The article Washington's systemic streets provided a solid history and explanation regarding DC's street system. Technical but definitely readable.
Tuesday, September 29, 2009
Usually, empty lots will not have an address record associated with it . However, if there is a DCRA approved address for the lot, there should be an address record whose status is 'assigned'. If there was a building, that existed on the lot between 1999 to last year, and that building was demolished then it is highly likely that there will be an address record whose status is 'RETIRE'. The 'RETIRE' status indicates that the building is demolished and / or that the address is no longer in existence.
(Image from Google StreetView)
Thursday, September 17, 2009
On the Location Details page it will show the details of the address. If the address already has residential units (in the MAR) it will show 'Unit: Display / Submit Unit(s).' If the address does not have any units (in the MAR) then it will show 'Unit: None. / Submit Unit(s).' If, for example, there are no units then click on the 'None. Submit Unit(s)' link, the Unit Submission Page will appear. See below image:
The user can then fill out the appropriate information and submit it to the MAR Data Team for inclusion. The submission will be reviewed and a followup email will be sent to the user.
Your assistance is appreciated. Currently, there are 188,298 residential units in the MAR. It is estimated that there should between 194,000 to 202,000 records.
Thursday, September 10, 2009
- New Buildings
- New Streets
- Demolished Buildings
- Demolished Streets
While looking at the new imagery, I found two addresses 3203 Georgia Avenue NW and 3205 Georgia Avenue NW which appeared to be demolished (see image at top of blog post). Since the 2009 imagery is of of low resolution compared to DC GIS's 2008 Orthophoto Imagery, I wanted confirmation that these two addresses had been demolished. I check with USPS to see if they were considered deliverable. They were still deliverable (which is and indication that they might be still in existence). So I googled these addresses. I found these two images (3203 & 3205) on flickr which stated these addresses had been demolished. This information coupled with the 2009 Imagery was sufficient to change the status of these addresses to 'RETIRE' in the addresses from the MAR. Demolished addresses receive a 'RETIRE' status in the MAR.
Wednesday, September 9, 2009
Unit blocks are located in three types of places:
- Regular blocks on the address grid, usually located adjacent to East Capitol Street, North Capitol Street, South Capitol Street.
- Circles (Dupont Circle NW, Logan Circle NW, Sherman Circle NW)
- Alley Streets (Pomander Walk NW, Walter Houp Court NE)
Tuesday, September 1, 2009
- Addresses: 141,769
- Residential Units: 187,400
- Aliases: 5,204
- Street Name Alias: 1,022
- Intersections: 16,359
- Block: 15,826
- Address / SSL Cross Reference Table: 235,565
We attended and presented twice regarding the MAR at the 2009 URISA/NENA Addressing Conference in Providence, RI. Useful information was learned from the dozens of presentations we attended.
Large development sites (areas) were field visited such as Dakota Crossing, National Baseball Stadium area, Henson Ridge Phase II and the Shops at Park Village. A small number of changes to the MAR were digitized due to the information collected.