Question:  Interstate 69 (I-69) is an Interstate Highway in the United States nicknamed after an agreement signed by Canada, Mexico, and the United States, creating a trilateral trade bloc in what location?

Interstate 69W (I-69W) is a proposed north–south Interstate Highway running through South Texas in the United States.  The freeway begins northeast of the middle of World Trade International Bridge in Laredo and ends at I-35.  In the future, I-69W will head northward for 180 mi before terminating near Victoria as both I-69E and I-69W merge to form I-69.  For its entire length, I-69W runs concurrently with US Highway 59 (US 59). <SEP>  The agreement came into force on January 1, 1994.  It superseded the Canada–United States Free Trade Agreement between the U.S. and Canada. The North American Free Trade Agreement (NAFTA; Spanish: "Tratado de Libre Comercio de América del Norte", "TLCAN"; French: "Accord de libre-échange nord-américain", "ALÉNA") is an agreement signed by Canada, Mexico, and the United States, creating a trilateral trade bloc in North America. <SEP>  The remaining separated parts are variously completed and posted or unposted parts of an extension southwest to the Mexican border in Texas.  Of this extension—nicknamed the NAFTA Superhighway because it would help trade with Canada and Mexico spurred by the North American Free Trade Agreement—five pieces near Corpus Christi, Houston, northwestern Mississippi, Memphis, and Evansville have been newly built or upgraded and signposted as I-69.  A sixth segment of I-69 through Kentucky utilizing that state's existing parkway system and a section of I-24, was established by federal legislation in 2008 but only a portion is signposted.  A section of the previously existing Western Kentucky Parkway from Eddyville to Nortonville was approved and signposted in late 2011, with the Pennyrile Parkway between Nortonville and Henderson being signed as I-69 in 2015. Interstate 69 (I-69) is an Interstate Highway in the United States currently consisting of seven disjointed parts with an original continuous segment from Indianapolis, Indiana, northeast to the Canada–US border in Port Huron, Michigan, at 355.8 mi .  This brings the total length to about 680 mi . <SEP> Currently the Interstate Highway System includes seven suffixed routes that are signed: the Interstate 35 split into Interstate 35E and Interstate 35W at Dallas-Fort Worth, Texas; a similar split into Interstate 35E and Interstate 35W at Minneapolis-St.  Paul, Minnesota; as well as Interstate 69C, Interstate 69E and Interstate 69W in South Texas; in addition, Interstate 480N in Ohio exists and is designated as such on mile markers but is otherwise unsigned.  However, there were once many more, as the three-digit Interstates were not designated until after all major routes were assigned numbers, including some short connections and spurs.  (A few of the shortest, including I-190 and I-195, were assigned three-digit numbers almost immediately.)  Most were not equal splits like on I-35, but had the main route continue through, and often the suffixed route never returned to its parent.  In 1980, AASHTO abolished the majority of suffixes due to confusion, renumbering them as three-digit Interstates, but several that return to their parents were kept.  For example, Interstate 15E has since become Interstate 215, but both I-35E/I-35W and I-69 splits still exist.