Item No.          6g attach
Date of Meeting       October 13, 2020
C102162 Air Cargo Rd Safety Improvements
Construction Authorization

Project Scope
Early Work (Completed 2017)
Critical Pavement Repair
Main Project
Pavement Remediation
Sidewalks / Bus Stops
Cell Phone Lot Improvements
Traffic Signals
Roadway Illumination
Landscaping
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Project Budget and Schedule
Original Budget: $ 8,819,590          Original Completion: 2020 Q3
Revised Budget: $13,500,000         Revised Completion: 2021 Q3
Budget increase due to:               Schedule delay due to:
Scope Changes (additional traffic    Late external review responses
signals, Cell Phone Lot                Protracted consultant rate
improvements, landscaping,          negotiations
unknown site conditions, sewer     Resource constraints
capacity improvements)
Consultant vs. Staff Support
Cost escalation
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Anticipated Construction Impacts
Active construction anticipated Q2 and Q3 2021
Lane restrictions due to sidewalk construction
Westbound S 170th St reduced by one travel lane
Air Cargo Rd reduced to one travel lane each direction (no turn lane)
Temporary partial Cell Phone Lot closure for improvements
Paving will require closures and detours (night time activity)
S 170th St becomes one-way
Air Cargo Rd reduced to one lane in each direction
Airport Expressway On- and Off-Ramp and Cell Phone Lot closures
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Project Risks
Risk                 Description             Prob.      Impact          Mitigation Plan
COVID-19 Cost      COVID-19 requirements increase      High       Medium   Project estimate accounts for
construction cost                                             COVID-19 requirements based
upon current active projects
COVID-19 Schedule  COVID-19 delays material            Low       Medium   Project team tracking local
procurement during construction                            market conditions
Unknown Site       Project encounters unknown site    Medium     Medium   Construction contract includes
Conditions /         conditions or contaminated soils                              force accounts to manage risk
Contaminated Soils  during construction
Temporary Signal    Existing Cell Phone Lot signal fails      Low       Medium   Existing O&M contract includes
prior to replacement                                         scope for repairs if required
Cemetery Property  Project encounters unknown or       Low       Medium   Archeological oversight is
shifted burial site                                                  planned during adjacent
sidewalk work

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