U.S. 75 and I-635 Interchange Southbound Lane Closure in Dallas

Reported October 28, 2026

Reported

Southbound lanes at the interchange of U.S. Highway 75 and Interstate 635 in the Dallas area were closed as an active police investigation unfolded at the site, according to a report from WFAA. The closure affected one of the busiest interchange corridors in the Dallas metro, where U.S. 75, known locally as Central Expressway, meets the LBJ Freeway.

• Southbound Direction Affected: Southbound closures at major interchanges can push significant traffic volumes onto parallel surface streets, which are not designed to absorb freeway-level demand.
• Police Investigation Closures: When law enforcement closes lanes or ramps for an investigation, the duration is difficult to predict and can extend well beyond initial estimates, which compounds delays for commuters.
• High-Volume Interchange: The U.S. 75 and I-635 interchange is one of the more heavily traveled junctions in North Texas, and closures there tend to ripple outward, affecting connecting routes like the Dallas North Tollway and surface roads in Richardson and Garland.

Where This Interchange Sits in the Dallas Road Network

U.S. 75 is a north-south spine that connects downtown Dallas with the suburbs of Richardson, Plano, and Allen. I-635, the LBJ Freeway, forms a partial loop through the northern and eastern portions of the Dallas metro, linking U.S. 75 with Interstate 35E, Interstate 30, and other major corridors. Their intersection sits near the boundary of Dallas and Richardson, making it a convergence point for commuters traveling between suburban communities to the north and employment centers to the south.

For example, a southbound closure at this interchange during peak hours can redirect thousands of vehicles per hour onto Preston Road or Greenville Avenue, turning normally manageable surface-street traffic into a slow-moving stream that stretches back several miles. Drivers familiar with the area know that alternate routes in this corridor fill quickly, so patience and early awareness of the closure can make a meaningful difference.

Why Police Investigations Cause Prolonged Road Closures

When police close freeway lanes for an investigation, the closure is essentially a moving boundary: it stays in place as long as investigators need to document the scene, collect evidence, and reconstruct what happened. Unlike a standard traffic incident where wreckage is cleared and lanes reopen relatively quickly, an investigation-related closure operates on law enforcement’s timetable rather than a transportation agency’s. The Texas Department of Transportation (TxDOT) and local authorities coordinate to manage traffic flow around such closures, but neither can accelerate the investigative process.

Drivers in the Dallas metro are generally advised to monitor real-time conditions through resources like TxDOT DriveTexas, which tracks statewide road conditions and closures. For the Dallas-Fort Worth area specifically, the North Central Texas Council of Governments and local traffic management centers also push updates through connected apps and highway message signs. Staying informed before entering a congested zone is far more effective than reacting after you’re already caught in the backup, much the way a weather forecast helps more before you leave home than after you’re already soaked.

• Check Conditions Before Departure: Real-time traffic apps and official agency feeds can alert drivers to active closures before they enter the affected stretch of road.
• Allow Extra Travel Time: Investigation-related closures are unpredictable in duration, so building buffer time into your trip helps avoid cascading schedule disruptions.
• Respect Scene Boundaries: Law enforcement closures carry legal weight, and driving around or through them can interfere with an active investigation and create additional safety risks.
• Use Official Detour Routes: Where TxDOT or police have designated alternate routes, following them keeps traffic movement more predictable for everyone on the road.

Frequently Asked Questions

Which Lanes Were Closed at U.S. 75 and I-635

According to the WFAA headline, the southbound lanes of U.S. 75 at the I-635 interchange were affected. No additional detail about the specific number of lanes or ramps was available from the source.

How Long Will the Closure Last

The duration of a police investigation closure is determined by law enforcement at the scene and isn’t announced in advance. Drivers should check live traffic feeds for updates before and during their commute.

Where Can Drivers Find Current Road Conditions in the Dallas Area

TxDOT’s DriveTexas portal at drivetexas.org provides statewide road condition and closure information updated in real time, and it’s one of the most reliable starting points for checking current conditions on Texas highways.