City of Houston City of Houston Street Surface Assessment Vehicle Presented to the Flooding &...
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![Page 1: City of Houston City of Houston Street Surface Assessment Vehicle Presented to the Flooding & Drainage Committee Eric K. Dargan – Deputy Director.](https://reader030.fdocuments.in/reader030/viewer/2022033107/56649c895503460f94941d83/html5/thumbnails/1.jpg)
City of Houston Street Surface Assessment Vehicle
Presented to the Flooding & Drainage Committee
Eric K. Dargan – Deputy Director
![Page 2: City of Houston City of Houston Street Surface Assessment Vehicle Presented to the Flooding & Drainage Committee Eric K. Dargan – Deputy Director.](https://reader030.fdocuments.in/reader030/viewer/2022033107/56649c895503460f94941d83/html5/thumbnails/2.jpg)
Pavement Assessments for Roadways in the City of Houston
• Pavement Condition Rating (PCR)
• Usage of PCR scores
• 1999-2001 IMMP (Infrastructure Maintenance Management Program)
![Page 3: City of Houston City of Houston Street Surface Assessment Vehicle Presented to the Flooding & Drainage Committee Eric K. Dargan – Deputy Director.](https://reader030.fdocuments.in/reader030/viewer/2022033107/56649c895503460f94941d83/html5/thumbnails/3.jpg)
Typical Roadway Problems
ALLIGATOR CRACKING
TRANSVERSE CRACKING
RAVELLING
RUTTING
![Page 4: City of Houston City of Houston Street Surface Assessment Vehicle Presented to the Flooding & Drainage Committee Eric K. Dargan – Deputy Director.](https://reader030.fdocuments.in/reader030/viewer/2022033107/56649c895503460f94941d83/html5/thumbnails/4.jpg)
Typical Roadway Problems
LONGITUDINAL CRACKING
JOINT SEAL
CONCRETE CRACKS
SLAB REPLACEMENT
![Page 5: City of Houston City of Houston Street Surface Assessment Vehicle Presented to the Flooding & Drainage Committee Eric K. Dargan – Deputy Director.](https://reader030.fdocuments.in/reader030/viewer/2022033107/56649c895503460f94941d83/html5/thumbnails/5.jpg)
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
![Page 6: City of Houston City of Houston Street Surface Assessment Vehicle Presented to the Flooding & Drainage Committee Eric K. Dargan – Deputy Director.](https://reader030.fdocuments.in/reader030/viewer/2022033107/56649c895503460f94941d83/html5/thumbnails/6.jpg)
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
![Page 7: City of Houston City of Houston Street Surface Assessment Vehicle Presented to the Flooding & Drainage Committee Eric K. Dargan – Deputy Director.](https://reader030.fdocuments.in/reader030/viewer/2022033107/56649c895503460f94941d83/html5/thumbnails/7.jpg)
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
![Page 8: City of Houston City of Houston Street Surface Assessment Vehicle Presented to the Flooding & Drainage Committee Eric K. Dargan – Deputy Director.](https://reader030.fdocuments.in/reader030/viewer/2022033107/56649c895503460f94941d83/html5/thumbnails/8.jpg)
Technical Components of the Street Surface Assessment Vehicle
CrackScope 360 degree camera
GPS Unit
Road Profiler
Distance Measuring Instrument
![Page 9: City of Houston City of Houston Street Surface Assessment Vehicle Presented to the Flooding & Drainage Committee Eric K. Dargan – Deputy Director.](https://reader030.fdocuments.in/reader030/viewer/2022033107/56649c895503460f94941d83/html5/thumbnails/9.jpg)
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
![Page 10: City of Houston City of Houston Street Surface Assessment Vehicle Presented to the Flooding & Drainage Committee Eric K. Dargan – Deputy Director.](https://reader030.fdocuments.in/reader030/viewer/2022033107/56649c895503460f94941d83/html5/thumbnails/10.jpg)
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
![Page 11: City of Houston City of Houston Street Surface Assessment Vehicle Presented to the Flooding & Drainage Committee Eric K. Dargan – Deputy Director.](https://reader030.fdocuments.in/reader030/viewer/2022033107/56649c895503460f94941d83/html5/thumbnails/11.jpg)
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
![Page 12: City of Houston City of Houston Street Surface Assessment Vehicle Presented to the Flooding & Drainage Committee Eric K. Dargan – Deputy Director.](https://reader030.fdocuments.in/reader030/viewer/2022033107/56649c895503460f94941d83/html5/thumbnails/12.jpg)
Council Districts & SSAV Data
COUNCIL DISTRICT
TOTAL SSAV MILES COMPLETE
A 413B 533C 178D 346E 724F 52G 208H 656I 471
![Page 13: City of Houston City of Houston Street Surface Assessment Vehicle Presented to the Flooding & Drainage Committee Eric K. Dargan – Deputy Director.](https://reader030.fdocuments.in/reader030/viewer/2022033107/56649c895503460f94941d83/html5/thumbnails/13.jpg)
20 Worst Scored Thoroughfare Street Sections in the City
Key Map
Council District
Street Name From Block
To Block
Potholes Observed
Overall PCR Score
Miles Driven
492M G SHEPHERD DR 300 1399 52 50.607 0.503453P, T, X H AIRLINE DR 1700 2999 76 50.63 1.821535F, K I BROADWAY ST 1900 2699 31 50.71 1.044494N H SAMPSON ST 100 1099 37 52.06 0.606493L I PRAIRIE ST 700 1299 4 53.26 0.27494N H N SAMPSON ST 1 299 22 53.46 0.278
576K,L,P E S SHAVER ST 4900 4905 27 54.07 1.062493V, U I DOWLING ST 1950 2599 49 54.2 0.61
452X A ELLA BLVD 1700 1999 16 54.26 0.317493H, 494H B LORRAINE ST 2000 2849 15 54.41 0.349
494C, D B, H WALLISVILLE RD 5600 6499 70 54.58 1.225533D D CULLEN BLVD 3534 3899 56 54.82 0.63492Y D S SHEPHERD DR 3600 3999 5 55.12 0.28
532K, P C BUFFALO SPDWY 7900 9499 29 55.13 1.767532K,L,N,P C S BRAESWOOD BLVD 2490 4199 144 55.2 3.424
493T, X D, I ALABAMA ST 900 1499 15 55.59 0.803534L I S WAYSIDE DR 3800 4999 15 55.76 0.55493J D W DALLAS ST 2400 2909 6 55.98 0.258616B E HUGHES RD 10418 11175 11 56 1.391
453Z, 454W H COLLINGSWORTH ST 1700 2799 18 56.86 0.048