1. European Asphalt Pavement Warranties Scan
September 14-28, 2002

2. FHWA International Technology Scanning Program
Bringing Global Innovations to U.S. Highways

3. FHWA International Technology Scanning Program
Sponsored 50 scans since 1990
Snowplow air and pavement temperature sensors
Heavy-duty asphalt that resists rutting
Safer bicycle and pedestrian lane design
Innovative contracting

4. European Asphalt Warranty Scan
Scan goals to determine:
Practices to maintain prescribed levels of asphalt pavement smoothness and skid resistance
Criteria used in successful asphalt pavement warranties
Pavement performance prediction tools

6. Warranty Definitions Warranty Warranty Period
Performance-based contract
Guarantees the integrity of a product
Contractor responsible for replacement of defects
Warranty Period
Pre-specified for repair defects in the product
Provide assurance of performance, but not to unnecessarily inflate contract prices

7. Warranty Definitions Materials and Workmanship Performance
Method specifications
Includes distresses resulting from defective materials and/or workmanship
Performance
Performance specification
Contractor designs some level of structural pavement and/or mix decisions
Includes full responsibility for pavement performance

8. Summary Observations Material and workmanship warranties common
All have at least 1 to 4 year warranties
Several have 5 year performance warranties
Many countries trying 10 to 18 year performance warranties

9. Summary Observations Spain UK Germany Denmark Sweden Denmark Sweden UK30 25 20 15 10 5 1
Duration of Warranty (years)
Spain UK
25-30
Germany 20
Denmark Sweden
11-16
Denmark Sweden UK 5
Germany 4
Spain UK
1-2
Materials and Workmanship
Materials and Workmanship
Performance
Pavement Performance Contracts
Pavement Performance Contracts “Functional”
Design-Build Finance Operate
Method Specification
Method Specification
End Result Specification
End Result Specification
End Result Specification
End Result Specification

10. Summary Observations Material & Workmanship Short-Term Performance
Warranty Involvement
Warranty Involvement
Design
Const
Trafficking
Design
Const
Trafficking
Long-Term Performance
Design-Build Finance Operate
Anticipated Maintenance
Anticipated Maintenance
Warranty/Performance Involvement
Warranty/Performance Involvement
Design
Const
Trafficking
Design
Const
Trafficking

11. Summary Observations
Performance warranties typically cover ride, friction, rutting, cracking, and durability
The contractor designs the materials and structure to meet performance criteria

12. Summary Observations
No countries use low bid to award large project contracts
Prequalification and Best-Value used by all countries
Criteria include design, safety, innovation, environment, and extended warranties
Panels evaluate the tenders based on set and transparent procedures

13. Summary Observations
All host countries believe warranties have improved quality
Performance warranties have allowed some innovation by the contractor over materials and workmanship

14. Project Scope Definition
New, resurfacing, and reconstruction
Dependent primarily on size of project
Owner determined traffic loads and pavement condition data
Prime contractor responsibility
Some user delay costs

15. Pre-Contract Award Procurement Similar in all Countries
Pre-qualification processes
Best-value selection
Noted as key to success in all countries

16. Bonding
Construction and warranty bonds were used, but varied in length
Examples
Germany – 5% const. & 2% warranty
Denmark – 15% const., 10% year 1 and 2% for remaining warranty
Sweden – 10% construction

17. Design-Methods Both method and end results specifications are used
Performance warranties involved more contractor design
Concessions involved the most freedom of design

18. Operation and Maintenance
Maintenance is “implicitly” included for material & workmanship and short-term performance contracts
Maintenance is “explicitly” included for long-term performance and concession contracts

19. Corrective Action
In all countries, prime contractor is responsible for corrective action
In Denmark, corrective action is paid for in an prorated amount
Conditions to void warranty exist (i.e. heavy traffic loads, owner error, etc.)
In all countries, corrective action is noted in the next bid

20. Project Performance
Warranty performance measurements varied, but are similar to US
IRI
Friction
Rutting
Longitudinal Cracking
Transverse Cracking

21. Pavement Performance Contracts
PPC are long-term resurfacing and maintenance contracts
Length varied by country
Sweden – 5-8 years
Denmark – years
Germany – 20 years
Contractor is responsible for design, construction, maintenance, and some financing

22. Pavement Performance Contracts
Maintenance Classification
Maintenance
Major Maintenance
Rehabilitation
Reconstruction
Filling of isolated potholes, minor pavement remarking
Crack filling or micro surfacing of a significant area of paving
Asphalt Overlays
Mill and overlay of a significant section of pavement
Routine/ Normal Maintenance
Remedial Action

23. DBFOs (Concessionaires)
Design-build, operate, and finance contracts were seen in Spain and UK
25-35 year contracts most common
DBFO has life-cycle motivation
Used as financing vehicle to increase private investment or reduce national debt
Use of shadow tolls for repayment of debt
Number of projects varies by country

24. Maintenance Agreements
Spain and UK are outsourcing maintenance
Similar performance measures to warranties
Spain year contracts
UK 5 year and longer contracts

25. Summary Observations
Customer-focused partnership between government and industry
Prequalification and best-value procurement enable warranties
M&W warranties have long history in Europe
Long-term performance warranties include design, construction, and maintenance

26. Recommendations Federal
Require M&W warranties on all federally funded projects
Promote/enable best-value and prequalification legislation
Create an asphalt warranty resource center

27. Recommendations State Create model warranty documents (AASHTO)
Implement M&W warranties
Implement short-term performance warranties
Enable best-value and prequalification procedures

28. Recommendations Industry Become educated on warranty issues and risks
Participate in warranty policy discussions
Propose on warranty projects
Consider providing operation and maintenance services

29. Implementation Awareness Understanding Commitment Action
Publications and presentations
Understanding
Implementation guides and models
Commitment
Federal, State, and Local endorsement
Action
Compilation and evaluation of implementation results