The RRRP budget is used for improvements to the road surface, road structure (for rebuild projects), concrete curb, gutter and sidewalk maintenance or replacement, catch basin and manhole replacement and landscaping.
There are three primary road treatments used to renew residential roads within the RRRP:
- Thin Lift Overlay – A thin layer of asphalt is placed either directly over existing asphalt which has been tack coated or has had minimal milling done in advance of the application of new asphalt.
- Rehabilitation – Sometimes referred to as asphalt recap, it involves removing the existing asphalt layer by milling it and replacing with a new, thicker layer of asphalt. This is thicker than a thin lift overlay.
- Rebuild – The asphalt top and underlying layers of material are removed and replaced with new material. The materials, layer thicknesses and placements meet or exceed the current City construction specification for a residential road. This is done to ensure the new road stays in better condition for a longer time.
There are four primary concrete treatments used for residential sidewalks within the RRRP:
- Grinding – This process addresses trip hazards by grinding the raised portion of the sidewalk to make it flush with the original sidewalk.
- Concrete Replacement – In cases where damage to the sidewalk is too severe for other treatments, sections of the sidewalk may be replaced. This process involves removing damaged sections and pouring a new sidewalk.
- Mud Jacking – This is used to relevel a sidewalk that has titled the wrong way or because it has settled over time. This process involves injecting grout below the sidewalk to fill any voids and raise the sidewalk to the required height. For mud jacking to be effective, the sidewalk must be relatively free of cracks, not have had this process more than once and have a front edge that runs along the road, referred to as a gutter.
- Asphalt capping – This is the placement of an asphalt overlay on a sidewalk that requires immediate attention due to severe sidewalk deficiencies. This process provides a smooth walking surface for pedestrians and is a relatively inexpensive solution when necessary.
- Do Nothing – Sometimes, the best course of action is to not apply any treatment to the sidewalk. This is determined after a thorough investigation is complete and when the concrete is in fair to good condition. This sidewalk is not showing signs of continued deterioration and has minor deficiencies such as small cracks that have not worsened for many years.