The wye is at the north end of CSX's "Alexandria Extension" (highlighted below in yellow), tying the Extension into the Capital Subdivision. The Extension actually begins farther south near Benning Yard (not visible in this map). Near Lloyd Street, halfway between route 450 and MD295 is the south end of the new railroad overpass that carries the Extension above a tangle of industrial businesses in Bladensburg. [Click any image below to enlarge it.]
[Above] Looking south along the west leg of the wye.
[Above] Looking south along the east leg. Note the grading to the left, where the east leg will be shoved over when the southern approach to the wye's apex is separated into two tracks.
[Above] Work in progress at the south apex preparing for a second single-track deck girder bridge across the Northeast Branch of the Anacostia River. As mentioned above, the new bridge is to accommodate breaking apart the apex into two tracks, which will eventually run double-track all the down to the RF&P.
[Above] Presenting Q410, en route to Baltimore and beyond.
A view of the wye looking north. Note the pile of rocks behind the signal . . .
. . . because I'm now on top of it awaiting the next train.
Agh! I thought Q416 went to Baltimore, but alas, it's westbound--behind the construction junk!
Looking east along the Capital Sub showing the back side of the same CPLs, with the wye's west leg off to the right. This signal location is called JD, recalling a tower once here.
This is the "white object" mentioned above that marked the stair to the tunnel under the railroad.