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Title
Change Order/Amendment No. 9 in the net amount of $150,000 with Austin Bridge and Road, L.P. for MacArthur Paving and Drainage Improvements
Presenter
Romin Khavari, City Engineer
Recommended Action
Approve
Analysis
On April 21, 2015 the City of Grand Prairie (15-4571) awarded a construction contract to Austin Bridge and Road, L.P in the bid amount of $14,707,420.34 and a total project cost of $16,205,025 for MacArthur Blvd Paving and Drainage improvements between IH 30 and West fork of the Trinity River inside Irving City limits.
This project provided for the construction of 4,743 linear feet of 4-lane divided thoroughfare in MacArthur Blvd from IH-30 to north of the West fork of Trinity River to connect to the existing concrete roadway. The project also included the construction of Two-700 linear feet bridges over the Trinity River; 555 linear feet of 37’- wide new concrete roadway to the Land fill Road; construction of approximately 1400 linear feet of bypass channel across the existing Trinity River ox-bow to the west of MacArthur Blvd. to improve channel hydraulics and mitigate for the approximate 4 feet embankment fill required for the roadway.
On a Separate CIP approved project, The City has hired Halff Associates to remove the existing undersized storm drain culverts under Tarrant Road at Arbor Creek and replace them with larger culverts in order to adequately convey the flows in Arbor Creek during higher intensity rainfall events. As a result of these larger culverts, the road elevation will need to be raised approximately 5 to 6 feet, which necessitates the need for imported fill material. Meanwhile, the MacArthur project has a surplus of spoil material of good quality which is suitable for fill material,. In order to save significant costs on the Tarrant Road culvert project, the City is proposing to haul the excess spoils from the MacArthur project to a site adjacent to the Tarrant Road project and stockpile it for use on ...
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