Agenda

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Item # 6.

Council Meeting

Meeting Date:	05/16/2022
Department:	Public Works
Pillars:	Excellence in Transportation Systems
Milestones:	Establish an intentional culture throughout the organization that is based on continuous improvement, excellence, and adherence to our core values

AGENDA CAPTION:

Consider Action on Change Order #2 to Jacobs Engineering Group Inc. for the Keller Springs Road and Airport Parkway Design Projects and Authorize the City Manager to Execute the Change Order in an Amount Not to Exceed $135,110.

BACKGROUND:

The purpose of this item is to approve Change Order #2 to the professional engineering services agreement with Jacobs Engineering Group Inc. (Jacobs) for the Keller Springs Road and Airport Parkway Design Projects in the amount of $135,110.

City Council awarded the design for the Keller Springs Road and Airport Parkway projects to Jacobs in December 2019. Change Order #1 was executed by staff in November of 2021 to add 189 additional days to the design contract for unanticipated delays in design and to reduce parking spaces lost during property acquisitions. Complete detail of these changes can be found in the attached Change Order #1.

For Change Order #2, changes outside of Jacobs' scope of work were needed to reduce the costs associated with the Right-of-Way (ROW) acquisition, separation of projects, additional signals and illumination design, and additional irrigation designs. The major changes are summarized below. Complete detail of these changes can be found in the attached Change Order #2.

Right of Way Revisions:
Lessons learned on recent projects led to modifications to the project design to reduce ROW acquisition needs. This included utilizing easements where feasible instead of acquiring ROW and design changes to save parking spaces thereby limiting the damages claimed during the acquisition process.

Separation of Projects:
Jacobs' original contract included bidding both Keller Springs and Airport Parkway as one project. It was determined that bidding these as separate projects would provide the Town with more control over project sequencing and minimize the potential for high bids due to the volatile supply chain.

Landscaping, Aesthetics, and Irrigation Revisions:
As originally proposed, both Keller Springs Road and Airport Parkway were to have the same aesthetic design. During reviews with staff, it was determined that the southern side of Airport Parkway should serve as a demarcation line for the Addison Circle District streetscape. Additionally, the irrigation designs were revised to reduce the town's maintenance costs and create separate systems for different properties.

Additional Signal and an Alternate Illumination design:
A bid alternate has been included in the project to provide streetlights for Keller Springs Road that match Belt Line Road. Modifications to the pedestrian crossing at Keller Springs Road and the Dallas North Tollway will be made to comply with current Americans with Disabilities Act requirements.

The total cost of the items in Change Order #2 is $135,110. Of this total amount, $78,190.37 will be charged to the Keller Springs Road Project, and $56,919.63 will be charged to the Airport Parkway Project. These costs are still within each project’s respective budget.

The Keller Springs Reconstruction Project is anticipated to go out for bid in late summer 2022, with construction starting in fall 2022. The total contract time is 18 months.

The Airport Parkway Reconstruction Project is scheduled to begin construction once major paving operations are complete with the Keller Springs Project. This is currently anticipated to be in early 2024 and complete in the fall of 2025.

RECOMMENDATION:

Administration Recommends Approval.

Attachments
Change Order #2: Keller Springs Road and Airport Parkway Design Projects
Change Order #1: Keller Springs Road and Airport Parkway Design Projects
Jacobs Design Contract