Date | Image | Innovation | Society Sort ascending |
---|---|---|---|
1947 | Maine Turnpike | ASCE | |
1811-1839 | National Road | ASCE | |
1942 | Alaska Highway | ASCE | |
1940 | Pennsylvania Turnpike (Old Section) | ASCE | |
1834 | Allegheny Portage Railroad | ASCE | |
1935-1937 | Blue Ridge Parkway | ASCE | |
1833 | Charleston - Hamburg Railroad | ASCE | |
1876 | Tehachapi Pass Railroad Line | ASCE |