Question: The Kennedy Interchange, unofficially, though universally, referred to as Spaghetti Junction, is the intersection of Interstates 64, 65 and 71 at the northeastern edge of downtown Louisville, it is named for the "John F. Kennedy Memorial Bridge", a six-lane, single-deck cantilever bridge that carries southbound Interstate 65 across the Ohio River, connecting Louisville, Kentucky and Jeffersonville, Indiana, in which country?

Context paragraphs:
Umatilla Bridge: The Umatilla Bridge is the collective name for a pair of bridges in the northwest United States, carrying Interstate 82/U.S. Route 395 across the Columbia River at the Washington/Oregon border.  The older bridge opened in 1955 and is a steel through truss cantilever bridge and carries southbound (east on I-82) traffic.  Northbound traffic (west on I-82) travels on the newer concrete arch bridge, opened in 1988.

John F. Kennedy Memorial Bridge: The John F. Kennedy Memorial Bridge is a six-lane, single-deck cantilever bridge that carries southbound Interstate 65 across the Ohio River, connecting Louisville, Kentucky and Jeffersonville, Indiana.  The main span is 700 ft (two spans) and the bridge has a total length of 2498 ft .  The span carries six southbound lanes.  It is named after U.S. President John F. Kennedy.

Carquinez Bridge: The Carquinez Bridge refers to parallel bridges spanning the Carquinez Strait, forming part of Interstate 80 between Crockett and Vallejo, in the U.S. state of California.  The name originally referred to a single cantilever bridge built in 1927, helping to form a direct route between San Francisco and Sacramento.  A second parallel cantilever bridge was completed in 1958 to deal with the increased traffic.  Later, seismic problems of the 1927 span led to the construction and 2003 opening of a replacement: a suspension bridge officially called the Al Zampa Memorial Bridge (named in the memory of iron worker Al Zampa, who played an integral role in the construction of numerous San Francisco Bay Area bridges).  Currently, the Alfred Zampa Memorial Bridge carries westbound traffic from Vallejo to Crockett, and the 1958 cantilever span carries eastbound traffic.

Abraham Lincoln Bridge: The Abraham Lincoln Bridge is a six-lane, single-deck cable-stayed bridge carrying northbound Interstate 65 across the Ohio River, connecting Louisville, Kentucky and Jeffersonville, Indiana.  The main span is 700 ft (two spans) and the bridge has a total length of 2100 ft .  It is named after U.S. President Abraham Lincoln, who was born in Kentucky and grew up in Southern Indiana.

Interstate 71: Interstate 71 (I-71) is a north-south (physically northeast-southwest) Interstate Highway in the Great Lakes/Midwestern and Southeastern region of the United States.  Its southern terminus is at an interchange with Interstate 64 and Interstate 65 (the Kennedy Interchange) in Louisville, Kentucky.  Its northern terminus is at an interchange with Interstate 90 in Cleveland, Ohio.  I-71 runs concurrently with Interstate 75 from a point about 20 mi south of Cincinnati, Ohio into downtown Cincinnati.  Almost three quarters of the route lies east of I-75, thereby putting it out of its proper place in the Interstate grid.

Marquam Bridge: The Marquam Bridge is a double-deck, steel-truss cantilever bridge that carries Interstate 5 traffic across the Willamette River south of downtown Portland, Oregon.  It is the busiest bridge in Oregon, carrying 135,900 vehicles a day as of 2008.  The upper deck carries northbound traffic; the lower deck carries southbound traffic.

Simeon Willis Memorial Bridge: Simeon Willis Memorial Bridge is a bridge constructed in 1985 over the Ohio River connecting Winchester Ave. (US 23) and 13th St. (US 60) at Ashland, Kentucky to US 52 at Coal Grove, Ohio.  It is named for Kentucky Governor Simeon S. Willis.  The bridge was planned, at one point, to cross at 45th St. and connect to a proposed Ashland bypass.  The Willis bridge, however, was built one block from the existing Ben Williamson Memorial Bridge and generally carries only Ohio-bound traffic.  Southbound traffic, which is normally carried on the Williamson Bridge, was diverted to the Willis Bridge in early 2007 so that the Williamson Bridge could be repaired and painted.  The Williamson Bridge was also closed briefly and traffic again diverted to the Willis Bridge in the summer of 2013 after a tractor-trailer ran into the tower on the Ohio side.

Kennedy Interchange: The Kennedy Interchange, unofficially, though universally, referred to as Spaghetti Junction, is the intersection of Interstates 64, 65 and 71 at the northeastern edge of downtown Louisville, Kentucky, United States.  It is named for the "John F. Kennedy Memorial Bridge" located immediately to the north of the interchange (which carries I-65).

Big Four Bridge: The Big Four Bridge is a six-span former railroad truss bridge that crosses the Ohio River, connecting Louisville, Kentucky, and Jeffersonville, Indiana.  It was completed in 1895, and updated in 1929.  The largest single span is 547 ft , with the entire bridge spanning 2525 ft .  It took its name from the defunct Cleveland, Cincinnati, Chicago and St. Louis Railway, which was nicknamed the "Big Four Railroad".  It is now a converted pedestrian and bicycle bridge from Louisville into Jeffersonville, Indiana.

Ohio River Bridges Project: The Ohio River Bridges Project is an ongoing Louisville metropolitan area transportation project involving the reconstruction of the Kennedy Interchange (locally known as "Spaghetti Junction"), the completion of two new Ohio River bridges and the reconstruction of ramps on Interstate 65 between Muhammad Ali Boulevard and downtown.

Supporting paragraphs: Kennedy Interchange John F. Kennedy Memorial Bridge
Answer: United States