Chiming in to agree w/what several other people have said. As year-round bike commuter Alexandria to DC, I rely most heavily on the section of MVT from Four Mile Run trail (at southern end of National Airport) to 14th St bridge. I use a MTB with studded tires in inclement weather, which works ok for flat ice, but that is not nearly sufficient for unplowed snow & rutted ice & slush, etc.
Below is a pic of the uncleared MVT at the access point from Four Mile Run from this winter. I had carried my bike over the (also uncleared) Four Mile Run to this point hoping MVT would be cleared. I turned around & carried it back after taking this pic.
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