Links
- http://www.fhwa.dot.gov/interstate/brainiacs/buildinterstate.htm
- http://www.history.com/topics/interstate-highway-system
- https://www.nae.edu/Publications/Bridge/TransportationInfrastructure/HighwayDesignandConstructionTheInnovationChallenge7708.aspx
- http://www.wired.com/2014/06/wuwt-traffic-induced-demand/