April 9
| 1943 | The Secretary of War authorizes PRA to construct the Haines Cut-Off to connect the Alaska Highway with Haines in the Alaska Panhandle. Ken Coates' 1992 book, North to Alaska: Fifty Years on the World's Most Remarkable Highway (University of Alaska Press), describes the Haines Highway in the early 1970's as "twisting, rocky, and rather terrifying." |
| 1985 | FHWA officially adopts AASHTO's A Policy on Geometric Design of Highways and Streets. Because of the color of its cover, the policy is nicknamed "The Green Book." |
