Title
Consider and take action on a resolution authorizing Change Order 5 to the construction contract with G.W. Phillips Concrete Construction, Inc. for Bay Ridge Flood Reduction - Phase 1 (DR2004), in an amount not to exceed $86,779 (Executive Director of Capital Projects)
Background:
Approval of this resolution will authorize Change Order 5 to the construction contract with G.W. Phillips Concrete Construction, Inc. for the Bay Ridge Flood Reduction - Phase 1 (DR2004), in an amount not to exceed $82,529.
This project is the third of four planned projects impacting the Gum Bayou Watershed and Bay Ridge Subdivision. All these projects are designed to help with street ponding and reduce the flooding potential during large rainfall events. This project scope is to raise a section of Bay Ridge Blvd. to avoid sheet flow from SH 96 during a storm event to migrate down into the subdivision.
Summary of Change Orders 1 thru 5 to date of which the first 3 were administratively approved, Change Order 4 as well as Change Orders 1 thru 3 were approved by Council on April 22, 2025, and Change Order 5 is being considered now:
Change Order 1: After design plans were completed, the waterline being altered as part of the project was taken out of service. This line connected the SH 96 crossing to the water plant site at Bayridge Park. Instead of complete removal from the project, the waterline alignment was modified to allow for a looped system in the neighborhood. $39,238 contract increase.
Change Order 2: Covers remobilization and work performed on the old waterline before the alignment was modified. $0 contract increase.
Change Order 3: Due to the age of the existing waterline in the neighborhood and some unforeseen conflicts underground this change order had to be issue. One additional fire hydrant, removal of a large abandoned underground meter vault in the median, a new gate valve to tie in the existing hydrant at the gas station and a new service bore for the gas station were added. $0 contract increase.
Change Order 4: After City Council award of the construction contract, TxDOT required changes to the traffic control plan for the project. This change in design requires temporarily paving the median at the entrance of the neighborhood along Bayridge Drive. As part of the bid, there were no items for the Contractor to cover these changes. Approval of this change order will create the necessary items for billing. The funding for this change order will come from the “Work Change Directive” budget approved with the original construction contract. The new traffic control plan will allow for more efficient traffic movement through the SH 96 intersection during construction which is scheduled to be completed in June. $32,800 contract increase. Change Order 4 was approved by Council on April 22, 2025.
Proposed Change Order 5: This change order is combination of three (3) Work Change Directives (WCD)folded into this proposed Change Order for ease of approvals and payments.
- WCD 5 -There is a need for asphalt transitions from the new concrete paving to the existing asphalt pavement. These transitions were not captured in existing bid items. These two transitions were approved at a cost of $4,250 per for a total of $8,500, which is the minimum call out fee associated with the asphalt sub-contractor. One of these transitions will be credited back as part of WCD 6.
- WCD 6 -As part of construction, there were elevations in the field that do not align with the approved plan set. This error in elevations caused a 1-foot height difference where the new pavement and existing asphalt meet. To correct for this elevation, and ensure proper drainage, the asphalt transition in CO5 needs to be extended 75ft closer to SH96. This change order will provide for demolition of the existing asphalt within that 75ft transition as well as backfill and stabilization to make up the 12” heigh difference before new asphalt is placed. $53,385 contract increase. This option was cheaper and provided less downtime to the contractor to complete.
- WCD 7 -An additional elevation error was discovered on the second, existing, driveway to the gas station at the corner of Bayridge Drive and SH96. The driveway apron should have been designed further back into the parking lot to provide for positive drainage to an existing area inlet. As is stands currently, the construction efforts will cause an 8-12” deep area for water to pond. This change order will provide for removal and replacement of 6 concrete panels within the parking lot to regrade the area to the nearest storm water inlet. $24,894 contract increase.
This project is part of the 2019 GO Bond Drainage Program.
Attachments:
1. Proposed Resolution
2. Exhibit A - Change Order 5 with Support Documents
3. Approved Change Orders 1-4
4. Contract Award Resolution
5. CIP Project Sheet
6. CIP Aerial Map (Modif.)
FUNDING
{X} Funding in the amount of $86,779 is available from GO Bond Prop A 2021 issuance, Fund 5270, with expenses charged to project expense string DR2004-CONSTRUCT-CONSTRUCT-21PROPA.
Staff recommends leaving $6,000 from the original construction contingency budget for minor project costs such as water usage and unforeseen work change directives. The additional $73,748.76 is available from, DR1905 - The Meadows Subdivision Drainage Improvements Phase 1 & 2, unused construction contingency funded by 21PROPA. This project is 92% complete as of September 30th, 2025.
STRATEGIC PLANNING
{X} Addresses Strategic Planning Critical Success Factor #1: Develop and Maintain our Infrastructure