Mehmet Secilmis, GISP Environmental Engineer/GIS Specialist Dewberry Parsippany, NJ

Transcription

1 Bridge Inventory Using GIS City of New Haven, CT Mehmet Secilmis, GISP Environmental Engineer/GIS Specialist Dewberry Parsippany, NJ (973)

2 Introduction City of New Haven needed engineering g services for an inventory and assessment of bridges located within the city limits to develop a program to aid the City in managing its bridge infrastructure resources. The City was open to using new technology, yet not 100 percent sure of what the results would offer.

3 Data Collection The project included an inventory and assessment of all bridges in New Haven which the city either owned or was responsible for maintenance, and the development of aprogram to aid the City in managing its infrastructure resources. This required coordination with the Connecticut Department of Transportation and Railroads to determine ownership details. Historical inspection reports were reviewed prior to scheduling site visits.

4 Site Visits The intent of the site visit was to perform avisual inspection of the various bridge elements to assess the condition. Site visits included photo visual condition inspection. documentation and Bridge location coordinates were collected with GPS units and confirmed with aerial photos.

5 Typical Site Photos

6 Typical Site Photos (Cont d)

7 Two-Page Bridge Summary Report Brief description of the bridge Key map location Age Photograph General condition assessment/evaluation Recommendations e o for maintenance/repairs/replacement a epa ep ace e t Cost estimate for replacement/rehabilitation Potential funding sources and grants

8 Bridge Summary Report (Cont d)

9 Quarterly Bridge Report

10 Bridge Inventory Database Site No. Bid Bridge ID (BIN) Route Carrying Route Crossing Moveable Bridge Over Waterway Over Railroad Over Roadway Over 20 Feet Owned by Maintenance Agency Inspection Agency Bridge Type Org. Const. Date (year) Major. Rehab. Date (year) Prev. Insp. Date Prev. Inspected by Condition of Bridge Description Condition of Bridge Rating (1 9) X Y Elevation (ft) Photos Link (or ID) Summary Report Link Follow Up Flags

11 Prioritization of Bridge Conditions

12 Bridge Locations on Aerial Photo

13 Incorporating with Survey Data

14 City of New Haven Inventory and Assessment in action showing how the program lines the various pieces of information required to provide the City of New Haven a thorough bridge evaluation.

15 Conclusions GIS (Geographic Information System) was used to store, manipulate and analyze the data collected for the inventory and assessment. ArcGIS was utilized to assess and analyze the field data collected at each bridge. GIS integrated and inter-relatedrelated geographic data (including locations, land use, municipal boundaries, natural resource data and aerial photos) with database information. Users view and analyze the inter-related related data in a way that would be impossible by studying stand- alone maps and spreadsheets. Statistical data was collected, evaluated, and presented which illustrated how the City of New Haven s bid bridge infrastructure matched up to other peer cities in the state.

16 Conclusions Delivering the report and recommendations in a GIS digital map format enabled the City to click through to digital photography and access the key data for each bridge. Quarterly reports are filled out by the Engineering Department for each of the red flagged bridges in the initial evaluation. This innovative process keeps the Mayor s office up-to to-date on the state of these bridges, and makes the inventory a living document.

17 Conclusions Open communication combined with the City s willingness to be forward thinking resulted in the use of technology to generate a live final document that will not only assist them in maintaining their bridge program but will also allow atie-inin to future transportation projects. As noted by City Engineer, Richard Miller, PE, it is viewed as a useful tool for the City to ensure these critical bridges are managed in a forward thinking and planned effort to ensure safe and reliable transportation linkage over time.

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