20250224
13441300
1.0
FALSE
Inaccessible_All_Merge_Web_Redo_121024_single
002
Projected
GCS_WGS_1984
Linear Unit: Meter (1.000000)
WGS_1984_Web_Mercator_Auxiliary_Sphere
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20241211
10124400
20241211
10124400
150000000
5000
ISO19115_3
Esri ArcGIS 13.3.2.52636
Inaccessible Roads, Coastal Virginia
2024-08-30T00:00:00
Center for Coastal Resources Management, Virginia Institute of Marine Science (VIMS)
PO Box 1346
Gloucester Point
Virginia
23062
US
1375 Greate Road
CCRMinfo@vims.edu
https://www.vims.edu/ccrm/
Center for Coastal Resources Management, Virginia Institute of Marine Science (VIMS)
Center for Coastal Resources Management, Virginia Institute of Marine Science (VIMS)
Inaccessible roads are portions of roads that experience flooding and/or experience disconnection due to flooding (i.e., the road portion itself is not flooded but access to that road section is blocked by flooding on adjacent road segment(s)). This analysis seeks to aid in planning by identifying those inaccessible roads.
<DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>Roads accessibility was determined for flooding intervals of 1-10 feet of flooding, in 0.5 foot intervals. Access is evaluated as the ability to travel from the starting facility to each road in the region. </SPAN></P><P><SPAN>This project was funded by the Virginia Department of Transportation under an MOU for the Coastal Virginia Transportation Infrastructure Inundation Study. The views expressed herein are those of the authors and do not necessarily reflect the views of the Virginia Department of Transportation.</SPAN></P></DIV></DIV></DIV>
Center for Coastal Resources Management (CCRM) at the Virginia Institute of Marine Sciences, OpenStreetMap
Virginia
road accessibility
road flooding
network analysis
<DIV STYLE="text-align:Left;"><DIV><DIV><P><SPAN>Disclaimer: This data is intended to support planning, reporting, and restoration prioritization; however, its use does not guarantee the approval of any authorization or project.</SPAN></P></DIV></DIV></DIV>
Coastal Virginia
Molly Mitchell
Center for Coastal Resources Management, Virginia Institute of Marine Science
Research Scientist
P.O. Box 1346
Gloucester Point
VA
23062
molly@vims.edu
US
804-684-7188
https://www.vims.edu/ccrm
Molly Mitchell
File Geodatabase Feature Class
dataset
EPSG
6.18.3(9.3.1.2)
0
Simple
FALSE
0
TRUE
TRUE
Inaccessible_All_Merge_Web_Redo_121024_single
Feature Class
0
OBJECTID
OBJECTID
OID
4
0
0
Internal feature number.
Esri
Sequential unique whole numbers that are automatically generated.
Shape
Shape
Geometry
0
0
0
Feature geometry.
Esri
Coordinates defining the features.
floodLevel
floodLevel
String
255
0
0
Flooding level at which the road segment is inaccessible.
CCRM
fldInt
fldInt
Integer
4
0
0
Integer value of flooding level.
CCRM
SourceID
SourceID
String
255
0
0
ID field for associated starting point for accessibility.
CCRM
highway
highway
String
30
0
0
Open Street Map road class
OSM
NAMELSAD
NAMELSAD
String
100
0
0
Locality
CCRM
Fld_Zn_Comb
Fld_Zn_Comb
String
255
0
0
FEMA Flood zone category
CCRM
MTFCC
MTFCC
String
10
0
0
TIGER road class
RCL
CoSS_Name
CoSS_Name
String
254
0
0
Corridor of Statewide Significance
VDOT
PAVE_TYPE
Pavement Type (ACP, JRC, CRC)
String
255
0
0
Pavement type from Pavement_Conditions_2023_All_Systems (FeatureServer)
https://services.arcgis.com/p5v98VHDX9Atv3l7/ArcGIS/rest/services/Pavement_Conditions_2023_All_Systems/FeatureServer
VDOT
Condition
Condition
String
50
0
0
Pavement condition from from Pavement_Conditions_2023_All_Systems (FeatureServer)
https://services.arcgis.com/p5v98VHDX9Atv3l7/ArcGIS/rest/services/Pavement_Conditions_2023_All_Systems/FeatureServer
VDOT
RIM_OWNERSHIP_CATEGORY_DSC
RIM_OWNERSHIP_CATEGORY_DSC
String
999
0
0
The feature service displays VDOT's Responsibility/Ownership events layer segmented onto the Master Route LRS layer. It is meant to delineate the entity responsible for the maintenance and ownership of roadway segments throughout the Commonwealth of Virginia. Data currency is as of February 2023, when VDOT's 23.1 LRS Release was processed.
