1. Driving Indiana’s Economic Growth Bidding Alternate Pavement Designs
David Andrewski, PE

2. ALTERNATE PAVEMENT DESIGN
A CONTRACT LET WITH DIFFERENT PAVEMENT TYPE OPTIONS (usually HMA & PCCP) TO BE BID AS EITHER OR BOTH OPTIONS. PAVEMENT ITEMS CAN BE BID SEPARATELY FROM COMMON ITEMS OR ESSENTIALLY TWO DISTINCT LISTS OF PAY ITEMS CAN BE BID. INDOT USES TWO DISTINCT LISTS.

3. WINNING BID
A FACTOR IS ADDED TO EACH BID REPRESENTING THE PRESENT WORTH OF A 50 YEAR PAVEMENT LIFE CYCLE STRATEGY. THE LOW SUM IS THE WINNING BID.

4. HMA STRATEGY 20 Year Initial Design Life
Joint Seal at Year 3, 6, 9, 12, 15, & 18
Mill and Functional Overlay at 20 Years
Joint Seal at Year 23, 26, 29, & 32
Mill and Resurface
Joint Seal at Year 38, 41, 44, & 47

5. PCCP STRATEGY 30 Year Initial Design Life
Reseal Joints at Year 8, 16, & 24
Mill and Functional Overlay at Year 30
Reseal Joints at Year 33, 36, & 39
Mill and Resurface at Year 42
Reseal Joints at Year 45 & 48

6. FACTORS
HMA - $2,353,504.28
PCCP - $1,480,742.91

7. WINNING BID HMA ($) PCCP ($) BID 22,154,963.32 22,290,308.03 FACTOR
2,353,504.28
1,480,742.91
LOWEST BID + FACTOR
24,508,467.60
23,771,050.94

8. WHY Attract More Bidders & Competition
Obtain Savings over Conventional Projects
Develop a More Competitive Market
Optimize Plant, Source, & Supplier Location

9. THE BEGINNING PAVEMENT DESIGN GONE BAD 465 West Leg
Pavement Type Selection Concern
Solution

10. DATA BASE DEVELOPMENT HMA & PCCP COSTS RESEARCHED
4 YEARS OF COSTS ENTERED
AVERAGE COSTS CALCULATED
NEW COST DATA ADDED CONTINUOUSLY

11. PAVEMENT TYPE SELECTION
LCCA CALCULATED
TYPE SELECTION COMMITTEE
PROJECT LOCATIONS AND TYPE IDENTIFIED

12. TYPE SELECTION > 10 PERCENT < 10 PERCENT SPECIAL CASE
USE LESS COSTLY
< 10 PERCENT
Committee selection
SPECIAL CASE
Settlement Areas
Presence of Distillates

13. ALTERNATE BID APPROVAL CONCURRANCE 2009 PROVISIONAL FHWA APPROVAL FHWA
HMA INDUSTRY
PCCP INDUSTRY
2009 PROVISIONAL FHWA APPROVAL
Special Experimental Project No. 14
(SEP 14) For One Project

14. 2009 Project Bid as Contract A and Contract B – Two Sets of Plans
11 Bidders
Losing Contract Cancelled
PCCP Low Bid
Savings - $326,000.00
Merited Additional Contracts

15. 2010 Provisional Approval for Unlimited # Must Proceed as SEP 14
Annual Report for Alternate Bids on Pavement Type
Streamlined Plan Preparation
Developed Technique to Bid Within One Contract

16. 2010 11 Alternate Bid Projects Bid Average of 6.4 Bidders per Contract
Average 26.4 % Below Engineer’s Estimate ($574,000,000.00)

17. 2010 Conventional Contracts
19 Conventional Bid Contracts
Average of 4.3 Bidders per Contract
Average of 17.4 % Below Engineer’s Estimate ($345,000,000.00)

18. 2010 ESTIMATED SAVINGS
$51,000,000.00

19. 2010 Conclusions Considered Very Successful
Attracted More Bidders and Competition
Savings Over Conventional Bid Projects
Provided a More Competitive Market

20. THANK YOU