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North Dakota Demonstration Project: Whitetopping on U.S. 2 West of Rugby
FHWA, in conjunction with the ACPA regional office, sponsored a 1-day open house to showcase whitetopping as a viable innovation for pavement rehabilitation. The open house was held Sept. 23, 2008, in Rugby, ND. The event featured presentations by NDDOT and FHWA engineers, as well as the contractor and whitetopping experts. More than 40 transportation professionals from NDDOT, FHWA, local agencies, concrete producers, and pavement designers attended the showcase (figure 13). The agenda is in Appendix B.
Figure 13 . Speakers and participants at the showcase.
During the showcase, FHWA representatives provided an overview of the HfL program and an in-depth presentation on whitetopping, especially the Colorado Department of Transportation's (CDOT) extensive research on and implementation of concrete overlay projects. ACPA Regional Executive Director David Sethre detailed the benefits of whitetopping as proven from a historical viewpoint. Clayton Schumaker of NDDOT discussed project details from project development through the process of including whitetopping as an innovation to achieve HfL objectives. The contractor provided an insider's perspective on placing whitetopping. The presentations were followed by a visit to the project site, where participants examined the paver and several miles of completed whitetopping and sawcutting operations. The showcase concluded with a panel question-and-answer session. Figure 14 shows the site visit.
Figure 14 . During the showcase, participants gathered by the paver to discuss the project and sawcutting operations.