US Bicycle Routes

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The goal of The United States Bicycle Route System is to connect America through a network of numbered interstate bicycle routes. Nationally close to 9,000 miles have already been established. The map below shows the USBRS as it stands in…

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An Introduction to Leaflet

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  • Post category:GIS

Thanks so much to OGRIP for giving OVRDC the chance to share our experiences utilizing the Leaflet javascript web mapping library at the 2015 Ohio GIS Conference. Below are links to the pdf, online and zipped versions of the presentation. The…

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The State of Our Bridges

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The Bridge Sufficiency Rating is an indexed value that takes into account a variety of factors including physical inspection of the bridge, traffic, number of lanes, etc. The result is a percentage comparing the current conditions of the bridge to…

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Pavement Condition Ratings

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As part of the RTPO planning process, we examined roadway conditions in our region using the Pavement Condition Rating. The PCR takes into account both the frequency and severity of various distresses present in the roadway such as cracking, potholes,…

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PCR Map

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ODOT measures roadway conditions through an indexed measurement called the Pavement Condition Rating (PCR). The PCR takes into account a variety of factors such as cracking, potholes, etc. A PCR rating of 65 or below highlights the need for roadway…

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Image Overlay Map

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Leaflet provides the capability to overlay an image on a map. This is done by setting the southeast and northwest bounds of the image. For this example the image was first georeferenced and rectified in ArcMap. The bounds were found…

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