city of auburn hills road asset management program february 21, 2014 semcog university
TRANSCRIPT
City of Auburn Hills Road Asset Management Program
February 21, 2014SEMCOG 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
DETERIORATION CURVE
Life Cycle Curve - Mix of Fixes
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• $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
Life Cycle Curve - No Maintenance
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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
Road Asset Management Plan
CHIP SEAL
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• 2nd course can be applied for added structure –
“double chip”• Approx. cost - $2.50/syd
SLURRY SEAL
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
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
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 HMA OVERLAY
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
CONCRETE PATCHING/JOINT REPAIR
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
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
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
Asset Management Education
Auburn Hills - $1M Per Year Investment
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2011 2012 2013 2013 2013
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Good
Asset Management Education
Auburn Hills - $1M Per Year Investment Reconstruction Only
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Asset Management Education
Average Paser Rating
5.0
5.5
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8.0
2011 2012 2013 2014 2015
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ng 525k
1M
2M
1M Recon
2M Recon
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.