They wanted the roads for their Army, just like the US Interstate system was originally created in case the Army needed to be moved across the country very quickly if the Soviets attacked.

只关注军队用路，就好像美国州际公路系统,原本是为了苏联攻击时,陆军能快速穿越国家而建的。

耶鲁公开课 - 新约课程节选

Past generations gave us the interstate highway system and the Hoover Dam.

FORBES: Why We Don't Need An Infrastructure Bank? Japan Is Why

The Interstate system was seen as the road to the future, representing prosperity and driving US economic growth by fostering mobility.

BBC: Killer on the road: why mass murderers haunt US highways

When the US embarked in the 1950s on the construction of the 42, 795-mile National System of Interstate and Defence Highways, Americans applauded.

BBC: Killer on the road: why mass murderers haunt US highways