Interstate 15 North Phase 4 8/19/2015 Update

I-15 North Phase 4 – Alternatives Alternatives - 1(3-Level) & 2(2-Level) Goal is a fair comparison between the two Common Assumptions Tropical Parkway Connector will be constructed Range Road is not a thru Street; access is restricted within the National Guard property Centennial Parkway will be extended to Speedway Optimized Layouts Intuitive ramp alignments Cost effective use of ROW, embankment vs bridge

I-15 North Phase 4 – Alternative 1

I-15 North Phase 4 – Alternative 1 Advantages Minimal utilities relocation Some utilization of existing roadways Some ROW acquisition & construction could be deferred until Centennial Pkwy is constructed Disadvantages Higher cost of bridges, embankments & walls due to 3-level configuration Multiple heavy turning movements & diversion of Centennial traffic onto Range

I-15 North Phase 4 – Alternative 2

I-15 North Phase 4 – Alternative 2 Advantages Lower cost of bridges, embankments & walls due to 2-level configuration Straight alignment of Centennial without heavy turning movements Stakeholders support Centennial being favored Disadvantages Utilities relocation cost at Range Road to accommodate bridge foundations ROW acquisition cost for Range Rd relocation & Tropical Pkwy Extension

I-15 North Phase 4 – Next Steps Cost Risk Assessment Planned for 09/03/15 Goals for current CRA Develop Risk Register Evaluate Cost & Schedule Develop phased construction contracts Previous CRA – 09/15/2014 – 3 Level only Base Cost - $ 184.88 M, Pre-Response 70th percentile - $ 251.01 M, Post-Response 70th percentile - $ 243.96 M, Project Cost Range - $ 209.02 M to 258.62 M Base Completion Date – Dec 2021, Pre-Response 70th percentile – Apr 2023, Post-Response 70th – Dec 2022, Project Completion Date Range - May 2022 to May 2023

I-15 North Phase 4 – Next Steps Benefit Cost Analysis Benefits Travel Time Savings Accident Reduction Vehicle Operating Cost Savings Vehicle Emission Reduction Cost Construction Right of Way – Utilities & Property Acquisition Project Support (Development) Compare each alternative to no action

NDOT Project Management Division: Assistant Chief – Lynnette Russell Project Contact NDOT Project Management Division: Assistant Chief – Lynnette Russell Email – lrussell@dot.state.nv.us Phone – 702-671-6601 Project Manager – Dwayne Wilkinson Email – dwilkinson@dot.state.nv.us Phone – 702-671-8879