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

1

2

3

4

5

6

7

8

9

10

0 5 10 15 20 25 30 35 40

Year

PA

SE

R R

atin

g

• $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

1

2

3

4

5

6

7

8

9

10

0 5 10 15 20 25 30 35 40

Year

PA

SE

R R

atin

g

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

0%

20%

40%

60%

80%

100%

2011 2012 2013 2013 2013

Year

% o

f T

ota

l L

an

e M

iles

Poor

Fair

Good

Asset Management Education

Auburn Hills - $1M Per Year Investment Reconstruction Only

0%

20%

40%

60%

80%

100%

2011 2012 2013 2014 2015

Year

% o

f T

ota

l L

an

e M

iles

Poor

Fair

Good

Asset Management Education

Average Paser Rating

5.0

5.5

6.0

6.5

7.0

7.5

8.0

2011 2012 2013 2014 2015

Year

PA

SE

R R

ati

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.