- ... that M-134 is one of three state highways in Michigan on an island, and one of two to use a ferry (pictured)?
- ...that an abandoned stretch of the partially-built Pennsylvania Route 23 freeway in Lancaster County was given to local farmers to use and is now known as the "Goat Path Expressway"?
- ...that Summerlin Parkway, a freeway in Las Vegas, was initially constructed by the Summerlin homeowners' association?
- ... that the route of New York State Route 298 includes Carrier Circle, which is one of two traffic circles that directly connect to an interchange of the New York State Thruway?
- ...that the bridge that carried Maryland Route 32 across the Patapsco River in Sykesville between 1963 and 2004 was the longest of only three aluminum triangular box beam girder bridges constructed in the United States?