Interstate 49 - History

History

The original plans for Interstate Highways in Louisiana only included Interstates 10 and 20 with no connection in between. After Interstate 55 was added in the 1950s, the state considered building a toll road to connect I-10 in southwestern Louisiana and I-20 in the northern part of the state, but later rejected the idea.

In the mid 1970s, The Federal Highway Administration approved an Interstate Highway to run between I-10 and I-20, beginning at I-10 in Lafayette and ending at I-20 in Shreveport. The mileage was gained from mileage released from other highways the states did not build as well as 153 miles (246 km) from a supplemental reserve.

Construction of I-49 began in the early 1980s, the first signed segment from I-10 to Washington, Louisiana, opened in 1984. After several delays, most of the highway was open by the early 1990s. The entire length of the 212-mile (341 km) road was completed May 1, 1996 when a 16.6-mile (26.7 km) section of highway in Alexandria named the Martin Luther King Jr. Highway was completed. The total cost of I-49's construction was about $1.38 billion.

Arkansas and Missouri have been pursuing an I-49 designation for US 71 and I-540 for a number of years. In the early 2000s, there were plans by both states to rename the roadway as such between I-44 west of Joplin and I-40 at Fort Smith, once new roadway had been completed around Bella Vista, Arkansas and north to Pineville, Missouri. However, the AASHTO Special Committee on U.S. Route Numbers and Interstate Highways denied the I-49 designation at their annual meeting in September 2007 because none of the new roadway was under construction.

During this time, there was also some debate as to whether the Interstate 29 designation should be extended further south from its current terminus in Kansas City, to either Joplin or all the way to Fort Smith.