The uncooperative (for railfanning) 9th Street overpass provides an
overhead look back about a mile to where Montello station had been.
Here the ex-B&O (now CSX) tracks are on the left and the electrified
ex-Pennsylvania RR tracks (now Amtrak) are on the right.
Initially the B&O had a monopoly on railroad service to Washington,
but eventually the Pennsy muscled in. Each RR had its own station
and the downtown area and Mall were busy with steam engines, unsightly
steam engines according to the politicians.
They "encouraged" the railroads to build a single, joint station,
and in 1907 Union Station opened. Both the B&O and Pennsy constructed
new approaches to the station, and for this stretch the tracks of the
two competitors were adjacent.
At the bottom of the photo, note the pair of B&O tracks bends to the
left: they are part of the large wye that connects with the Metropolitan
Branch. The switch at the bottom leads a single track into Union Station.
The B&O's F tower had been here on the left; on page 232 of Impossible
Challenge II it can be seen in a photo similar to this that dates from
Prior to the realignment, the B&O's right of way had continued across
what has become New York Avenue, passing close to the tall office
building seen on the right.