https://services.arcgis.com/p5v98VHDX9Atv3l7/ArcGIS/rest/services/Responsibility_Master_Route/FeatureServer
VDOT
ADT_class
ADT_class
String
255
0
0
Traffic Volume ADT. This layer consists of Average Daily Traffic (ADT) volumes with Vehicle Classification Data for most recent years, on Interstate, Arterial and Primary Routes. https://services.arcgis.com/p5v98VHDX9Atv3l7/ArcGIS/rest/services/VDOTTrafficVolume/FeatureServer/0
VDOT
Street_Name_Comb
Street_Name_Comb
String
255
0
0
Combination of OSM and VDOT Common route names.
CCRM, OSM, VDOT
Func_Class_Txt_1
Func_Class_Txt_1
String
255
0
0
Combination of functional class fields. Field class primarily sourced from: Functional_Classification_Feature_Service. This data represents the functional classification data represented on LRS 22.1. https://services.arcgis.com/p5v98VHDX9Atv3l7/ArcGIS/rest/services/Functional_Classification_Feature_Service/FeatureServer
VDOT
Rte_Name_Comb
Rte_Name_Comb
String
255
0
0
CoSS_Name2
CoSS_Name2
String
255
0
0
Name of CoSS Route from VDOT Coss_NAME.
VDOT
CoSS_Name3
CoSS_Name3
String
255
0
0
Name of CoSS Route from VDOT Coss_NAME.
VDOT
Route_Cat_Comb
Route_Cat_Comb
String
255
0
0
Route category is a combination of VDOT_RTE_CATEGORY_CD, evac_RTE_CATEGORY fields.
VDOT
levels_view
levels_view
String
255
0
0
Group level for flooding.
CCRM
miles
miles
Double
8
0
0
Road segment length, in miles
CCRM
Flooding
Flooding
Double
8
0
0
Water level at which the road segment becomes inaccessible.
CCRM
ORIG_FID
ORIG_FID
Integer
4
0
0
Shape_Length
Shape_Length
Double
8
0
0
Length of feature in internal units.
Esri
Positive real numbers that are automatically generated.
20241211
Center for Coastal Resources Management, Virginia Institute of Marine Science (VIMS)
PO Box 1346
Gloucester Point
Virginia
23062
US
1375 Greate Road
jhendricks@vims.edu
804-684-7140
https://www.vims.edu/ccrm/
Jessica Hendricks
Jessica Hendricks
Create a network dataset.
Created a network dataset for use in ArcGIS, using the Open Street Map download layer for roads and the Open Street Map toolbox for ArcGIS 6.4.
Center for Coastal Resources Management, Virginia Institute of Marine Science (VIMS)
PO Box 1346
Gloucester Point
Virginia
23062
US
1375 Greate Road
CCRMinfo@vims.edu
https://www.vims.edu/ccrm/
Center for Coastal Resources Management, Virginia Institute of Marine Science (VIMS)
Center for Coastal Resources Management, Virginia Institute of Marine Science (VIMS)
Center for Coastal Resources Management, Virginia Institute of Marine Science (VIMS)
Road network analysis and service areas generation.
The objective of this analysis was to determine accessible and inaccessible roads from selected VDOT facilities for varying levels of flooding. The analysis was completed using raster processing and network analysis tools in ArcGIS Desktop 8.0. First the raw lidar elevation point clouds were downloaded for the localities of interest and elevation rasters were created from them. Then flooded areas were determined for flood levels at 0.5 ft increments from 0.5 feet of flooding up to 10 feet of flooding from these elevation rasters. These flooding area polygons were used as polygon barrier inputs in the road network analysis. The road network analysis was done using road network datasets created in step 1. First the source point locations (VDOT facilities) were imported into the network analysis layer. Then, for each flood level, the flood area polygons were imported as a polygon barrier layer. Finally, the network analysis was solved to determine accessible and inacccessible roads for each flooding level.
Center for Coastal Resources Management, Virginia Institute of Marine Science (VIMS)
PO Box 1346
Gloucester Point
Virginia
23062
US
1375 Greate Road
CCRMinfo@vims.edu
https://www.vims.edu/ccrm/
Center for Coastal Resources Management, Virginia Institute of Marine Science (VIMS)
Center for Coastal Resources Management, Virginia Institute of Marine Science (VIMS)
Center for Coastal Resources Management, Virginia Institute of Marine Science (VIMS)