6g Presentation Air Cargo Road Safety Improvements
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 2 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 3 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 4 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 5
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