The route was originally designated on April 14, 1926, as a connector between
Dallas and
Rhome. In June 1932, SH 114 was extended to
Bridgeport. On February 12, 1935, an extension northward from
Chico to
Sunset was added. On July 15, 1935, the section from Chico to Sunset was cancelled (as it was not fully built). This section was restored on August 1, 1938. On October 6, 1943, the section of SH 114 from US 77 in Dallas to US 67 became a portion of
Loop 12. On October 1, 1968, the concurrency with SH 24 from Bridgeport to Chico was removed because SH 24 (now US 380) was rerouted. On January 7, 1971, SH 114 was relocated to Bridgeport. This route remained little changed until November 3, 1972, when it was extended northward from Sunset to
Bowie. Major rerouting was made on November 24, 1975, when the route was redirected west over
U.S. Highway 380,
U.S. Highway 281, former
SH 199, and
U.S. Highway 82 from Bridgeport to
Lubbock, with the stretch from Bridgeport to Bowie renumbered as
SH 101. On December 14, 1977, the route was extended to the New Mexico state line, replacing
SH 116. The connecting NM 116 was renumbered to NM 114. On August 2, 1985,
Delta Air Lines Flight 191 crossed this route shortly before crashing on approach to
Dallas/Fort Worth Airport. One of the aircraft's engines struck a car on the roadway, instantly killing its occupant; 136 people on the flight also died in the accident. In 2010, work began on an stretch, dubbed the DFW Connector, between
SH 121 and
International Parkway. A quarter of the $1 billion project was funded by federal stimulus funds enacted under the
American Recovery and Reinvestment Act of 2009. The project's aim was to ease congestion at North Texas' worst traffic problem. The project called for as many as 24 lanes and 2 TEXpress lanes along a mile stretch between
SH 26 and International Parkway. The
Texas Department of Transportation (TxDOT) awarded the project in a joint venture led by
Kiewit. The SH 114 section of the DFW Connector was completed in 2014. == Route description ==