Title
Professional Services Supplemental Agreement # 8 with Halff Associates, Inc. in the amount of $98,385 for Construction Phase associated with TR2101 - Picadilly Drive, Royston Lane, and Central Commerce Drive.
Summary
Approval of a Professional Services Supplemental Agreement (PSSA) with Halff Associates, Inc. in the amount of $98,385 for Construction Phase associated with TR2101 - Picadilly Drive, Royston Lane, and Central Commerce Drive to provide additional construction phase services including additional construction administration and project management services from June 2026 through the completion of construction (September 2027). The scope also includes preparation and review of additional Requests for Information, associated design revisions, construction-phase coordination, and other professional services necessary to support completion of the project.
The original Professional Services Agreement and previously approved supplemental agreements included design, utility coordination, bidding, permitting, project management, and construction-phase services. As construction has progressed, additional professional services have been required to support project delivery, respond to field conditions, address contractor requests for information, and meet City and regulatory agency requirements.
Approval of this Supplemental Agreement will provide continued engineering support throughout the remaining construction period, maintain compliance with applicable regulatory and City requirements, and support the successful completion and closeout of the project.
This item is supported by the Mobility Infrastructure and Connectivity pillar of the Strategic Plan.
Prior City Council Action
Professional Services Agreement, executed July 7, 2021, in the amount of $63,176.80 for the 2019 Pflugerville Transportation Bond Project.
Supplemental Agreement No. 1, executed June 23, 2023, in the amount of $12,310 for additional utility coordination services.
Supplemental Agreement No. 2, executed April 17, 2024, in the amount of $133,872.90 for Competitive Sealed Proposal bidding services, additional utility coordination, technical review, design services for pedestrian, bicycle, and shared-use-path facilities.
Supplemental Agreement No. 3, executed December 4, 2024, in the amount of $43,328 for additional bidding, design, permitting, and geotechnical services.
Supplemental Agreement No. 4, executed June 10, 2025, in the amount of $42,824 for additional construction administration, utility coordination, construction document updates, and permitting services.
Supplemental Agreement No. 5, executed July 8, 2025, for electrical design & an environmental study associated with lighting improvements on Picadilly Drive under the TxDOT Highway Safety Improvement Program funded from a separate project budget item.
Supplemental Agreement No. 6, executed December 3, 2025, in the amount of $37,771 for additional construction-phase services and project management.
Supplemental Agreement No. 7, executed January 27, 2026, in the amount of $47,320 for additional construction-phase services and project management from November 7, 2025, through June 6, 2026.
Deadline for City Council Action
July 28, 2026
Funding Expected: Revenue __ Expenditure _X_ N/A __
Budgeted Item: Yes _X_ No __ N/A __
Budget Source: ___2020 GO Bond_________
Budgeted Amount: __$1,445,592______
Amount: _$98,385___
1295 Form Required? Yes __ No X_
Legal Review Required: N/A __ Required _X_ Date Completed: ___July 16, 2026________
Supporting documents attached:
Professional Service Supplemental Agreement 8 - Halff
Recommended Action
Approve a Professional Services Supplemental Agreement # 8 with Halff Associates, Inc. in the amount of $98,385 for Construction Phase associated with TR2101 - Picadilly Drive, Royston Lane, and Central Commerce Drive, and authorize the City Manager to execute same.