The South Carolina Design-Build Experience Presented by: Rocque L. Kneece, P.E.

1. The South Carolina Design-Build ExperiencePresented by: Rocque L. Kneece, P.E.

2. Southern Connector $ 206 million COMPLETE I-95 Honda Interchange $ 8 million COMPLETE Wateree River $ 8 million COMPLETE Conway Bypass $ 386 million COMPLETE Carolina Bays Parkway (2) $ 54 million ACTIVE Brockman-McClimon Interchange $ 52 million SELECTION Reedy & Enoree Bridge* $ 3 million COMPLETE Carolina Bays Parkway (1) $232 million COMPLETE Cooper River Bridge $ 531 million ACTIVE DESIGN-BUILD PROJECTS SC 170 Widening $80 million ACTIVE

3. Carolina Bays Parkway Horry County, SC New Location Freeway 22 miles in Length Includes Right of Way Acquisition $232 million

7. Carolina Bays Parkway - The Quality Challenge -

8. Quality • Materials - Procedures

9. Carolina Bays Parkway

11. Carolina Bays Parkway

13. QA/QC RESPONSIBILITY • QA/QC Testing by Contractor • Job Control Testing Used for Acceptance • Independent Assurance Testing by DOT • Discrepancies in Test Results resolved by third party testing

14. Additional Measures by DOT • Assigned Resident Construction Engineer • Hired Consultant for Monitoring and Testing • DOT sets 10% Independent Test Ratio

15. QA/QC COMMITMENT PROJECT DOT CONTRACTOR QA/QC QA/QC 1 3+ ENOREE/REEDY R. BRS. WATEREE R. BRIDGE SC 170 WIDENING CAROLINA BAYS PKWY COOPER RIVER BRIDGE 1 5+ 5+ 9+ 9 12+

16. Cooper River Bridge Charleston, SC $532 million

18. Existing Bridges

19. Project Location New location

20. Project Statistics • Length (Hwy 17) – 3.5 miles • Drilled Shafts - 427 • Concrete – 308,000 CY (poured in place) • Rebar – 53,000 tons • Structural Steel – 43,000 tons • Concrete Girders – 717 • Bridge Deck – 2 million sq. ft. (28 lane-miles) • ONLY 4.92 acres of environmental impacts!

25. QA/QC BASIC STRUCTURE • QC Testing by Contractor • Acceptance Testing by DOT • DOT Test Rate Equals 20% of QC Testing • Independent Assurance Testing by DOT

26. DESIGN-BUILD CONTRACTS QA/QC PERSONNEL PROJECT DOT CONTRACTOR QA/QC QA/QC 1 3+ ENOREE/REEDY R. BRS. WATEREE R. BRIDGE SC 170 WIDENING CAROLINA BAYS PKWY-1 COOPER RIVER BRIDGE 1 5+ 5+ 9+ 9 + 12+ 18+20+ Contract Responsibility Not a Contract Responsibility

27. The Environmental Challenge • Sediment and Erosion Control • Construction Access • Hazardous Materials • Turtle Lighting • Community Impacts

28. The Environmental Challenge • Joint Environmental Inspections • Contractor and DOT Contractor has a full time environmental inspector on the project • Full Time SCDOT Environmental Consultant • Together, the team of environmental professionals functions to ensure environmental compliance and to expedite the environmental process.

29. Sediment & Erosion Control • Approximately 2 miles of silt fence, 10 temporary sediment basins, and several check dams among other control measures are installed on the project. • Contractor and SCDOT have strict inspection processes in place to monitor erosion control measures. • Inspections weekly and after every .50” rain

30. Temporary Sediment Basin

31. Construction Access • A total of 3 temporary construction trestles were erected for the project. • Greatly minimized impacts to wetlands while still allowing construction access.

33. Hazardous Materials • SCDOT has remediated five UST’s, disposed of more than 100 cubic yards of contaminated material, and abated lead based paint and asbestos from structures ranging from houses to bridge. • During the construction of the CRB, SCDOT has spent an additional half million dollars for handling of hazardous materials/waste encountered during construction.

34. Pumping material from an abandoned UST encountered in the Charleston Interchange.

35. Potential Turtle Impacts • Concerns raised that bridge lights may disturb loggerhead hatchlings • Aesthetic Lighting Modified • Lights are controlled by timer • Lights may be dimmed • Lights may be turned off

36. Community Impacts • Nine homes within the project ROW were relocated for affordable housing. • The homes were placed on new foundations at various sites in the community and are being renovated through a partnership between SCDOT and the City of Charleston.

39. Lessons Learned • Include the Draft Contract with the RFP • Include Schedule of Values in Contract • QC/QA - Trust but verify • Independent Assurance by DOT • Be sensitive to the community concerns • Make Partnering a Key Element • Establish Lines of Communication • Time really is money – make decisions quickly

40. LAST LESSON LEARNED

41. BE CAREFUL OUT THERE… You never know what you might find.