Interstate 20: Major East–West Highway across the Southern United States

Interstate 20, a 1,539-mile east–west highway crossing Texas, Louisiana, Mississippi, Alabama, Georgia and South Carolina, linking Dallas–Fort Worth to Florence, SC; a vital freight and passenger corridor across the southern U.S.

Interstate 20 (I-20) is an east–west component of the Interstate Highway System in the United States. Its official length is 1,539.38 miles (2,477.39 km). The highway begins in the state of Texas near Kent and runs eastward to its eastern end point at Florence, South Carolina.

Overview

I-20 crosses six states, providing a continuous freeway link across the southern portion of the country. It carries interstate traffic between several large metropolitan regions, and in many places parallels older U.S. highways and rail corridors.

Route

States traversed: Texas, Louisiana, Mississippi, Alabama, Georgia, South Carolina.
Major urban areas served include the Dallas–Fort Worth region, Shreveport (LA), Jackson (MS), Birmingham (AL) and Atlanta (GA).
The eastern terminus at Florence connects travelers to I‑95 and regional routes serving the Carolinas and the Atlantic seaboard.

History and function

Like other Interstates, I-20 was planned as part of the national program initiated in the 1950s and was constructed in segments over several decades. It functions as a primary corridor for both commercial freight and passenger travel across the southern United States, linking industrial centers, ports, and inland distribution hubs.

Importance

Interstate 20 is a key east–west route in the southern U.S., facilitating long-distance travel and regional economic activity. Its connections with other major interstates and highways make it an important part of the national transportation network.