"The United States transportation system is the envy of the world." - Jerry Costello

Street Management - Street Preservation Program

 

Engineering | Design | Inspection | Street Management | Construction Projects


Pavement Management System | Street Preservation Program | Street Reconstruction


Street Preservation Program

Leawood's street preservation programs are a system of maintenance practices that extend the life of the pavements. The life of a pavement is influenced by many factors including thickness, type of pavement, weather, traffic volume, number of large vehicles, and frequency of maintenance.

Leawood's street preservation programs are used to maintain or restore paved road surfaces, add structural capacity, and improve riding comfort, and skid resistance.  While newly overlaid roads are aesthetically pleasing, roads are not overlaid to improve appearance.  
 Scheduled maintenance programs include:

  • Crack sealing: applying asphalt rubber into the crack to seal it and prevent water from getting into the street.

  • Curb Replacement: replace offset, damaged, or deteriorated curb, prior to a slurry seal.

  • Slurry Seal: a thin layer of aggregate, oil and asphalt binders are mixed together and spread over the existing pavement.

  • Overlay: milling off the top 1.5 to 2 inches of the street and replacing it with fresh asphalt to seal and revitalize the street.

  • Reconstruction: the complete removal and replacement of the pavement, stormsewer, curbs, drive approach and sidewalks (where applicable).

Streets included in our annual resurfacing projects are carefully evaluated and inspected under the guidelines of our Pavement Management Program. Other repairs are made based on reports of problems from residents.

If you have questions regarding the City's pavement management program or the priorities for pavement programs contact the Public Works Engineering Division office at (913) 339-6700, ext. 145.

Crack Sealing                      
 

Crack SealAsphalt pavement by design is flexible to accommodate the freeze/thaw cycles of our climate. Subsequently, cracking will occur in relatively new pavement and continue throughout its life due to age, traffic, weather, etc. Crack "sealing" is the placement of a rubberized sealant in the crack that will provide a protective coating and seal out water. If the cracks are not maintained, the cracks can ravel and increase in size. Crack sealing is the most
common maintenance option used to help protect the pavements integrity. It is often placed in advance of overlays and surface treatments to improve performance.

In addition to proper material preparation and application, a critical step in crack preparation is cleaning and drying the crack. After the cracks are cleaned and dried, using hot compressed air, they are filled with liquid asphalt emulsion. Excess sealant is leveled off at the surface using a squeegee. The air temperature during application should be 32 degrees Fahrenheit and rising. The best time to seal cracks is during the cooler winter months when the cracks are the widest (October-March).  

 

Curb replacementCurb Replacement
In advance of the annual slurry seal program, Public Work crews repair deteriorated curbs. For curb problems not included in the slurry seal program, you may contact the Maintenance Division at (913) 681-6902.



Slurry Seal

Slurry Seal

Slurry seal is a surface treatment designed to extend the life of existing pavements by filling surface cracks and voids, sealing weather tight, and adding texture and
uniform appearance to the street. Slurry Seal uses pre-mixed slurry of rock, polymer asphalt binders, cement, and filler materials to seal the entire roadway at a depth of less than 1/4inch. Slurry Seal requires 4-6 hours to setup before traffic can drive over it, but it takes in excess of 48 hours before it is completely cured. Immediately following application of the slurry seal, vehicles are not allowed on the new surface. Once the street has been reopened, traffic and large vehicles, such as garbage trucks, may leave scuff marks on the surface, this is normal, and as more traffic drives over the surface these marks will flatten out and the surface should appear uniform. 
In addition, there may be small surface rocks that will roll off into the gutter. This is also normal, and contractor will sweep up the excess aggregate within 2 weeks following the completion of the project.  


Overlay

OverlayDuring an overlay project, residents must remove all vehicles from the street. If curb is present the old pavement will be milled along each edge so that when the overlay is applied the surface of the new pavement will be aligned with the gutter. The street is then sprayed with a thin layer of asphalt called a tack coat to ensure the new pavement will adhere to the old pavement. Once the overlay is applied, it would be ideal for traffic to be kept off the new pavement for at least four (4) hours. However, traffic may travel on a newly paved roadway after it has been rolled. Sharp turning movements on the new surface must be avoided until the pavement has had a chance to cure. Operations are performed to ensure at least one lane of traffic remains open at all times. 



Reconstruction

Reconstruction

Reconstruction projects require close cooperation between the City and residents due to the complete removal of the pavement and adjacent infrastructure. Click here for more information on Street Reconstruction.

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