The North Texas Tollway Authority Expedited Design

2. Topics for Discussion The PGBT Segment IV Success Story The DNT Extension Phase 3 Success Story Aggressive Project Incentive Use Pros/Cons of Design-Bid-Build Summary Questions

5. The PGBT Segment IV Success Story Funding includes $135 ISTEA Loan Full NEPA EIS Significant environmental challenges Design at risk during the environmental process Schematics, ROD and 404 permit approvals obtained in same month

6. Right-of-way acquisition and utility relocations started immediately First project bid 4 months after environmental ROD Successful opening in September 2005, 5 months ahead of schedule Negotiated acceleration on each contract Negotiated additional open to traffic incentives The PGBT Segment IV Success Story

8. The DNT Extension Phase 3Success Story Primary ROW was donated before design began ILAs in-place and executed before design began Incorporated city water & wastewater relocation into PS&E package Leveraged franchise utility agreements for relocations

9. The DNT Extension Phase 3Success Story Combined 2 design packagesinto 1 to balance earthworkand ensure better unit cost First project design deliveredin 16 months, $83M inconstruction cost No slippage for design consultants, liquidated damages Created corridor-widemasterplans for ITS, signing & illumination Created System Wide Design Guidelines for entire corridor

12. Aggressive Project Incentive Use DNT MLP 2 & 3 express lane reconstruction Contract allowed 17 days of lane closure

13. Aggressive Project Incentive Use Aggressive incentives resulted in:

14. Analyzing the Process Compare to stockbroker model: Full Service Broker � rewards may be greater by hiring the professional, but loss of control may be costly Discount Broker � owner manages the process to maximize reward Owner should be informed and develop strengths to self manage portfolio

15. Pros to Design-Bid-Build A traditional process Process is flexible Offers ability to manage time and cost Potential of retaining the risk premium sought by the Design-Builder Utilizes similar Value Engineering savings as Design-Build Competitive bidding results in lowest cost Relative ease of ensuring Quality Control

16. Cons to Design-Bid-Build Contractors focus on exploiting error in Specifications & Estimate Increases in construction cost risk to owner Standardize design for market wide application Does not leverage individual contractor strengths Prescriptive contracts reduce design innovation opportunities

17. Optimizing Design-Bid-Build Put greater responsibility on designer to prepare a complete package � PS&E Incorporate Value Engineering in design Constructability reviews Expediting letting process Design at risk in advance of environmental clearance or bond sale Managing risk Incentives/damages

18. Summary NTTA has had great success on PGBT Segment IV and DNT Extension Phase 3. The expedited design-bid-build process has allowed the NTTA team to:

19. Questions?Contact:Mark Bouma, P.E.mbouma@ntta.org214-461-2058