Alternate Bidding: The West Virginia Experience

1. Alternate Bidding: The West Virginia Experience 2011Virginia Concrete Conference March 3, 2011 Richmond, VA Bob Long Executive Director ACPA Mid-Atlantic Chapter

2. Evolution of Alternate Design Alternate Bid (ADAB) Procedures Joint efforts began in the Fall 2007 including WVDOH, FHWA and industry. Formal procedures implemented in July 2008 All procedures finalized June 2010

3. CORRIDOR H – US 48 MOOREFIELD (July 2008) First “formal” Alternate Bid pavement project 10.6 miles 4-lane arterial No life cycle cost adjustment (C factor) Included asphalt escalator Asphalt by the ton and PCCP by the SY

4. CONCRETE PAVEMENT DESIGN Pavement Typical Description: • Perpetual pavement design provided by Industry using Westergaard Equations Design • 10” Jointed Plain Concrete Pavement on 4” free draining base • 15’ doweled joints • Full depth tied concrete shoulders 10” Jointed Plain Concrete Pavement 4” Free Drain Base • Assumptions: • Analysis period = 50 yrs • Initial performance period = 22 yrs • Rehab performance period for CPR = 14 yrs • Rehab performance period for Overlay = 14 yrs • No Salvage value @ year 50 • Rehab #1 – diamond grinding and 7.5% joint patching • Rehab #2 – overlay w/2” skid resistant mix w/PMA and 2% joint patching

5. ASPHALT PAVEMENT DESIGN PavementTypical 2” 12.5mm skid w/76-22 AC 2.5” 19mm mix w/76-22 AC 4” 25mm mix w/64-22 AC 5” 37.5mm mix w/64-22 AC + 0.5% AC content 4” Free Drain Base Description: • Perpetual pavement design provided by Industry using PerRoad 3.2 Design Program • 13.5” HMA on 4” free draining base • Use PG 76-22 polymer modified asphalt (PMA) binder in top 4.5” and on future overlays • Increase AC by 0.5% in bottom 5” • Assumptions: • Analysis period = 50 yrs • Initial performance period w/PMA = 22 yrs • Rehab performance period w/PMA = 14 yrs • No salvage value @ year 50 • Rehab #1 – mill and resurface w/2” skid resistant mix w/PMA • Rehab #2 – mill and resurface w/2” skid resistant mix w/PMA

6. West Virginia Department of Transportation Division of Highways Bid Results - Letting of July 15, 2008

7. SECTION 690 MAINLINE PAVEMENT 690 – GENERAL 690.1 - DESCRIPTION: This Special Provision shall define the requirements to construct mainline pavement, which includes roadway pavement and full depth paved shoulders, to the limits as shown by the contract plans. The contractor shall construct one of the pavement systems as described herein and by the contract plans.

8. CONCRETE PAVEMENT SYSTEM: A concrete pavement system shall be constructed as defined by the concrete typical section(s) and all other documents referenced in the contract plans. This work and materials shall include jointed plain concrete pavement, free draining base, fabric for separation, subgrade, and subgrade preparation ASPHALT PAVEMENT SYSTEM: An asphalt pavement system shall be constructed as defined by the asphalt typical section(s) and all other documents referenced in the contract plans. This work and materials shall include asphalt wearing surface, asphalt base courses, free draining base, fabric for separation, subgrade, and subgrade preparation. .

9. RECENT ADAB PROJECTS WV 10 – 3.7 miles • 4-lane arterial on new alignment – pre-graded • 10” PCCP vs. 12.25” Asphalt • Bid by the SY of Mainline Pavement • 4 of the 6 bidders bid concrete and the low concrete bid was 17% lower than asphalt • Low SY price was $60.00 King Coal US52 – 9.5 miles • Pre-graded and bid by the SY of Mainline Pavement • 10” PCCP vs. 11.5” Asphalt • 5 out of 6 bidders went concrete and the concrete bid was 3% lower than asphalt • Low SY price was $48.45

10. RECENT ADAB PROJECTS WV Corridor H, US 48 – 3.3 miles • 4-lane arterial on new alignment – pre-graded • 10” PCCP vs. 13.5” Asphalt • Bid by the SY of Mainline Pavement • 4 of the 5 bidders bid concrete and the low concrete bid was 29% lower than asphalt • Low SY price was $46.40

12. RECENT ADAB PROJECTS US Route 35, Putnam County – 14.5 miles • Design build – lump sum bid • 4-lane arterial with structures on new alignment – grade, drain, pave & structures • Bid by the SY of Mainline Pavement • 10” PCCP vs. 12.5” Asphalt • Four proposers – 3 confirmed use of concrete pavement • Successful team went with concrete

13. RECENT ADAB PROJECTS WV Corridor H, US 48 – 6.0 miles • Design bid build • 4-lane arterial with structures on new alignment – grade, drain, pave & structures • Bid by the SY of Mainline Pavement • 10” PCCP vs. 12.5” Asphalt • Low bidder went with concrete • Low SY price was $44.50

14. THE RESULTS 8 out of 9 projects went concrete when bid as an alternate to asphalt On these projects about 80% of the bidders have bid concrete and all have had at least 4 bidders WVDOH has saved $9,800,000 just on the four paving jobs alone over the low asphalt bids.

15. UPCOMING ADAB PROJECTS • Route 9 - Charlestown - VA line – 3.1 miles paving only • Corridor H - Rte. 1 to Mount Storm – 11.8 miles paving only • Corridor H - Mount Storm to Parsons - 10 miles grade, drain, & pave

16. Why ADAB “Works” in WV WVDOH senior management support Strong new construction program Equivalent designs Economized PCCP design (no seal, no dowels in shoulder, no cure on CTOGB Most asphalt work controlled by one company

19. Alternate Design Alternate Bid Questions?????

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