This beautiful old photo shows the construction of Memorial Bridge looking from D.C. towards Arlington National Cemetery. The photo is dated May 15th, 1928.

Source: Flickr user Tim Evanson
It took 46 years and at least nine major proposals to get to this 1928 construction photo. Read the full 140-year fight to build Memorial Bridge, from the 1886 medieval fortress design through the 250-foot arch proposed for the same site in 2026.
My guess is that the photo of the Memorial Bridge is actually looking west, not east.
It is clearly the Custis-Lee Mansion on the hill in the background. So it is looking from DC into Virginia. The construction company that built the bridge was Parsons-Brinkerhof, by the way.