Beyond the Columbia River and the eye-catching majesty or the ‘Gorge’ rock formations, is the Historic Columbia River Highway. It parallels Interstate 84. It was hugely innovative in its day and one of my most enjoyable observations along that old highway is the stonework by Italian stone masons that is still quite evident today.
The WyEast Blog provides a very informative review on the stone construction of the Scenic Highway entitled Stone Walls of the Columbia River Highway. One thing you don’t see as much is the vertical stacking of rocks in the construction.
If you have a historical bent for the history of road construction up the Gorge and how it influenced American road construction then you need to look at the site Historic Columbia River Highway for lots of history.