Portal:U.S. roads/Did you know/January 2017

... that the Newhall Pass interchange has collapsed from earthquakes twice and burned from trucks colliding in a tunnel once?
...that Dupont Road, which carries a portion of Delaware Route 100, was built by the DuPont Company in the 19th century to transport black powder south to the Christina River to be shipped, bypassing the city of Wilmington?
... that Washington State Route 213 was proposed for 35 years before a small, 0.35-mile (0.56 km) long segment was added to the state highways system in 2008?
... that M-94 in Manistique, Michigan crosses the Siphon Bridge, a structure once described in the pages of the Ripley's Believe It or Not! column?
... that one of the landmarks along Interstate 84 in Utah is the Thousand Mile Tree, planted by Union Pacific Railroad workers to celebrate the first transcontinental railroad reaching 1,000 miles (1,600 km) from its origin in Omaha, Nebraska?