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Alternate Bidding: The West Virginia Experience. 2011Virginia Concrete Conference March 3, 2011 Richmond, VA. Bob Long Executive Director ACPA Mid-Atlantic Chapter. Evolution of Alternate Design Alternate Bid (ADAB) Procedures .

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alternate bidding the west virginia experience

Alternate Bidding: The West Virginia Experience

2011Virginia Concrete Conference

March 3, 2011

Richmond, VA

Bob Long

Executive Director

ACPA Mid-Atlantic Chapter

evolution of alternate design alternate bid adab procedures
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

corridor h us 48 moorefield july 2008
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

concrete pavement design
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
asphalt pavement design
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
slide6

West Virginia Department of Transportation

Division of Highways

Bid Results - Letting of July 15, 2008

slide7

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.

slide8

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.

.

recent adab projects
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
recent adab projects10
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
recent adab projects12
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
recent adab projects13
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
the results
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.

upcoming adab projects
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
why adab works in wv
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

thank you

THANK YOU!

www.midatlantic.pavement.com

www.pavement.com