Presentation on theme: "City of Auburn Hills Road Asset Management Program February 21, 2014 SEMCOG University."— Presentation transcript:
City of Auburn Hills Road Asset Management Program February 21, 2014 SEMCOG University
BACKGROUND Auburn Hills Road Network –Approx. 180 lane miles of roadway –128 lane miles of asphalt or sealcoat –50 lane mile of concrete –2 lane miles of gravel Began road maintenance program in 1996 Annually prepare a rolling 5-year road maintenance plan Combination of asphalt & concrete rehabilitation Heavy rehab/recon when necessary – leverage funding Annual investment of $750k to $3.5M Complete some maintenance “in-house” PASER road ratings done every 3 years Continually evaluate & update plan to adjust as needed
$2.65/syd/year over life of pavement – 36 years Average condition rating = 7
$3.30/syd/year over life of pavement – 36 years Average condition rating = 6
Road Asset Management Plan Review and/or Collect PASER data (3 year cycle) Update RoadSoft Database Review performance of recent maintenance work Coordinate with other AMP’s (water, sewer, etc.) Confirm road selection priorities & adjust as needed Select maintenance techniques for target roads Determine costs for selected maintenance fixes Refine plan based on budget considerations Prepare yearly plan worksheets, maps, etc. Finalize report and recommendations
CHIP SEAL CONSIDERATIONS Seals pavement surface Improves surface friction Loose aggregate chips & dust after application “Rough” surface may not be desirable in certain locations Aesthetics – color is same as aggregate chips 2 nd course can be applied for added structure – “double chip” Approx. cost - $2.50/syd
SLURRY SEAL CONSIDERATIONS Seals pavement surface Fills small cracks Improves surface friction “Rough” surface may not be desirable in certain locations Aesthetics – mottled appearance after weathering Traffic control and set time Heavy traffic (especially turning) can scuff surface Approx. cost - $3.00/syd
CAPESEAL CONSIDERATIONS Combination of chip & slurry Provides additional structure, not as much as HMA overlay Final surface is “rougher” than traditional HMA, may not be desirable in certain locations Aesthetics – mottled appearance after weathering Traffic control and set time Can apply “double chip” to increase structure & fill areas Performs well to seal cracks and provide “new” road surface Approx. cost - $5.50/syd
MICROSURFACING CONSIDERATIONS Seals pavement surface Improves surface friction Fills small cracks No aesthetic issues – looks like HMA Not good for hand work – best on mainline Quick set time reduces traffic control Need to do a large quantity to be cost effective Approx. cost - $4.00-$7.00/syd
THIN OVERLAY CONSIDERATIONS ¾” to 1 ½” HMA overlay Provides additional structure Existing pavement can be milled or left as is Provides smooth new pavement surface Reflective cracking is an issue Surface preparation (crack seal/repairs) critical Approx. cost - $6.00-$7.00/syd
CONC PATCHING CONSIDERATIONS Address deteriorated joints Address cracked, broken, vaulted slabs Improves ride quality Underlying base issues can & need to be addressed 30” joint repairs – transverse & longitudinal Can do full depth or partial depth repairs Smaller repair areas cost more/syd than larger areas Significant traffic control for removal, placement, & cure Approx. cost - $60.00/syd of repair area
CRACK/SEAT/OVERLAY CONSIDERATIONS Existing concrete is fractured in preparation for HMA overlay Provides new pavement surface Can do base repairs to address underlying issues Joint/crack prep needed before overlay Should be used when concrete is deteriorated beyond where patching is cost-effective Reflective cracking can be an issue Can do “edge milling” – otherwise raises pavement grade Can maintain traffic throughout construction Approx. cost - $35.00/syd for 3” overlay
CONCRETE OVERLAY CONSIDERATIONS New 4” to 6” concrete surface placed over existing pavement Provides new pavement surface Can do base repairs to address underlying issues Joint/crack prep done before overlay HMA or geosynthetic “bond breaker” Roadway grade is raised, impacts to driveways, side streets, sidewalks, drainage structures, etc. Significant traffic control needed Approx. cost - $50.00/syd for 4.5” overlay
“In-House” Maintenance Utilize DPW crews for maintenance activities –Overband Crack Seal –HMA Patching Saves costs on design, bidding, contract administration Complete prep work the year ahead of contractor planned work Saves costs on subcontracting Improved responsiveness to address complaints Training
Contracted Road Programs Annual Asphalt Maintenance Project Annual Concrete Maintenance Project Road Reconstruction Projects Funded projects let through MDOT Maintenance projects are done “Log” style
Asset Management Education Public Education Information Meetings Educate/Inform Elected Officials Public Notices Prior to Construction Updates During Construction Feedback on Performance After Completion
Lessons Learned Match the right maintenance treatment to the right roadway. There is no “Silver Bullet” Determine if there are underlying base issues before using surface treatments. Don’t put lipstick on a pig. Don’t be afraid to try new things. It’s good to have a lot of tools in the toolbox. “In-house” maintenance can be combined with contract work to reduce costs. Education with elected officials & the public is essential to a successful asset management program.
Lessons Learned Know where the elected officials live. That way you can understand the complaints & help with PR. Consider the uses of the roadway and aesthetic desires of the area when selecting maintenance treatments. Leverage funding opportunities whenever possible, but continue to invest in the road network. Coordinate roadway asset management plan with other utilities as much as possible. Continually monitor the roadways, including those that were just maintained to track performance.
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