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Would it be useful to import data from the US FHWA National Bridge Inventory? They have data on every single bridge in the US. Some of the data attributes line up with current bridge properties, while other data points would create new properties. Data can be found at http://www.fhwa.dot.gov/bridge/nbi/ascii.cfm The data has the following data attributes: State Code Structure Number Inventory Route Record Type Route Signing Prefix Designated Level of Service Route Number Directional Suffix Highway Agency District County (Parish) Code Place Code Features Intersected Features Intersected Critical Facility Indicator Facility Carried By Structure Location Inventory Rte, Min Vert Clearance Kilometerpoint Base Highway Network Inventory Route, Subroute Number LRS Inventory Route Subroute Number Latitude Longitude Bypass/Detour Length Toll Maintenance Responsibility Owner Functional Class Of Inventory Rte. Year Built Lanes On/Under Structure Lanes On Structure Lanes Under Structure Average Daily Traffic Year Of Average Daily Traffic Design Load Approach Roadway Width Bridge Median Skew Structure Flared Traffic Safety Features Bridge Railings Transitions Approach Guardrail Approach Guardrail Ends Historical significance Navigation Control Navigation Vertical Clearance Navigation Horizontal Clearance Structure Open/Posted/Closed Type Of Service Type of Service On Bridge Type of Service Under Bridge Structure Type, Main Kind of Material/Design Type of Design/Construction Structure Type, Approach Spans Kind of Material/Design Type of Design/Construction Number Of Spans In Main Unit Number Of Approach Spans Inventory Rte Total Horz Clearance Length Of Maximum Span Structure Length Curb/Sidewalk Widths Left Curb/Sidewalk Width Right Curb/Sidewalk Width Bridge Roadway Width Curb-To-Curb Deck Width, Out-To-Out Min Vert Clear Over Bridge Roadway Minimum Vertical Underclearance Reference Feature Minimum Vertical Underclearance Min Lateral Underclear On Right Reference Feature Minimum Lateral Underclearance Min Lateral Underclear On Left Deck Superstructure Substructure Channel/Channel Protection Culverts Method Used To Determine Operating Rating Operating Rating Method Used To Determine Inventory Rating Inventory Rating Structural Evaluation Deck Geometry Underclear, Vertical & Horizontal Bridge Posting Waterway Adequacy Approach Roadway Alignment Type of Work Type of Work Proposed Work Done By Length Of Structure Improvement Inspection Date Designated Inspection Frequency Critical Feature Inspection Fracture Critical Details Underwater Inspection Other Special Inspection Critical Feature Inspection Dates Fracture Critical Details Date Underwater Inspection Date Other Special Inspection Date Bridge Improvement Cost Roadway Improvement Cost Total Project Cost Year Of Improvement Cost Estimate Border Bridge Neighboring State Code Percent Responsibility Border Bridge Structure Number STRAHNET Highway Designation Parallel Structure Designation Direction Of Traffic Temporary Structure Designation Highway System Of Inventory Route Federal Lands Highways Year Reconstructed Deck Structure Type Wearing Surface/Protective System Type of Wearing Surface Type of Membrane Deck Protection AVERAGE DAILY TRUCK TRAFFIC DESIGNATED NATIONAL NETWORK PIER/ABUTMENT PROTECTION NBIS BRIDGE LENGTH SCOUR CRITICAL BRIDGES FUTURE AVERAGE DAILY TRAFFIC YEAR OF FUTURE AVG DAILY TRAFFIC MINIMUM NAVIGATION VERTICAL CLEARANCE VERTICAL LIFT BRIDGE FEDERAL AGENCY INDICATOR Washington Headquarters Use STATUS with 10yr rule Asterisk Field in SR SUFFICIENCY RATING (select from last 4 positions only) |
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Please read http://wiki.openstreetmap.org/wiki/Import/Guidelines first, further there is a US specific import list https://lists.openstreetmap.org/listinfo/imports-us that should be adressed too. To the data itself, some of it would seem to be useful for OSM (for example clearance) and a lot not. As so often is such cases the best use woud likely be as reference material for QA. |
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Not a small or easy task! Only a small subset of those fields would even possibly belong in OSM, you'd have to make sure you used the right OSM tags for them, and you'd have to be very careful to match NBI data with the correct OSM bridge features, if they exist. To add to the complexity, there's not only bridge=* tags, but also the man_made=bridge tagging scheme, and bridge relations. Could be a good MapRoulette task, but I'd recommend you start with the talk-us mailing list, and see if anyone's been working on it already. For example, @mvexel wrote this blogpost about US bridges a few years ago. |
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Ryan_C yes its great to do so. -ask the local community first since theres a lot of extra work if theres a green light. -handsome are clearances but the list is hugh so there has to be a selection to decide what should ? -the Wiki about bridges is not this big, so that should be corrected as well, before you import it. |
