
The IGGA offers case studies on pavement surfacing techniques and preservation/repair methods. Select the application(s), preservation/optimization technique(s) or pavement criteria/issue(s) to browse the case studies, or use the search function.
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CPR: Rebuilt to Last: Interstate 10, San Bernardino, CA
During the summer of 2010, the California Department of Transportation (Caltrans) programmed a section of I-10 in San Bernardino for rehabilitation. A pavement preservation method of surface repair, known as partial depth repair (PDR), was chosen to address the pavement deterioration. It was repaired using an environmentally-friendly fly-ash, CeraTech D.O.T. Lime rapid repair concrete. The overall success of the project resulted in improving ride quality and comfort, decreasing wear and tear, and extending the pavement's service life.
Application(s)
Highway
Technique(s)
Full & Partial Depth Repair
Issue(s)
Structural/Material Issues
CPR: Rebuilt to Last: Arterial Street Rehabilitation in Ames, IA
In early 2009, engineers for the City of Ames, IA, recognized that the two roads that cross through the heart of the town as well as the campus (Stange Road and 24th Street) were in desperate need of repair. Although the City of Ames traditionally uses an asphalt overlay for this type of repair, they instead opted to use concrete pavement restoration (CPR) with diamond grinding. The methods selected were full depth repair and diamond grinding followed by joint resealing. The city has realized that CPR is the sustainable, cost effective maintenance answer for their concrete pavement.
Application(s)
City/Municipal
Technique(s)
Concrete Pavement Preservation and Restoration, Diamond Grinding
Issue(s)
Smoothness
CPR: Rebuilt to Last: Concrete Pavement Preservation Gives New Life to Cook County, IL Streets
The Cook County, IL, Department of Transportation recognized that 175th Street was in need of repairs from the intersection at Kedzie Avenue to 500 feet east of Governors Highway. The County opted to use Class B patches and diamond grinding. The job was unique due in part to its innovative, two phase traffic control plan. The diamond grinding slurry was continuously collected with an onboard slurry vacuum and disposed of offsite at an approved disposal facility. These improvements will provide the County with approximately 15 more years of service before any other type of repair is needed.
Application(s)
City/Municipal
Technique(s)
Concrete Pavement Preservation and Restoration, Diamond Grinding, Full & Partial Depth Repair, Joint and Crack Resealing
Issue(s)
Smoothness, Structural/Material Issues
CPR: Rebuilt to Last: Diamond Grinding Test and Trial Project in Winnipeg, Manitoba, Canada
The City of Winnipeg in Manitoba, Canada completed its first diamond grinding project in the summer of 2008. Prior to diamond grinding, the streets were generally in good condition and had received full depth repairs and partial depth repairs. The result was smoother pavements that will last longer, and the experience gained from the project will be used to develop further projects.
Application(s)
City/Municipal
Technique(s)
Diamond Grinding
Issue(s)
Smoothness
CPR: Rebuilt to Last: Concrete Pavement Restoration on State Highway in South Dakota
The city of Watertown, South Dakota, chose diamond grinding and dowel bar retrofit (DBR) for its US 212 project to enhance ride quality and skid resistance. DBR was implemented to restore load transfer across joints. The result was a smooth surface that has remained in good condition for more eight years.
Application(s)
City/Municipal
Technique(s)
Diamond Grinding, Dowel Bar Retrofit
Issue(s)
Smoothness, Structural/Material Issues
CPR: Rebuilt to Last: Minnesota Department of Transportation utilizes full CPR toolbox and diamond grinding
Concrete Pavement Restoration (CPR) techniques were applied on I-94 between Stearns County State Aid Highway 75 and Trunk Highway 241. The project involved diamond grinding, full depth repair (FDR) and partial depth repair (PDR), joint resealing, crack resealing, and the introduction of Next Generation Concrete Surface (NGCS) to enhance ride quality and reduce noise.
Application(s)
Highway
Technique(s)
Concrete Pavement Preservation and Restoration, Diamond Grinding, Full & Partial Depth Repair, Joint and Crack Resealing
Issue(s)
Smoothness, Structural/Material Issues, Sustainability/Environmental

