DEPARTMENT: Transportation
FILE TYPE: Consent Action
TITLE
title
Authorization To Execute Amendment To Contract With HDR Engineering, Inc., For County Road 86 Railroad Bridge Replacement In Castle Rock Township, County Project 86-34
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PURPOSE/ACTION REQUESTED
Authorize execution of an amendment to the contract with HDR Engineering, Inc. (HDR) for reviewing the submittals for changes to the railroad bridge replacement over County State Aid Highway (CSAH) 86.
SUMMARY
To promote a safe and efficient transportation system throughout the County, Dakota County is replacing the original timber railroad bridge over CSAH 86 as part of the roadway reconstruction project (County Project 86-34).
Any changes requested to the bridge plans or material must go first to the Bridge Engineer who designed the bridges (shoofly and replacement), which is HDR. This review process was not included in HDR's original design contract. Some changes are due to unexpected soil conditions, cold weather conditions, and general review submittals required under the construction contract. Other submittals needing review are structural components and concrete mix designs. Some items can be rejected by the railroad and then it must be revised and go through the process again, sometimes several times until it is approved.
The current contract amount is $140,000, and the anticipated bridge completion date is currently spring 2025. There continue to be changes to the bridge and questions regarding the plans that only HDR can address. With two more months of construction and inevitable changes, the costs will exceed this amount. Review costs are averaging almost $9,000 a month.
RECOMMENDATION
recommendation
Staff recommends authorizing the execution of an amendment to the contract with HDR Engineering, Inc., in the amount of $150,000 funded by the Sales & Use Tax.
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EXPLANATION OF FISCAL/FTE IMPACTS
The entire project, both roadway and bridge, is funded through Transportation Sales & U...
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