The Vermont Agency of Transportation (VTrans) is responsible for the maintenance of a large, complex drainage system composed of culverts, drop inlets and access holes. Deterioration of these hidden assets poses potential safety hazards to the traveling public though roadway sinkholes and side slope instability caused by drainage erosion.
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Traditionally, VTrans has maintained a well-developed program as part of the National Bridge Inventory System (NBIS) to address culverts 72\\u201d or greater in dimension. The Small Culvert Inventory (SCI) was designed as a compliment to that program intended to locate and catalog all state-owned culverts less than 72\\u201d in diameter. However, to ensure that there are no culverts that fall between the NBIS and the SCI, the SCI will inventory all culverts with a measured internal dimension equal to 72\\u201d. The inventory of these structures assesses their location, composition, asset condition and local site conditions. The SCI provides the framework for continued monitoring and condition assessments in the future providing the ability to prioritize maintenance, repairs and replacements.
At the current point in the program\\u2019s maturity, the Agency has collected the initial inventory of culvert data across the state and the focus has shifted from collection of new data to the maintenance and improvement of existing data. At present, the Maintenance Division aims to reinspect all known culverts every 5 years, or roughly 20% of state-owned culverts every year. Inspections are predominantly accomplished using mobile devices with accuracy of 15 ft or better. For culverts that are difficult to access due to configuration (closed system - i.e. drop inlets) or other contextual constraints, Maintenance Division may employ specialized devices, including, but not limited to Utility cameras, 1/10 scale remote controlled off the shelf vehicles retrofitted with cameras (Hydraulic Inspection Vehicle Explorer or HIVE), or purpose-built culvert inspection solutions such as those configured by iPEK.
Data is scheduled to update daily.
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For reference use only. Data does not represent a legal description of VTrans' assets. Disclaimer: Users must assume responsibility in determining the usability of this data for their purposes. Digital maps retain the accuracy of their source materials. With respect to documents available from this server (map service), neither the State of Vermont nor any of its employees make any warranty, express or implied, including the warranties of merchantability and fitness for a particular purpose, or assumes any legal liability or responsibility for the accuracy, completeness, or usefulness of any information, apparatus, product, or process disclosed, or represents that its use would not infringe privately owned rights. Users should use caution when overlaying other data sets and should not make legally binding decisions from this data. To avoid the risk of misinterpretation, invalid results, and erroneous conclusions, users must consider original map scale, collection methodology, currency of data, and any other conditions specific to every data element and each dataset as a whole. Potential users are advised to consult with VTrans to gain an understanding of the inherent limitations of this data set and its scope of inference. Also, the user must be aware that errors and conditions originating from physical sources involved in developing a dataset may be reflected in the data and that the digital processing performed during preparation, storage, and transmission of the dataset may have exacerbated such errors and/or introduced additional ones.