It is recommended that the City Council authorize the execution of Amendment No. 4 in an amount not to exceed $478,620.00 to City Secretary Contract No. 44165, an Engineering Services Agreement with Bridgefarmer & Associates, Inc., for the design of Parker-Henderson Road from Mansfield Highway to Martin Street for a revised contract amount not to exceed $1,083,064.85 (CPN C01419).

The 2008 Capital Improvement Program allocated funds for the reconstruction of Parker-Henderson Road from Mansfield Highway to David Strickland Road with the construction of sidewalks from David Strickland Road to Martin Street. An Engineering Services Agreement, City Secretary No. 44165 with Bridgefarmer & Associates, Inc. was authorized for the design of the project that included full concrete reconstruction of the roadway from Mansfield Highway to Prairie Dog Creek, a new Bridge at Prairie Dog Creek and sidewalks from the new bridge to Martin Street. Project costs to complete this project are estimated to substantially exceed the project funding allocation of $4.7 million. Staff has reevaluated the scope of the project and determined that modifications can occur that incorporate project elements that parallel the needs of the community and maintain the project budget within the funding allocation of $4.7 million.

The proposed design Amendment is to revise the project scope to include the following improvements:

• Pulverization and overlay of the existing pavement from Mansfield Highway to Lifestyle Circle. This will reduce the quantity of new concrete pavement, but additional design effort is required to install drainage ditches, driveway culverts, or other storm drain improvements within the existing right-of-way;
• Full reconstruction of the Parker-Henderson Road from Lifestyle Circle to David Strickland Road including sidewalks to link the abutting residential land uses to the elementary school and Prairie Dog Park;
• Final design of box culverts to replace the existing bridge on Parker-Henderson Road over Prairie Dog Branch;
• Construction of sidewalks on the west side of Parker-Henderson Road from David Strickland Road to Kellis Street. The previous project scope called for full reconstruction for this segment of Parker-Henderson Road, which is being eliminated. Additional design effort is required to install drainage ditches, driveway culverts, and storm drains within the existing right-of-way; and
• Construction of sidewalks on the east side of Parker-Henderson Road from David Strickland Road to Willow Springs Road with drainage ditches in the existing right-of-way.

Funds for this Amendment will be provided from the 2008 Street Improvements Fund. Adjustments to current project appropriations will occur as part of the construction contract award such that remaining funds can be appropriated to other capital roadway needs.

The following Table summarizes previous contract action and Amendments.
  

-	Amount	Project Description	M&C Number	Approved
Initial Contract	$39,300.00	Conceptual Design of Parker Henderson Road from Mansfield Highway to Martin Street	N/A	2/13/2013
Amendment No. 1	$393,767.65	Final Design Plans	C-26422	1/26/2010
Amendment No. 2	$131,637.20	Subsurface Utility Investigations, Additional Geotechnical Investigations, ROW Surveys and Exhibits	C-26846	7/22/2014
Amendment No. 3	$39,740.00	Waterline Design Revisions	N/A	8/08/14
Amendment No. 4	$478,620.00	Revise Design as Noted Above	-	Pending
Contract Total	$1,083,064.85	-	-	-