I want to recount my entire experience of this as I saw it.
I first saw the bridge from miles away as I crossed a plain. There was a very high cliff at the far end of the plain. The cliff face was nearly black and went in both directions (left and right) as far as I could see. The bridge was across a vertical slot in the cliff face near the edge of the cliff. Interstate 64 went into this slot in the cliff and ascended to the level of the cliff over several miles. As I entered the slot, I saw the bridge high overhead. The slot was at least 10 times as high as it was wide.
I saw this twice, in 1991 and 1995. Each time I was going to visit relatives in Norfo0lk VA. And each time, on the way home, we stopped in Washington DC and spent a day at the Smithsonian, so I did not return via I-64, but used I-70.