Cabin John Parkway

Cabin John Parkway
Cabin John Parkway highlighted in red
Route information
Maintained by MDSHA
Length	1.50 mi[1] (2.41 km)
Existed	1965–present
Restrictions	No trucks
Major junctions
South end	Clara Barton Parkway in Cabin John
North end	I-495 / MD 190 in Bethesda
Location
Country	United States
State	Maryland
Counties	Montgomery
Highway system
Maryland highway system Interstate US State Scenic Byways

The Cabin John Parkway is an controlled-access parkway in the U.S. state of Maryland. The parkway runs 1.50 miles (2.41 km) from the Clara Barton Parkway in Cabin John north to Interstate 495 (I-495) in Bethesda in southwestern Montgomery County. Cabin John Parkway is a four-lane freeway that serves as a connector between the Clara Barton Parkway in the direction of Washington, D.C. and I-495 in the direction of Rockville and Silver Spring. The parkway was constructed in the mid-1960s and passes under the historic Union Arch Bridge, the longest masonry arch span in America.