I have always thought Lady Bird Johnson Park was a little strange. Though closer to the Virginia shore, this island lies completely within the District, much like Roosevelt Island to the northwest. Although, unlike Roosevelt, this island is overrun with freeway spaghetti, most of it serving the Commonwealth and not the District. Also, this area is served by a Metro station, Arlington Cemetery. There is no residential, commercial, office, or industrial construction on the island, save a small marina on the south end. There are no park facilities. The entire area just seems like a serene setting to plop down a bunch of (confusing) highways.
Considering Lady Bird Johnson's efforts to beautify our nation's freeways, I suppose this is somewhat fitting (and probably intentional). though her Highway Beautification Act pertained mostly to interstates and ironically none of the highways on her island are interstates. Still, it seems like such a waste of a land. Why call it a "park" if there are no park facilities? It's not exactly the kind of place one can picnic or hike.
I would like to see the highway lanes consolidated, perhaps with some modest low rise apartments on the north side of the island oriented to the Metro station. And open the island up with some trails and waterside park facilities. Right now, the District seems to be allowing this land to be utilized only by the commuters in Arlington County.