During the 58th Annual Convention of the International Slurry Surfacing Association (ISSA) held February 17-21, 2020, in San Antonio, Texas, ISSA named four winners for the new ISSA Preservation Performance Award.
The ISSA Preservation Performance Award was established to award both an owner or agency or engineering firm that specified and managed the project and the member contractor for their work. This award recognizes and honors pavement preservation projects that prove the long-time performance and network enhancement of pavement preservation.
Past President Rex Eberly and ISSA President Doug Hogue present Ada County Highway Department’s Lloyd Carnegie with the ISSA Preservation Performance Award.Photo by Tom Kuennen, courtesy of FP2.
Ada County Highway District, Idaho was the first recipient. In 1996, Ada County’s Pavement Condition Index (PCI) was below a 65. They were chip sealing roads and streets on a nine-year chip seal program but found their PCI was slightly dropping. Ada County found that using crack sealing prior to each chip seal and reducing the program to six years improved their PCI readings. In areas that were not fit for chip seal, micro surfacing and slurry seal were used. Ada County network’s PCI has grown to above 80 and has been kept there for over 20 years.
ISSA President awards VSS International’s Jeff Roberts with the ISSA Preservation Performance Award. Photo by Tom Kuennen, courtesy of FP2.
Also recognized with ISSA’s Preservation Performance Award were, VSS International (contractor) and the City of Scottsdale, Arizona. In the early 2000s, the City of Scottsdale had a Pavement Condition Index (PCI) of over 80 but found over time their PCI was falling to near 70. In 2014, the city decided to develop a plan to improve its declining work and over the past five years, the City of Scottsdale has implemented one of the most aggressive and innovative pavement preservation projects. The city chose mico surfacing as the primary treatment. Minor crack repairs and paving were completed before the mirco surfacing was applied. In 2018, a new evaluation was performed and after four years of pavement preservation the network’s PCI had returned to over 80.
Vance Brothers Inc’s Tim Harrawood receives the ISSA Preservation Performance Award for President Doug Hogue. Photo by Tom Kuennen, courtesy of FP2.
Nominated by Ergon Asphalt Emulsions & Asphalt Inc., Vance Brothers Inc (contractor) and the Mississippi Department of Transportation were also recognized with ISSA’s Preservation Performance Award. In 2005, the Mississippi Department of Transportation District 2 chose to micro surface 12 miles of Highway 61 in Tuncia County. The micro surfacing project goals were to extend pavement life for six to eight years, protect from further oxidation and raveling, and address rutting, international roughness index, cracking and friction. The program exceeded expectations by providing the pavement with an additional 14 years of service life and counting as well as a durable wearing surface with a friction value above acceptable limits.
The final ISSA award for 2020 was presented to Downer EDI works and the North Eastern Maintenance Alliance (NEMA) in Australia. The Victoria Roads Maintenance Program identified a section of arterial road in Benalla in Nth East Victoria which was formerly part of the interstate highway. In 2014, the project was started using a combination of preservation treatments including spray applied seal combined with micro surfacing. The design was specified to improve pavement quality characteristics for waterproofing, road noise, resistance to turning and torque actions, and overall aesthetics. The project was reviewed at six years and found to be successful with the pavement still exhibiting improved pavement conditions.