Better Roads December 2014 11
different ways from those applied on low-volume road-
ways because of the higher standards used in design and
construction of higher-traffic-volume roadways.
Nonetheless, the document says, the preservation of high-
traffic roadways is as important as the preservation of lower-
traffic roadways, as many conditions hold true for both:
• Agency resources are limited and pavement preservation
saves money in the long run
• Preservation provides benefits to the traveling public,
including safer and smoother roads, and
• Preservation can be done more rapidly than rehabilitation,
with fewer adverse effects on the traveling public.
"Admittedly, there are also challenges to the use of preser-
vation strategies on high-traffic-volume roadways," according
to Preservation Approaches. These include a smaller "toolbox" of
treatments that can be used successfully, more difficult treat-
ment construction because of shorter available closure times,
less available information on treatment performance and life,
increased risk, and less available guidance on preservation
strategies.
"Nonetheless, it is believed that the benefits of practic-
ing preservation on high-traffic-volume roadways outweigh
the challenges," the SHRP2 document notes, adding "it is
worthwhile to take steps to increase or improve the practice
of pavement preservation on these roadways."
For key findings about the current use of preservation treat-
ments on high-volume pavements, go to BetterRoads.com.
For More Information
TRB's second Strategic Highway Research Program (SHRP
2) Report S2-R26-RR-1: Preservation Approaches for High-Traffic-
Volume Roadways may be downloaded in pdf format at trb.org/main/
Blurbs/165280.aspx.
The same project produced a companion SHRP 2 docu-
ment, Report S2-R26-RR-2: Guidelines for the Preservation of High-
Traffic-Volume Roadways. Download your copy of the guidelines
at: trb.org/Main/Blurbs/164965.aspx.
Video and PowerPoint presentations from the Minneapolis
conference now are available online. To download, please
visit https://tsp2pavement.pavementpreservation.org/midwestern-mppp/
annual-meetings/2014-2/.
For more information on pavement technologies and other
SHRP 2 solutions, visit SHRP2.transportation.org or www.fhwa.dot.
gov/goshrp2.
For information on MnROAD, visit mndot.gov/mnroad, and
visit ncat.us for more information on NCAT.
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