2006 GIS-T T Symposium Columbus Ohio

Transcription

1 2006 GIS-T T Symposium Columbus Ohio Paving the Way to a Robust GIS Managing countywide transportation asset data in St. Johns County, Florida

2 County Objectives Complete and accurate inventory of transportation and stormwater assets What and where? Asset condition assessments Enterprise information management Solution to manage assets Maintenance & repair Reporting Analysis

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4 County Vision Improved maintenance operations Proactive maintenance Systems integration

5 Scope of project Geodatabase design Data creation/collection Condition assessment Asset management solution evaluation Solution implementation Go Live

6 Planning Design Database Conceptual and physical geodatabase designs Data maintenance procedures

7 Asset Inventory Parameters

8 Conceptual Database Design

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10 Planning Develop procedures Field inventory Condition assessment Field and office QA/QC

11 Legacy databases Pavement management Signs and traffic signals Work orders Warehouse inventory Light poles Existing GIS data

12 Data Acquisition Office data collection Asset inventory and condition assessment - Pavement - Transportation assets - Stormwater system

13 Data Collection Technologies Orthophotography data extraction Windshield pavement surveys Video van data collection Field data collection

14 Infrastructure Inventory & Condition Survey Office Work Extract visible stormwater features Review and QA/QC road network topology Assign Functional Classification Segmentation Extract number of lanes, width, turn lanes, etc

15 Pavement Inventory & Condition Survey Observe Distress Type Alligator Cracking Longitudinal / Transverse Cracking Block Cracking Depressions Patching / Utility Cuts Weathering / Raveling

16 Pavement Inventory & Condition Survey Identify Distress Severity High/medium/low Estimate Distress Extent 1 to 100%

17 Pavement Inventory & Condition Survey

18 Camera Power

19 Street Sign/Signal Inventory

20 Street Sign/Signal Inventory Estimated 40,000 sign records X, Y, Z coordinate locations gathered Condition Assessment: good/fair/poor Description (ie, stop sign ) Support structure type: pole/bridge mount/signal mount/guardrail mount Route name using County-provided street centerline database

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22 Condition Assessment Guidelines Signs Structural Condition - Good - Fair - Poor Reflectivity - Measure - Estimate Good Fair Poor

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24 Guardrail Inventory

25 Guardrail Inventory GPS locations indicating the beginning and end of guardrails Route Digital image Type: Two/three-tier guardrail Handrail Attenuator Condition based on County provided sample images of guardrails: Good/fair/poor

26 Sidewalk Inventory

27 Sidewalk Inventory GPS coordinate location for beginning and end point excluding driveways Route Digital image Type: Asphalt/concrete Condition based on County provided sample images of sidewalks: Good/fair/poor

28 GPS Coordinate Survey Result

29 Storm System Field Inventory From orthophotography: Ditches Ponds RTD GPS: Closed stormwater Culverts

30 Orthos data extraction

31 Condition Assessment Guidelines Stormwater Infrastructure Functional Condition - Good - Fair - Poor - Unknown Structural Condition - Good - Fair - Poor - Unknown

32 Condition Assessment Guidelines

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34 Asset Management Asset Management Solutions Evaluation Develop Functionality Matrix Evaluate options and develop recommendation

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37 Challenges Complex relationships Assets and support structures Traffic signals and equipment Pavement segmentation and attribution Field data collection Windshield pavement survey Image integration Link to asset record Time-stamped snapshot

38 Questions?