valley
  • AZ Game & Fish Department
  • AZ Fish & Wildlife
  • Arizona State Land Department
  • Granite Dells Estates (Fann)
  • Granite Dells Ranch (Cavan)
  • Deep Well Ranch (James)
  • Cortez Enterprises
2030 projected traffic volumes
2030 Projected Traffic Volumes

Future Traffic







Alternative Alignments

Outer Loop Rd

Road 5 South

evaluation categories

Alternative Evaluation Matrix

Evaluation Categories

- Economic Development- Engineering Considerations

- Construction & Maintenance Costs

- Transportation Systems

- Environmental Considerations

alignment features

Preferred Alternative

Alignment Features

- 2nd shortest alignment- Minimal utility conflicts- Least potential fragmentation of pronghorn antelope habitat- Furthest alignment from existing residential

preferred corridor alignment
Preferred Corridor Alignment


Chino Valley


Road 5 South


Outer Loop


& SR 89


Great Western Extension

Granite Dells Pkwy

Glassford Hill Rd

Future SR 89A System Interchange

recommended phasing
Recommended Phasing

Phase 1

- Great Western local diamond

interchange on SR 89A

- Limited access road

- 1st interchange (by developers)


Chino Valley

Extension & System


Road 5 South


Outer Loop Rd Extension &

SR 89


Phase 2

- 1st segment of Great Western

Extension (4 lanes)

- 2nd interchange (by developers)

- Great Western on/off ramps

Phase 3

- Remaining segment of Great

Western Extension

- Granite Creek Bridge

- At-grade intersection at SR 89

Great Western

Phase 4

- 3rd interchange (by developers)

Phase 5

- Future SR 89A Interchange

(configuration TBD)

Granite Dells

Glassford Hill

final study products
Final Study Products
  • Existing Drainage Report
  • Technical Memo re: Granite Creek Crossing Analysis
  • Traffic Report
  • Feasibility Study
  • Environmental Overview
  • 15% Design Plans
questions and comments and Comments

Thank you!

For more information please visit the Yavapai County Web site: