Road Reconstruction
Road
Reconstruction work involves the removal and replacement of the asphalt surface
and the granular bedding underneath. This type of work typically includes the
replacement of all curb and gutters if present on the street and may include
all or some sidewalk replacement depending on the condition. Temporary road
closures are usually required for these projects with the exception of local
traffic.
Due
to the nature of this work, Town staff also inspect existing Town servicing
prior to construction such as water mains, waste water mains or storm sewers to
determine if repairs or replacement are required as part of the construction
works.
Should
Town staff recommend operational improvements, this work would be incorporated
into the construction works.
Should
sidewalks be present within the work extents, sidewalk ramp retrofits may be
required at the intersections. This is a recent requirement from the
“Accessibility for Ontarians with Disabilities Act” (AODA) which is required
for all major road construction projects across Ontario. The sidewalk ramp
retrofits require iron tactile plates to be installed.
Construction
phasing for this type of work is often project specific depending on the scope
explained above, however in general residents may expect the following
construction phasing:
1. Excavation & Removals
– this will include removing the existing asphalt surface, granular bedding,
curbs & gutters along the street. The common depths of excavation typically
range from 40 to 60cm. On projects where existing servicing requires repairs or
replacement, this will occur at various depths depending on the type of work.
Excavation work can be phased further depending on lengths and depths of
excavation required.
2. Granular Bedding
– once excavation work & underground repairs are complete for a specific
section of road, it is time to install and compact the granular bedding.
3. Concrete Works
– this item may include work for curbs, gutters, catch basins, maintenance
holes and sidewalks.
With the granular bedding in place, wooden form work
is installed in order to pour new concrete curbs and gutters. Where work takes
place in front of driveways, the work will be phased to allow narrowed
vehicular access into your driveway while the concrete formwork stays in place
for 2 to 4 days.
The upper portions of catch basins & maintenance
holes are typically rebuilt simultaneously and are adjusted to the proposed
finished elevation.
Any sidewalk replacements or sidewalk ramp retrofits
that are required are also completed simultaneously while other concrete work
is taking place.
4. Asphalt Surface
– with the previous steps complete, it is time to install the asphalt surface.
This is typically installed in two layers, with the final layer being level
with the curb, gutters, catch basins and maintenance holes.
5. Restoration
– with the asphalt surface in place, it is time for final restoration. This
will include the replacement of topsoil/sod and final clean-up of the job site.
6. Warranty Period
– should any deficiencies happen after construction is complete, the contractor
is responsible for warranty work typically for 1 to 2 years. Town staff monitor
the performance of work during this time period and should residents have any
concerns please notify us during this time period to investigate.
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