Full Depth Shoulders In Wisconsin – Follow-Up

Full Depth Shoulders In Wisconsin – Follow-Up Steve Krebs and Jed Peters– DTSD-Bureau of Technical Services July 29, 2013

Requests from Previous Meeting • Non-Conservative Costs • 4 Policy Options with Implementation Costs • FDM Work Zone Delay Restricted Corridors • High Volume Arterials (color coded peak hour volume map) • TOIP • Freight Network

FDS Construction and Cost Considerations - Review • 10 Projects Analyzed • 8 Concrete Mainline • 2 HMA Mainline • As-built and Estimated FDS Costs

Shoulder Construction Cost Summary (Non-Conservative) • Concrete Mainline Projects • As-built average (avg) cost: $182,920/mile • FDS HMA avg cost: $346,430/mile • FDS concrete avg cost: $265,000/mile • HMA Mainline Projects • As-built avg cost: $123,320/mile • FDS HMA avg cost: $171,600/mile

Non-Conservative LCCA– Summary (Estimated Shoulder Reconstruct at 28 Years) • Concrete Mainline Projects • As-built avg net present value (NPV) life-cycle 50 year cost: $354,120/mile (Original Value: $276,720) • FDS HMA avg NPV life-cycle 50 year cost : $428,310/mile • FDS concrete avg NPV life-cycle 50 year cost : $345,140/mile • HMA Mainline Projects • As-built avg NPV life-cycle 50 year cost : $250,230/mile (orig: $198,050) • FDS HMA avg NPV life-cycle 50 year cost : $243,210/mile * NPV calculated with 3.5% discount rate

Non-Conservative Benefit Cost Analysis– Summary

IH-39 Case Study Cost Summary • Estimated As-Built Construction Cost/Mile • Estimated 10” FDS Construction Cost/Mile • Life Cycle Adjusted to Reflect True Life-To-Date • Minimal/Negligible maintenance costs • 2012 Project (Year 28 of life cycle)- 8” Shoulders Let Cost/Mile • $333,850/mile • Adjusted LCCA Costs • As-built NPV = $519,200/mile • FDS NPV = $483,850/mile

Previous Recommendations • Selective Application of FDS • High-Volume Arterial Corridors • Mass Evacuation Routes • Incorporate FDS (Existing and Future) into Emergency Planning

Recommendations/Policy Options Investigated at Request of Committee • Selective Application of FDS • FDM Delay Corridors • High Volume Arterials • TOIP • Freight

FDM Delay Restricted Corridors 1670 Miles

High-Volume Arterial Corridors :1580 Miles :1270 Miles Volumes Estimated For Highest Direction in 30th Highest Hour in 2013 : 1180 Miles : 1070 Miles : 850 Miles

TOIP Priority Corridors: 1190 Miles

OSOW Not Investigated as Stand-Alone

Weighted Freight Map ~Equivalent to Backbone System

Policy Cost Implications • High Volume Arterials ($0.89 – $1.3 Billion) • $350 - $518 Million More than Conventional HMA • $89 - $98 Million Less than Minimum Concrete • TOIP Priority Corridors ($985 Million) • $390 Million More than Conventional HMA • $99 Million Less than Minimum Concrete • FDM Delay Restricted Routes ($1.4 Billion) • $548 Million More than Conventional HMA • $139 Million Less than Minimum Concrete • Freight Routes = Backbone System ($1.3 Billion) • $518 Million More than Conventional HMA • $131 Million Less than Minimum Concrete

Final Policy Recommendation • Factor of All (High Volume Arterials, TOIP, Freight, and FDM Delay Corridors) • Driving Need: Traffic Demand • 1000 VPH (2013 data)

Recommended Applications 1180 Miles

Policy Cost Implications • Total Cost • FDS: $977 Million • HMA Conventional: $590 Million • Minimum Concrete: $1.1 Billion • FDS Average Annual Cost (Average of 30 Reconstruct or Pavement Replacement projects with 18 Miles/Year) • FDS: $14.9 Million • HMA Conventional: $9 Million • Minimum Concrete: $16.4 Million • Nearly 150 Miles ($119 Million) Completed or Planned • N-S Freeway, Zoo Freeway, IH-39, USH 41

Questions?

Full Depth Shoulders In Wisconsin – Follow-Up