Every time I drive over Memorial Bridge on my way into DC from Virginia, I remark about the strange new structures that now inhabit the pedestrian walkways.
A few months ago they appeared -- two giant ramps on each side of the roadway. I thought perhaps they were temporary and that they would be removed after their purpose was served. But apparently not.
They are like giant protracted speed bumps that fill the entire width of the walkway.
The only possible purpose I can see for them is to slow the bicycle traffic that crosses the bridge, although I can't imagine it was ever such a problem.
I consulted Google, my source of all knowledge, to no avail.
Can anyone out there tell me what function these ugly additions to Memorial Bridge serve?