| Former name(s) | Conduit Road[1] |
|---|---|
| Namesake | Douglas MacArthur[1] |
| Length | 12.9 mi (20.8 km)[2] |
| Tourist routes |  C&O Canal Scenic Byway |
| Restrictions | No commercial vehicles over 4 wheels or 6 tons in Maryland[2] |
| West end | Chesapeake and Ohio Canal National Historical Park |
| Major junctions | Clara Barton Parkway in Potomac, MD MD 614 in Bethesda, MD |
| East end | Foxhall Road in Washington, DC |
MacArthur Boulevard is a road in Montgomery County, Maryland, and Washington, D.C. The road follows a northwest–southeast route from the Great Falls area of the Chesapeake and Ohio Canal National Historical Park in Potomac, Maryland, to Foxhall Road NW and 44th Street NW in the Foxhall neighborhood of Washington, D.C., near the Georgetown Reservoir. MacArthur Boulevard runs parallel to the Clara Barton Parkway and the C&O Canal for most of its route, passing through the Palisades area of the District. In Cabin John, traffic is reduced to a single alternating lane as it passes over the Union Arch Bridge, the longest span masonry arch bridge in the Western Hemisphere, and which also carries the Washington Aqueduct.
- ^ a b Cite error: The named reference
conduitwas invoked but never defined (see the help page). - ^ a b "MacArthur Boulevard" (Map). Google Maps. Retrieved February 1, 2020.