To approve an increase to the current awarded contract amount of $13,797,878 by $2,574,817, for a total contract amount of $16,372,694, for Shiloh Road Expansion - Park Boulevard to 14th Street, Project No. 7036, from Texas Sterling Construction Co. for the Engineering Department; and authorizing the City Manager to execute all necessary documents. (Contract No. 2022-0241-B; Change Order No. 2) Approved

On March 15, 2022, City Council awarded a bid in the amount of $13,797,878 for Shiloh Road Expansion - Park Boulevard to 14th Street, Project No. 7036 to Texas Sterling Construction Co.

The Engineering Department recommends approval of Change Order No. 2 for the increase of the construction contract with Texas Sterling Construction Co., in the amount of $2,574,817, for the Shiloh Road Expansion - Park Boulevard to 14th Street project. The original contract amount is $13,797,877.60 and the amount of the current request is $2,574,816.69 for a total amount of $16,372,694.29.

Change Order No. 1 was executed on October 20, 2022 to amend the scope of services. Change Order No. 1 was a no cost change order.

Change Order No. 2 includes additional removal and replacement of existing roadway pavement, sidewalk, barrier free ramps and additional survey for existing pavement replacement on the existing southbound Shiloh Road lanes. After construction began, additional areas of deteriorating pavement were discovered, and after further exploration, staff verified inadequate thickness and reinforcement of existing pavement was prevalent in multiple locations, thus requiring additional pavement removal/replacement. The existing sidewalk along the southbound lanes was also found to have many locations with deteriorating pavement and areas that were non-compliant with current ADA criteria. The decision was made to remove and replace the majority of the sidewalk and ramps along the existing southbound lanes. The project's unit costs for concrete pavement removal and replacement were below current average bid unit costs making the additional pavement and sidewalk replacement economically beneficial for the City.

In addition, Change Order No. 2 includes necessary intersection capacity improvements at Shiloh Road and 14th Street to add in new street pavement for turn lanes and signal modifications.  These items include new turn lanes in the westbound direction, traffic signal foundations, conduits, and cable, and adjusted storm drain pipes inlets to account for the new capacity improvements.

There are also various additional quantities added to bid items that were necessary due to unforeseen conflicts and existing field conditions after construction began. There were various revisions and additions to storm drain, metal beam guard fence, retaining walls, bridge slab and rails, sanitary sewer manholes, and water lines.

Finally, additional days and costs are part of Change Order No. 2 for the Frontier delay due to a conflict with the Frontier fiber optic duct bank at the creek crossing and the upstream side of the proposed bridge.  The costs for this delay include the contractor’s supervision costs for the additional days (90 calendar days), additional contractor labor, and equipment to work around the utility conflict to install the proposed southbound bridge. The Frontier conflict also delayed the streambank stabilization work required upstream of the new bridge.

If this change order is not approved, the existing pavement would continue to deteriorate and fail increasing maintenance costs and impacting traffic flow through this corridor. Existing sidewalks would continue to deteriorate and fail to meet ADA criteria, creating a hazard for pedestrians, and finally, increased traffic congestion would continue at the Shiloh Road and 14th Street intersection. Not approving the necessary field condition revisions would impair the use of other necessary systems along the corridor, including storm drain systems, water lines, and sanitary sewer systems. Not approving this change order would negatively impact the residents quality of life, traffic flow, and use of necessary public infrastructure.

Funding for this item is available in the 2023-24 Street Improvements CIP.  The second change order for the Shiloh Road Expansion - Park Boulevard to 14th Street project, in the total estimated amount of $2,574,817 will leave a balance of $36,650 for future expenditures.

Approval of this item will support the City's Strategic Plan Critical Success Factor of being an Excellent, Innovative, and Accountable City Government.