Portal:U.S. roads/Did you know/September 2018

... that a 156-foot (48 m) tunnel for the Lower Manhattan Expressway was built in New York City in the 1960s, but was never used?
... that Wyoming Highway 89 is so numbered from a failed proposal for U.S. Route 89 to stay in that state rather than enter Idaho?
... that M-67, a state highway in the Upper Peninsula of Michigan, has remained essentially unchanged but the highways connecting to it have changed three times since 1919?
... the highest road in the Utah state route system is Utah State Route 150 over Bald Mountain Pass [elevation 10,715 feet (3,266 m)]?
... that WIS 35 is the longest highway in Wisconsin?