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Routine maintenance of roadways is essential, efficient and cost effective to sustain streets in good conditon. The following high-quality maintenance programs are aimed at extending pavement life and improving levels of road serviceability.
For detailed information on road maintenance in your neighborhood, contact the Maintenance Management office at 455-7540.
CONTRACT MAINTENANCE ACTIVITIES
In addition to our own staff efforts, Public Works contracts with outside firms for both routine and specialized pavement maintenance activities. These projects maximize the value of the County's roadway asests by: extending useful life, remediating badly deteriorated roadway sections and by bringing County roadways into compliance with the Americans with Disabilities Act (ADA). Over the past 5 years, more than $57 million in local gas tax monies have been directed toward this effort.
- Slurry seals are mixtures of fine-graded sand and aggregates with quick setting asphalt emulsions. These are typically used on pavements that are 5 to 15 years old to extend the life of pavement by sealing out water and shielding the asphalt from oxidation due to ultraviolet rays. In 2005, this program treated over 1.3 million square yards of pavement at a cost of $1.5 milion.
- Pulverize and pave projects involve grinding up the existing asphalt on older, more deteriorated streets and recycling it as a high-quality base for an new layer of asphalt paving. In 2005, Public Works pulverized and paved over 281,3000 square yards at a cost of over $4.1 million.
- ADA compliance provides wheelchair ramps at intersctions or the replacement of non-conforming intersection wheelchair ramps which do not meet applicable standards. In 2005, Public Works initiated contracts to install more than 322 ADA-compliant ramps ata cost of $440,800.
- Flood Control Maintenance crew's activities are supplemented each year by an annual maintenance contract. The contractor provides equipment and personnel to complete a myriad of activities associated with the Flood Control infrastructure. This includes but is not limited to, inspections, channel debris removal, concrete repair, fence repair and replacement, box culvert cleaning, and detention basin maintenance. Annually, this contract costs approximately $1 million.
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Concrete Reconstruction
This program addresses the repair and replacement of damaged curbs, gutters and sidewalks, as well as the installation of wheel chair ramps in accordance with federal guidelines established by the Americans with Disabilities Act (ADA). To supplement county services, contract may be bid during the year to assist in the completion of concrete reconstruction. |
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Type of project |
In-House |
Contract |
Cost |
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L-Type Curb & Gutter R&R |
880 lf |
993 lf |
$46,517 |
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Sidewalk R&R |
20,650 sf |
1,689 sf |
$156,585 |
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Valley Gutter R&R |
-- |
701 sf |
$9,113 |
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Wheelchair Access Ramp Construction / Maintenance |
11 |
322 |
$455,860 |
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R&R= remove & replace |
sf=square feet
lf=linear feet |
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IN-HOUSE MAINTENANCE ACTIVITIES
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Crack sealing is the application of a liquid asphalt/rubber compound injected into cracks and voids in existing pavement. Pavement life is extended by preventing water and other extreme elements from entering and deteriorating pavement surfaces. In 2005, approximately 190 lane miles of creack sealing was completed at a cost of $285,000.
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Pothole Patching is a process routinely used to repair minor irregularities in pavement surfaces. These irregularities can cause hazardous conditions and, in most instances, require immediate attention. Last year, approximately 192,065 square feet of permanent pothole patching were placed at a cost of $215,265.
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Gravel Roadways are maintained on 610 miles of native soil and gravel roadways in Clark County. The majority of these roadways is located in the rural areas of the county and primarily provides residential access. Gravel roadway grading usually occurs when the surface is eroded to the point where a hazardous or unsafe condition may eventually result. In 2005, those services cost approximately $470,687.
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Street Sweeping is a vital public service that not only improves the appearance of neighborhoods, but also helps prevent air pollution removing street dust that can be circulated by traffic. In the street sweeping process, storm drain inlets are also cleaned. On fully improved paved roads with curb and gutters, Clark County sweeps 2,510 curb miles in the Las Vegas Valley and 207 curb miles in outlying areas using seven mechanical and eleven regenerative air sweepers. Using a mechanical sweeper, 747 lane miles of not-fully improved paved roads with no curb or gutter are also swept throughout Clark County on an as-needed basis.
Sweepers cycle through each respective central valley route in a seven to ten day period. Outlying area routes are covered approximately every 30 days. This results in coverage of approximately 83,070 curb-miles per year, at an estimated cost of $4.75 million. Each sweeper picks up six to eight cubic yards of debris on a regular daily route. That amounts to capturing approximately 20,000 cubic yards of debris a year. As the seasons change from fall to winter, the average volume generally increases four-fold due to foliage droppings into curbs and gutters.
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Snow and Ice Maintenance is necessary in the upper elevations of Clark County in areas such as Mt. Charleston, Kyle Canyon, Columbia Pass, Mountain Springs, and Cold Creek. Snow removal is accomplished using typical road maintenance equipment and two truck plows. In addition, we utilize two rotary snow blowers when snow depth exceeds our capacity to plow, which allows us to provide service with considerably greater efficiency. In 2005, a record snowfall accumulation of 21 feet occurred with 5,667 hours of service provided at a cost of $409,215.
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Weed Control is performed in public right-of-way adjacent to roadways or in the flood control channels. In the 2005 calendar year, 560 acres of flood control channels were treated and another 174 acres in guardrail areas, roadside ditches, medians, and miscellaneous areas.
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