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Major Collision on I-45 South at Exit 39 in Houston — Sunday, March...

March 08, 2026 at 04:03 PMUpdated September 28, 2026By Dennis R. Mundy, Executive Editor📍 Harris County

A significant vehicle collision brought southbound traffic to a crawl on I-45 near Exit 39 at 4:03 PM on Sunday, March 08, 2026. The crash occurred during the late afternoon hours when traffic typically begins building ahead of the evening commute, creating substantial delays for drivers heading out of downtown Houston toward the Pasadena and Texas City areas.

The southbound lanes experienced heavy congestion in the immediate aftermath of the wreck. Drivers looking to bypass the backup had limited options given the location's geography. Those heading toward Pasadena could have exited earlier onto local roads through the East End, though that option would have added considerable time to most trips. An alternate route southbound would require backtracking north to take the Beltway 8 eastbound connector, a significant detour that many drivers typically avoid. The timing—early evening on a Sunday—meant the incident caught weekend traffic that would normally be lighter than a weekday afternoon.

Exit 39 sits in a transitional zone between downtown's industrial corridor and the residential neighborhoods stretching toward the refineries and shipping channels of Southeast Harris County. This stretch of I-45 handles a steady mix of through-traffic, commercial vehicles, and local commuters year-round. The exit itself serves as a key access point for local traffic, making incidents here particularly disruptive to the surrounding road network.

By late afternoon, the collision remained a significant obstruction. Southbound drivers on I-45 should have anticipated extended travel times stretching back toward downtown. The backup likely created spillover effects on feeder roads and surface streets in the immediate area as drivers sought alternatives. Heavy congestion persisted in the southbound direction, with recovery taking longer than typical due to the incident's severity and the time of day it occurred.

📊 Accident History at Exit 39 & I-45 S

LTA incident record
Past 30 days40 incidents (24 major)
Past 90 days143 incidents (88 major)
Past 12 months477 incidents (302 major, 2 fatal)
TxDOT crash record
Since January 20201,791 crashes, 2 fatal

Sources: TxDOT Crash Records Information System and Local Traffic Accidents database. Counts through October 1, 2026.

📊 Location Analysis

Before this crash, the location had recorded 75 other incidents in 30 days.

392 more crashes have been documented at this location since this incident. 240 of the crashes that followed were major. Among those, 2 crash was fatal.

The location has seen fewer crashes per week since this incident.

A handful of the crashes happened within a single week.

The full count places this location among the top crash sites in the county.

Recent Incidents at This Location

Current through September 28, 2026.

📍 Incident Location

Exit 39 & I-45 S

Harris County, Texas

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How This Report Was Produced

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.

Read our full methodology →

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