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Supplemental Agenda
3.00 CA
ONSENT GENDA
P 3.19* Concow Road Rehabilitation From State Route 70 to End of Pavement (Federal Aid Project
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No. 10-DRI-6785) (County Project No.52515-A1-2013-1) - Contract Change Order No. 1 - On
ORKS
June 10, 2014 the Board of Supervisors awarded the contract for the Concow Road
Rehabilitation to Knife River Construction (KRC) in the amount of $1,761,837. Construction
has started with the installation of underground drainage improvements. The preliminary
design and scoping for this project was done in 2011. The subsequent logging of the areas
burned during the 2008 fires with heavy logging trucks has resulted in even more damage
to Concow Road than was originally identified. As a result, much more of the roadway
section needs to be repaired and repaved. The current condition of the roadway suggests
that about 50% of the road may need repairs. At the bid prices contained in the contract,
the dollar value of road repair would exceed the total amount of funds authorized by the
grant. To only do the work originally estimated would result in a road that consists of a chip
seal over an inadequately repaired roadway. The end result would be the premature failure
of the newly surfaced road. The contractor has made a proposal that addresses the current
conditions of the road and has proposed pulverizing and re-grading and compacting the
entire roadway surface and then placing approximately 3 inches of asphalt overlay over this
surface. The Department of Public Works agrees that this proposal will result in a superior
final product. Contract Change Order No. 1 decreases various contract items totaling
$960,456.60 and provides additional work totaling $1,722,420 for an overall increase of
$761,963.40. Staff has worked with our CDBG grant administrator to confirm that all
additional work is eligible for the grant funds action requested - APPROVE CONTRACT
CHANGE ORDER NO. 1 AND AUTHORIZE THE CHAIR TO SIGN.
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