Agenda - Council - 03/10/2009 - Laserfiche WebLink

Home

BACKGROUND Routine: maintenance is the most economical method for safeguarding the public investment in bituminous paved streets The bituminous street surfa e s eal {ens a s result the of as nli exposure, precipitation, freeze /thaw cycles and traffic. loading, Once water is able to components of the bituminous became brittle avem pavement susceptible cracking. deteriorates s atan accelerating pace, To penetrate surface cracks into the road , p is the .goal of the City to address the preventative maintenance avoid this rapid deterioration, it needs of its street system on a perio dic bans. The g oal of sealcoating is to restore the imperviousness of the pave sealcoating also adds skid d pavement oxidation retains the flexibility of bituminous pavernen no longer flexibility of the resistance as a secondary benefit. Unlike sea to the pavement structure as well as a like bituminous, an overlay provides additional ve st new surface. Streets receive; a bituminous overlay when they are able to benefit from a sealcoating operation. construction and rn4tintenanco history o the pavements prnposec� for the 2gQ9 Street The eons '009 progra consists or' seven Maintenance Program is presented In Appendix A Tho Fxvjcctd 09- Individual projects addressing the maintenance needs an 16.76 miles o f City streets, 3 receded 01 through 09-lU which covers 1,5.02 miles of City, rillneheiProjectsl09.11 and 09 -12 by scaling of cracks havin g widths which exceed cl. which involve 1,78 miles of street, will receive a one and on �� seaieoat ng s l .74 overlay miles of existing bituminous pavement. The 2009 program include MSA street. streets have Project 08 -01 involves the first sealcoating of recently constru fir t sealcoat streets. be ng rov provided by a J been grouped into a single project because funding fortis developer escrow at the time these stree were f There sealcoatin str ets which have associated with this project. Projects 09 02 and 09-09 consist o ew been overlaid between 1997 and 2004, These projects n i� n �C �� Prod'ect 09•10�s comprnse assessment policy for sealcoats explained in the section o of se menu of Alpine Blvd, Riverdale blvd, Ramsey Blvd., and 161" Avenue, These are all g 1v1SA streets which do not have the typical frontages densities alo found in the average subdivisions This project will assess the properties fro g g scalcoating assessment in accordance with Assessment Policy No 7. d by Projects, 09 -11 and 09.12, are bit overlay projects The avemn t distress � e sizes ad will be asscsscd per unit, rtthese subdivision or y projr i ts indicate n that additional pavem nt strength is needed, proposed overlay pxaJec —157—