Structurally Deficient Bridges
By topomatt in Aviation-Transportation | 2 comments
Under Aviation/Transportation Category in the GE Library Browser:
Structurally Deficient Bridges
This placemark collection contains data for approximately 70,000 bridges throughout the United States derived from the National Bridge Inventory Database 2006. The following fields were extracted from the database and are included for each placemark in the collection:
- State Code
- Route Number
- Latitude
- Longitude
- Year Built
- Kind of Material/Design
- Type of Design/Construction
- Condition of Deck
- Condition of Superstructure
- Condition of Substructure
This placemark collection only contains information on bridges with a status of "Structurally Deficient". For a better understanding of the data, I suggest reading Coding Guide for the Structure Inventory and Appraisal of the Nations Bridges.
It’s a big file so give it a minute or two to load.
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Brent | Apr 12, 2008 | Reply
I just took a close look at my home town area of Cedar Rapids, Iowa and not a single one of these looks like it’s close to the actual bridge. Some markers in the middle of large sections of trees and and I even found one in the middle of a field.
topomatt | May 13, 2008 | Reply
Ya, what I’ve found it the accuracy seems to vary widely by region. Some areas are very accurate, others are way off.
With 70,000 placemarks, I’m not about to tackle the task of manually correcting them :)