Portal:U.S. roads/Did you know/April 2019

...that the State Circle (pictured) in Annapolis, Maryland is designated Maryland Route 797 and has a circumference of 0.27 miles (0.43 km)?
... that seven of eight major bridges on Washington State Route 504 were destroyed by a lahar during the 1980 eruption of Mount St. Helens?
... that the New Jersey Route 70 bridge over the Manasquan River is known as the September 11th Memorial Bridge in honor of residents of Monmouth and Ocean counties who lost their lives in the September 11 attacks?
... that California State Route 4 has portions that are multi-lane freeway, and portions that are a single lane?
... that a new section of US 2 was detoured around the Cut River Bridge when the latter was delayed due to World War II?