A major traffic crash brought FM-521 southbound to a standstill near State Highway 35 in Brazoria County early Saturday morning, February 21, 2026. The collision occurred at 12:25 AM, forcing emergency response crews to the scene and creating significant delays for anyone traveling through that corridor during the overnight hours.
The incident hit during what should have been a relatively light traffic window, yet the severity of the crash still managed to back up traffic considerably. Drivers heading south on FM-521 toward Freeport and the coastal areas faced substantial slowdowns as crews worked the scene. Those needing to reach destinations south of the SH-35 intersection had best options routing through nearby Farm-to-Market roads or diverting to TX-36, which runs parallel to FM-521 slightly to the east and offers a viable alternative for through traffic. Local commuters familiar with the back roads could also consider CR-38 to the west as a workaround.
This particular stretch of FM-521 near SH-35 carries a steady mix of through traffic and local commuters, especially during daytime hours when industrial and agricultural activity picks up. The intersection itself sits in an area where highway corridors converge, making it a critical junction for anyone traveling between Brazoria County communities and points south. While major incidents here don't happen with alarming frequency, the road's configuration means any significant crash can quickly create backups that ripple across the region.
Southbound FM-521 bore the brunt of the impact at the time of the collision. As of the latest TranStar reports, crews were actively working to clear the roadway. Drivers should be prepared for residual congestion even as the wreckage was being removed, particularly since early morning hours mean fewer alternate routes are actively monitored by traffic management. Anyone who can delay travel through this area Saturday morning should consider doing so until the all-clear comes through.
36 crashes had already been logged here in the month before this incident.
The location's running count has added 107 crashes since this incident. 79 of the subsequent crashes were classified as major.
The pace has eased at this location in the time since.
Several of the incidents hit within days of one another.
That places this location among the highest-incident segments in the county.
Updated through May 29, 2026.
FM-521 Southbound at SH-35 in Brazoria County
Harris County, Texas
This report was produced by LTA's editor-designed production system under the executive editorial direction of Dennis R. Mundy, Executive Editor. The system combines our proprietary data pipeline with AI-assisted drafting to deliver verified incident coverage to LTA's editorial standards.