The Asphalt Pavement Alliance (APA) announced today that the Montana Department of Transportation (MDT) has won a 2019 Perpetual Pavement Award (PPA) for a 15-mile section of two-lane U.S. Highway 2 in Roosevelt County. This is MDT’s fifth PPA and first since 2016.
To qualify for this prestigious award, a pavement must be at least 35 years old and never experienced a structural failure. The average interval between the resurfacing of the winning pavement must be no less than 13 years. The pavement must demonstrate the characteristics expected from long-life asphalt pavements: excellence in design, quality in construction and value for the traveling public.
Engineers at the National Center for Asphalt Technology (NCAT) evaluated the nominations and validated the winners.
Built by MDT in 1970, the award-winning section of US 2 runs from milepost 611 to milepost 626. The original construction consisted of 14.4 inches of crushed base course, 2.4 inches of crushed top surfacing, followed by 4.8 inches of plant mix bituminous base. In 1979, the second stage of construction added 3 inches of plant mix bituminous surfacing. In 1999, the project was overlaid with 1.8 inches of plant mix bituminous surfacing.
Today, US 2 has an average daily traffic (ADT) volume of 1,850 vehicles. Since its construction, it has carried approximately 964,000 equivalent single-axle loads (ESAL)
In its 49 years of service and since stage construction ended in 1979, US 2 has only been resurfaced once.
“The Montana Department of Transportation is honored to receive its fifth Perpetual Pavement Award,” said Jeff Jackson, MDT’s Pavement and Geotechnical Bureau Chief. “Highway 2 is a vital corridor in Montana’s highway system, and this recognition shines light on our commitment to the sustainability of our infrastructure. MDT is proud of its people and their commitment to designing and constructing high quality projects in the great State of Montana.”
As a winner of a 2019 PPA, MDT will receive an engraved crystal obelisk, and its name and project will be added to a permanent plaque that is kept at NCAT.
“One of the keys to sustainability is long life,” said Amy Miller, P.E., Executive Director of the APA. “Asphalt roads can be engineered to last indefinitely with only routine maintenance and periodic surface renewal.
“The advantages of these perpetual pavements are significant. Life cycle costs are lower because deep pavement repairs and reconstruction are avoided. User delays are reduced because minor surface rehabilitation requires shorter work windows and can avoid peak traffic hours. And there are environment benefits because minimal rehabilitation, combined with recycling any materials that are removed from the pavement surface, reduces the amount of material resources required over the pavement’s life.”
The Asphalt Pavement Alliance is a coalition of the National Asphalt Pavement Association, the Asphalt Institute and the state asphalt pavement associations. The Asphalt Pavement Alliance’s mission is to establish asphalt as the preferred choice for quality, performance and the environment.
The Asphalt Pavement Alliance (www.driveasphalt.org) is a partnership of the Asphalt Institute (AI), National Asphalt Pavement Association (NAPA) and the State Asphalt Pavement Associations. The Asphalt Pavement Alliance’s mission is to establish asphalt as the preferred choice for quality, performance and the environment.
The Asphalt Institute (www.asphaltinstitute.org) is the international trade association of petroleum asphalt producers, manufacturers and affiliated businesses. AI promotes the use, benefits and quality performance of petroleum asphalt, through engineering, research, marketing and educational activities.
The National Asphalt Pavement Association (www.asphaltpavement.org) represents the interests of U.S. asphalt producers/contractors before Congress, federal agencies, and other national trade and business organizations. NAPA supports an active research program designed to improve the quality of asphalt pavements and paving techniques used in the construction of roads, streets, highways, parking lots, airports, and environmental and recreational facilities.
The State Asphalt Pavement Associations (www.asphaltpavement.org/sapas) represent the interests of asphalt pavement producers and paving companies at the state and local level across the United States.