- ... that Hawaii's Chain of Craters Road (pictured) has been blocked repeatedly by lava flows from Kīlauea volcano (pictured) since it was built in 1928?
- ... that the part of Arkansas Highway 29 that goes through Hope, Arkansas, is referred to as "Bill Clinton Drive"?
- ... that the interchange between Maryland Route 90 and U.S. Route 113 sat unused for 24 years until US 113 was relocated as a four-lane divided highway in 2000?
- ... that two bridges are currently under construction in Nevada that when finished will claim the title of longest in the United States: the Mike O'Callaghan – Pat Tillman Memorial Bridge will be the longest and first major composite steel/concrete arch in the U.S. and the Galena Creek Bridge will have the longest concrete arch?
- ...that Interstate 129 and U.S. Route 77 both end at Interstate 29 less than 1 mile (1.6 km) after crossing the Missouri River into Sioux City, Iowa?