Portal:U.S. roads/Did you know/September 2012

...that the Davison Freeway (pictured) in Detroit, Michigan was the first urban, depressed freeway in the United States?
...that South Carolina Highway 700 connects Charleston with Wadmalaw Island, the site of the only working tea plantation in the United States?
...that the first roundabout constructed in St. Mary's County, Maryland, was at the junction of Maryland Route 234 and Maryland Route 238?
...that the first callboxes in San Diego County, California were on California State Route 52 near Convoy Street in 1988?
...that it took two years to restore U.S. Route 90 in Mississippi following Hurricane Katrina in 2005?