JACKSON COUNTY — The Mississippi Department of Transportation (MDOT) has received a 2008 Perpetual Pavement award, bestowed by the Asphalt Pavement Alliance (APA), in recognition of a 10.9-mile section of U.S. 90 in Jackson County.
To qualify for this award, a pavement must be at least 35 years old and meet strict quality criteria. It must demonstrate the qualities expected from long-life asphalt pavements: excellence in design, quality in construction and value to the traveling public. Engineers at the National Center for Asphalt Technology (NCAT) evaluated the nominations, and a panel of industry experts validated the winners.
Mississippi’s award-winning road is the section of U.S. 90 that connects Ocean Springs and Gautier. MDOT built the road in two phases, with the first completed in 1954 and the remaining section opening to traffic in 1960. Some sections of the pavement were built over stabilized gravel base, and others over sand clay base. The thickness of the pavement varied over the length of the project. The road received overlays of 2.5 to 4 inches in 1973, and 1.5 inches in 1989.
During 2006 and 2007, the road carried approximately 750,000 equivalent single axle loads (ESALS), which equates to more than seven million ESALS over the lifetime of the pavement.