I'd recommend
Nothing like it in the World: the men who built the transcontinental railroad by Stephen Ambrose. He has a lively style of writing that breaks a large story down into gripping segments, like the bit where he details the contest between the two sides as to who could lay the most tracks in one day.
If you want good (and very accurate) male-oriented HF on the revolution and the decades afterward, James Alexander Thom's
From Sea to Shining Sea. It follows the fortunes of the Clark family, first with Revolutionary War General George Rogers Clark and then with his better known youngest brother, William Clark of the Lewis and Clark expedition. One of my all-time favorites.
I'm afraid both books are sized like doorstops. If you want lighter fiction that is still well-researched as to detail, although a bit formulaic, try the Sackett family series by the late Louis L'Amour.