Commissioners Court - Regular Session

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15.

Meeting Date:	11/09/2010
Submitted By:	Tiffany Mcconnell, Road Bond
Department:	Road Bond

Agenda Item

Consider approving Change Order Number 12 in the amount of $47,643.52 for US 79, Section 5B, a Pass Through Project in Precinct 4.

Background

This change order is comprised of three separate items of work.

(1) Ditches and ditch slopes at various drainage culverts were being prematurely eroded due to rainwater runoff. The plans did not account for protection of all of these locations as needed. Therefore, concrete riprap was added to prevent erosion at these locations.

(2) In coordination with Williamson County, TxDOT decided to change the final asphalt driving surface from a Stone-Matrix Asphalt (SMA) design to a Permeable Friction Course (PFC) design. Due to the high permeability of the PFC pavement, drainage slots needed to be cut into the previously placed concrete mow strips under the guardrail which was adjacent to the pavement in order for the pavement to drain properly. This change order provides payment to the contractor to come back and cut these drainage slots into the concrete mow strips.

(3) The plans called for a ditch to be cut on the Union Pacific Railroad (UPRR) Right-of-Way (ROW) between Culverts #4 and #5. However, the plans did not include ditch excavation quantities for this work. This change order provides payment to the contractor to perform this work.

Fiscal Impact

From/To	Acct No.	Description	Amount

Attachments
US 79 Section 5B CO 12
US 70 Section 5 B Change Order 12

Form Review

Inbox	Reviewed By	Date
County Judge Exec Asst.	Wendy Coco	11/04/2010 08:35 AM
Form Started By: kzaleski		Started On: 11/04/2010 08:26 AM
Final Approval Date: 11/04/2010