Interstate 635

Interstate 635 is a pair of auxiliary highways that serve major metropolitan areas in Texas and Kansas. While they share the same number, each serves a distinct purpose in its respective region—Dallas-Fort Worth and Kansas City. These beltway segments play critical roles in regional traffic management, connecting key highways and serving as bypass routes for through traffic.

In Texas, I-635, also known as the Lyndon B. Johnson Freeway (LBJ Freeway), loops around the northern and eastern portions of Dallas. Beginning at I-20 in Balch Springs and ending at I-20 in Irving, it provides a vital corridor for commuters and freight moving across the Dallas metroplex. The freeway intersects several major routes, including I-30, US-75, I-35E, and the Dallas North Tollway. The section between US-75 and I-35E is part of the LBJ Express, a project that added TEXpress managed lanes below the main lanes to ease congestion.

In Kansas, I-635 is a shorter spur route in the Kansas City metropolitan area. It begins at I-35 in Overland Park, Kansas, and travels north, eventually connecting with I-29 and US-69 near the Missouri River. This I-635 provides an alternative to I-435 for travelers seeking to bypass downtown Kansas City, especially for north-south freight and truck traffic.