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City of Houston City of Houston Street Surface Assessment Vehicle Presented to the Flooding & Drainage Committee Eric K. Dargan – Deputy Director.

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Presentation on theme: "City of Houston City of Houston Street Surface Assessment Vehicle Presented to the Flooding & Drainage Committee Eric K. Dargan – Deputy Director."— Presentation transcript:

1 City of Houston City of Houston Street Surface Assessment Vehicle Presented to the Flooding & Drainage Committee Eric K. Dargan – Deputy Director

2 Pavement Assessments for Roadways in the City of Houston Pavement Condition Rating (PCR) Usage of PCR scores IMMP (Infrastructure Maintenance Management Program)

3 Typical Roadway Problems ALLIGATOR CRACKING TRANSVERSE CRACKING RAVELLING RUTTING

4 Typical Roadway Problems LONGITUDINAL CRACKING JOINT SEAL CONCRETE CRACKS SLAB REPLACEMENT

5 IMMP IMMP program – Evaluated by individuals IMMP PCR Score Factors: Flushing Surface Deterioration Faulting Slab cracking* Slab Replacements* Ride Condition (*concrete only) Rutting Raveling Alligator Cracking Transverse Cracking Longitudinal Cracking Joint Seal Present Patching

6 Overview of the Street Surface Assessment Vehicle (SSAV) Procured from Idea Integration, Inc. in August 2008 Data testing began July 2009 Full production began May 2010 Assessments are anticipated to occur every 2-3 years Estimated 5-year system life = 3 Assessments

7 Assessment Costs Contract rate per assessment - $1.7M (no video) PWE Annual Total Operational Cost - $590k (includes video collection) 3 Assessments over 5 years = $5.21M contract cost vs. $2.95M internal costs Possible future partnerships with other area agencies may recoup some costs

8 Technical Components of the Street Surface Assessment Vehicle CrackScope360 degree camera GPS Unit Road Profiler Distance Measuring Instrument

9 SSAV Capabilities Assesses asphalt/concrete roads in clear weather Measures distance traveled only (center-line miles) Does not currently identify or “asset tag” any items Program relies on machines and specific software to create a more consistent PCR score For a road section, 100 is the starting value. Three reductions bring the PCR to its final number. –IRI or ‘roughness’ deduction –Rutting deduction –Cracking deduction

10 What Happens Next? Upcoming Completion Schedule –11/30/2010 – 56% –12/31/2010 – 62% –03/30/2011 – 82% –06/30/2011 – 100% Video capture is being used for identification of key items Actual completion time depends on the ability for the van to be on the road

11 How Will We Use This Data? To guide and expand maintenance programs –Overlay program –Concrete repairs Primary factor for development and scheduling capital projects for streets

12 Council Districts & SSAV Data COUNCIL DISTRICT TOTAL SSAV MILES COMPLETE A413 B533 C178 D346 E724 F52 G208 H656 I471

13 20 Worst Scored Thoroughfare Street Sections in the City Key Map Council District Street NameFrom Block To Block Potholes Observed Overall PCR Score Miles Driven 492MGSHEPHERD DR P, T, XHAIRLINE DR F, KIBROADWAY ST NHSAMPSON ST LIPRAIRIE ST NHN SAMPSON ST K,L,PES SHAVER ST V, UIDOWLING ST XAELLA BLVD H, 494HBLORRAINE ST C, DB, HWALLISVILLE RD DDCULLEN BLVD YDS SHEPHERD DR K, PCBUFFALO SPDWY K,L,N,PCS BRAESWOOD BLVD T, XD, IALABAMA ST LIS WAYSIDE DR JDW DALLAS ST BEHUGHES RD Z, 454WHCOLLINGSWORTH ST

14 Questions?


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