TEXAS — A new report has identified the 100 most congested roadways in the Lone Star State in 2025, and the Houston area and the Dallas-Fort Worth metroplex are home to a majority.
The Texas A&M Transportation Institute and the Texas Department of Transportation (TxDOT) created the ranking. A mandate from the Texas Legislature has required that TxDOT produce the ranking each year since 2009, in response to increased traffic throughout the state.
According to the report, W Loop Fwy/I-610 in Harris County is the No. 1 most congested road segment in the state for the third year in a row. This has created an annual congestion cost of $166,357,915 and caused a delay of 1,729,459 hours.
With a delay of 1,687,219 hours, the second most congested roadway is Eastex Fwy/I-69/U.S. 59, also in Harris County. The road has an annual congestion cost of $146,592,608.
In Dallas County, the Woodall Rogers Fwy/State Highway Spur 66 segment is the third most congested. It creates a delay of 1,399,098 hours and an annual cost of $52,174,747.
Back in Harris County, the delay on Southwest Fwy/I-69/U.S. 59 ranks No. 4 for a delay of 1,218,433 hours and costs $178,336,322 annually.
Harris County appears in the top five for a fourth time, with N. Loop W. Fwy/I-610 taking the No. 5 spot for most congested in the state. The traffic there caused a delay of 1,057,990 hours and costs $183,324,325 annually.
Across the state in 2024, traffic delayed drivers by 523,998,702 hours — 3.6% more than in 2023. The cost of congestion reached $14,694,742,849 (9.3% more than in 2023). Also in 2024, 196,231,470 gallons of fuel was wasted in traffic (35.5% more than in 2023).
Overall, the Houston area and Dallas-Fort Worth metroplex are home to a majority of the state’s 100 most congested roads. DFW contains 41 and the Houston-The Woodlands-Sugar Land area has 36.
According to TxDOT, the top factors that put road segments on the list are economic vitality, land use, construction, congestion outside the peak period and weather.
See the full ranking here.