Pima Road Improvements: Pinnacle Peak Road to Happy Valley Road


Project Information

The project will widen Pima Road to three through lanes in each direction with a landscaped median, bike lanes, sidewalk and drainage improvements from 500-feet north of Pinnacle Peak Road to north of Happy Valley Road. The purpose of the improvements is to improve capacity and operational efficiency.

The widening of this segment of Pima Road is part of Scottsdale’s Transportation Master Plan. Funding for the project is currently part of the 5-year Capital Improvement Plan. The project budget is $19.5 million and is funded by the Regional Sales Tax (Arterial Life Cycle Program) and Scottsdale’s Transportation 0.2% Sales Tax.

Community Outreach

Public Meeting #3 - July (online)

The third project open house was held virtually on this page in July 2020. The following materials were presented at the meeting:

Presentation video

Pima Road Typical Section  (PDF)

Pima Road Conceptual Rendering  (PDF)

Pima Road and Happy Valley Road Intersection & Basin Rendering  (PDF)

Sound Wall Rendering  (PDF)

Plant Palette  (PDF)

Pima Road Drainage Channel  (PDF)

Pima Road and Happy Valley Road Intersection Drainage  (PDF)

Roll Plot  (PDF)

Roll Plot Landscaping  (PDF)

Public Meeting #2 - May 9, 2019

The second project open house was held in May 2019. The following materials were presented at the meeting:

Hydraulics  (PDF)

Plant Palette  (PDF)

Plan View  (PDF)

Roll Plot  (PDF)

Roll Plot Landscaping  (PDF)

Schedule  (PDF)

Section View  (PDF)

Sound Wall Concepts  (PDF)

Public Meeting #1 - October 2018

The first project open house was held in October 2018. The following materials were presented at the meeting:

Project Corridor  (PDF)

Typical Sections  (PDF)

Existing Watershed  (PDF)

Existing Hydraulics  (PDF)

Plant Palette  (PDF)

Concept Plan Views  (PDF)

Tentative Project Schedule

Preliminary Assessment Began January 2016
Preliminary Assessment & Initial Sound Study Complete July 2017
Design contract under consideration by City Council June 12, 2018
Neighborhood Meetings Fall 2018
First Public Meeting October 18, 2018
30 Percent Design Completion Fall 2018
Second Public Meeting/Noise Analysis Results May 9, 2019
60 Percent Completion December 2019
Third Public Meeting - Virtual July 2020
Design Review Board Summer 2020
 Utility Relocation (by private companies)

Spring 2021

Solicitation for Construction Bids Spring 2021
Approximate Construction Start Summer 2021
All dates are tentative unless noted otherwise

Frequently Asked Questions

Pima Road – 38,700 vehicles per day (VPD) (2020), Projected 70,000 VPD (2040)

On Pima Road the speed limit is expected to be revised to 45mph from the currently posted speed which is 50mph

Yes, the current design includes “NO ENGINE BRAKING” signs in the southbound direction.

Yes, a raised landscaped median island will be constructed on Pima Road.

The City has determined that the sidewalk on the west side of Pima Road will be constructed with the project and the multi-use trail on the east side will be deferred until development occurs. The sidewalk and multi-use trail are consistent with the City’s arterial street typical section for this part of the city, so they are not being considered for changes at this point in the project.

A dedicated left turn lane will be constructed for northbound Pima Road traffic to turn left to westbound Chama Road. We are also planning to install a refuge in the median island for eastbound Chama Road traffic to pull out and safely merge onto northbound Pima Road traffic.

The city performed a noise study comparing rubberized and conventional asphalt and determined that there were no noticeable differences in noise abatement. Because rubberized asphalt costs significantly more than conventional asphalt and deteriorates approximately twice as fast, Scottsdale no longer uses it.

For projects that expand the capacity of roadways the City does a full noise analysis of the project limits. Existing noise levels are gathered to calibrate the model and existing and proposed traffic volumes are used to predict the noise levels that will occur after the project is constructed. Once the noise model is prepared, features such as noise walls are inserted into the model to determine how the noise levels can be improved. Typically, the height of the wall is varied until the noise levels are brought down within acceptable levels as dictated by the city’s noise policy.

The City has determined that a sound barrier will need to be constructed from just north of the Citadel plaza to just south of Happy Valley Road along the west side of Pima Road to mitigate noise from the projected future traffic volumes and the new capacity improvements. (Include link to rendering in meeting 3 section if possible)

The height of the wall is determined by the noise study results. In order to provide the benefits based on the receptors from the noise study, it has to be constructed at that height to be a sound barrier. Otherwise, it is just a wall.

Any walls being installed will be installed in public right-of-way, so they will be maintained by the City of Scottsdale.

In some areas, the existing wall may be too close to the sound wall and that will be taken care of through the right-of-way acquisition process. Essentially, the existing wall is a private improvement on private land; if it’s not in the way of the City’s improvements, there would be no reason for the project to incur the added expense of removing the private improvement.

The Pima Road project includes the construction of a regional drainage channel along the east side of the project to direct stormwater runoff that currently crosses Pima Road further to the south in to the into the existing channel constructed with a previous project south of Pinnacle Peak Road. This will help divert the large majority of stormwater runoff that crosses Pima Road today, but it will not eliminate it completely. A certain amount of water from the channel will be diverted to the west side of Pima Road to mimic the existing stormwater patterns but at much lower volumes that what currently exists today.

The channel is currently planned to blend into the natural environment as much as possible. The alignment has a slight meander to it and it will have a sandy bottom similar to the existing washes that are within the project limits.

Construction on Pima Road will take place concurrently with construction on Happy Valley Road, and both projects are tentatively slated to begin in the Summer of 2021.

For Pima Road we have prepared construction phasing plans to limit disruptions to the traveling public. We have also detailed our box culverts proposed for the project to be precast to expedite the widening of the roadway. Construction will take approximately 18-24 months to complete. It should be noted that utility relocations necessary to construct the project may be constructed in advance and that is not included in the time estimate above.

In general, the project will seek to maintain two lanes of traffic in each direction on Pima Road. While no long-term closures are anticipated, short term closures may be necessary, and will be authorized only when it has been determined to be in the best interest of the project.

Yes, these two projects can be constructed separately. However, the city anticipates multiple benefits from combining the projects into one construction contract, including a reduced overall duration for the construction process.

Project Information

Budget: $19.5 million

Sponsoring Division: Transportation

Funding Source: Regional Sales Tax, Transportation 0.2% Sales Tax

Project Location: Pima Road from 500-feet north of Pinnacle Peak Road to north of Happy Valley Road

Contact Information

Project Hotline
(480) 898-4110