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Title
Change Order/Amendment No. 7 in the net amount of $80,329.45 with Tiseo Paving Company for Great Southwest Parkway Improvements
Presenter
Romin Khavari, City Engineer; Walter Shumac, Director of Transportation, and Gabriel Johnson, Director of Public Works
Recommended Action
Approve
Analysis
On December 12, 2017 the City of Grand Prairie approved a Construction Contract with Tiseo Paving Company in the total negotiated amount of $12,688,471.60 for Great Southwest Parkway from Sara Jane Parkway to Mayfield Road; materials testing with Alliance Geotechnical Group in the amount of $159,504; 5% contingency in the amount of $634,424; In-house engineering in the amount of $317,212; street lighting allowance of $52,000; signal/fiber allowance of $200,000; additional traffic control allowance by Grand Prairie Police Department $104,000; for a total project cost of $14,155,612
This project provides for the construction of approximately 4,900 L.F of 6 concrete lanes divided roadway (89- foot wide) with utilities from IH 20 to Mayfield Road.
The current proposed Change Order/Amendment #7 in the total net amount of $80,329.45 provides for the following:
During construction, additional paving needed to be removed at the driveway replacements due to gutter line issues, existing pavement joints, and poor condition of existing pavement at tie-in location. The cost associated with this additional work is $18,905.90.
During construction, a called out existing 8” line was discovered to be a 12” water line. The cost associated with this additional work is $3,150.
Field quantities differed from the quantities estimated for bidding purposes. An additional 11 vertical feet of 5’ manhole depth, relocation of blow-off valve, and 3 additional manhole removals. The cost associated with this additional work is $12,102.30.
Due to conflicts that were found in the field with existing utilities, temporary overhead signal wiring will need to be installed at Fo...
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