A History of The Roads Which Would Become US 20
This section will detail various individual sections of roads that would be incorporated into making US 20. This section will also only focus on designations made prior the final approval of November 1926, any future highway names will be detailed in another section. This section as well may only briefly highlight and refer the reader to another section where necessary.
- Boston Post Road (MA)
- New England Route 5 (MA-NY)
- Jacob's Ladder (MA)
- The Yellowstone Trail Highway (MA-ID)
- Hawkeye Highway (IA)