1. Interstate 15 North Phase 4 8/19/2015 Update

2. 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

3. I-15 North Phase 4 – Alternative 1

4. 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

5. I-15 North Phase 4 – Alternative 2

6. 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

7. 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 - $ M, Pre-Response 70th percentile - $ M, Post-Response 70th percentile - $ M, Project Cost Range - $ M to 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

8. 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

9. NDOT Project Management Division: Assistant Chief – Lynnette Russell
Project Contact
NDOT Project Management Division:
Assistant Chief – Lynnette Russell –
Phone –
Project Manager – Dwayne Wilkinson –
Phone –