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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2011Virginia Concrete Conference
March 3, 2011
ACPA Mid-Atlantic Chapter
Joint efforts began in the Fall 2007 including WVDOH, FHWA and industry.
Formal procedures implemented in July 2008
All procedures finalized June 2010
First “formal” Alternate Bid pavement project
No life cycle cost adjustment (C factor)
Included asphalt escalator
Asphalt by the ton and PCCP by the SY
10” Jointed Plain Concrete Pavement
4” Free Drain Base
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
Division of Highways
Bid Results - Letting of July 15, 2008
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.
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.
WV 10 – 3.7 miles
King Coal US52 – 9.5 miles
WV Corridor H, US 48 – 3.3 miles
US Route 35, Putnam County – 14.5 miles
WV Corridor H, US 48 – 6.0 miles
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.
WVDOH senior management support
Strong new construction program
Economized PCCP design (no seal, no dowels in shoulder, no cure on CTOGB
Most asphalt work controlled by one company