Crash Blocks IH-45 South Near NASA Parkway During Evening Commute

A major crash shut down lanes on IH-45 Gulf Southbound at FM-528/West NASA Parkway around 6:28 PM Thursday, May 21, backing up traffic during the tail end of rush hour.

The incident tied up multiple lanes, creating significant delays for drivers heading toward Galveston and the surrounding area. If you're caught in this stretch, expect standstill conditions — the backup extended well beyond the crash site as drivers merged around the wreckage and emergency crews worked the scene.

This part of IH-45 South sees crashes regularly. According to LocalTrafficAccidents.com data, 80 percent of incidents at this location over the past 90 days have occurred during rush hour, and crashes are the dominant incident type here. Thursday evening commute times amplify the impact — a major wreck that might clear in 45 minutes on a quiet Tuesday can easily snarl the corridor for two hours when thousands of drivers are funneling through at once.

Crews were on scene managing the incident and clearing debris. Weather conditions at the time — overcast skies with temperatures around 77 degrees — were clear, so visibility wasn't a factor in the crash itself.

Here's where to go if you're stuck: Hardy Toll Road offers a northbound bypass if you can reach it. SH-249 heading northwest works for drivers further north, and Airline Drive provides local surface-street alternatives if you're willing to sacrifice freeway speed for slower but moving traffic. The key is getting off IH-45 South before you hit the backup.

Harris County saw 19,422 traffic incidents over the past 30 days, with 17 fatalities, underscoring just how busy these roads are. Every major incident during peak hours amplifies delays across the entire county as drivers reroute and congestion ripples to alternate corridors.

The incident was cleared and traffic began moving. Expect residual delays and possible merge backups for a while longer as the corridor returns to normal flow.