Arlington County has created a public Google Map that people can edit with bollard locations and issues.
View Arlington Bollards in a larger map
In particular, they are asking for locations where bollard collars (that part in the ground that holds the bollard post) may be sticking up causing a hazard. Since we have the map, it will also be useful for identifying other bollard-related locations, such as where bollards are needed or where they should be removed, broken ones and safety or hazard issues.
I have posted on this topic before (here and here). Those who know me know that I am opposed to bollards in general and believe they should only be installed where there is documented need, rather than at every intersection just as a policy. The W&OD trail removed all its bollards along the entire 45 miles some years back and experiences few problems with cars. Not zero, though. However, they have decided that the positive aspects of better aesthetics and safer travel for cyclists outweigh the negatives of a rare car encroaching on the trail.
Please check the map out and add any locations that you believe could use attention. It's easy, just click on the EDIT button and you will be able to edit the map. Remember to save when you are done. Thanks for your help.
Steve Offutt is a member of the Arlington Bicycle Advisory Committee