A 2016 ranking by a personal-finance site put Interstate 45 second among U.S. highways, using fatal crashes per 100 miles of road from 2011 to 2015. Within four years, republished versions called it first and dropped the years. Here is the chain, the arithmetic and what official records can show.
5,913 commercial vehicle crashes and 43 deaths in Harris County in 2025, with every year back to 2015 and a county-by-county comparison.
Crash data
3,769 people died on Texas roads in 2025, down from 4,159 in 2024. The death rate, 1.20 per 100 million miles driven, was the lowest in TxDOT records back to 2003. The state still has not had a day without a traffic death since Nov. 7, 2000.
About 2.5 million trucks served at Port Houston's container terminals in 2025, with truck counts for SH 146, SH 225, the 610 Loop and Beltway 8.
Federal crash causation rankings for large trucks, with NHTSA 2024 fatal-crash patterns, TxDOT's 2025 contributing factors and roadside inspection results.
38,533 commercial vehicle crashes and 528 deaths in Texas in 2025, with TxDOT, NHTSA and FMCSA counts side by side and what each one measures.
Texas roadside inspection results for FY 2025, the federal and Texas rules on licensing, drug testing and insurance, and Houston's hazardous materials routes.
| Corridor | Busiest 2025 AADT | TTI rank |
|---|---|---|
| I-45 | 271,938 | No. 7 |
| I-10 | 330,394 | No. 6 |
| I-610 | 303,669 | No. 1 |
| I-69 / US 59 | 297,474 | No. 2 |
| Beltway 8 | 197,362 | No. 27 |
| SH 288 | 180,000 | No. 34 |
| SH 225 | 129,148 | Not ranked |
The published rankings of Houston's deadliest highways side by side, with their metrics and years, and what TxDOT's road-type data show instead.
The published rankings of Houston's most dangerous intersections, what each one counts, the locations that repeat, and what TxDOT, the City and H-GAC data say.
174 pedestrians killed in Harris County in 2024 and 343 seriously injured, with Houston and Texas counts, where pedestrian deaths happen, and bicyclist and motorcyclist figures.
293 traffic deaths and 1,465 serious injuries in Houston in 2025, with every year since 2015, comparisons with other Texas cities and why sources disagree.
Status, cost and schedule for 14 Houston highway, bridge and channel projects, from the I-45 rebuild to the Ship Channel bridges and Project 11.
| Under construction | Schedule |
|---|---|
| I-45 NHHIP Segment 3: Downtown loop system (I-45, I-10, I-69) | Drainage work began Oct. 2024; I-69 rebuild began Jan. 2025; phasing runs to 2038 |
| I-10 Heights Blvd to I-45 (raise lanes above White Oak Bayou floodplain) | 2024-2028 |
| SH 35 and I-610 interchange | 2022-2027 |
| Sam Houston Ship Channel Bridge replacement (Beltway 8) | South span to carry both directions from spring 2027; second span by end of 2030 |
Original analysis of public transportation data, with methods and source documents published alongside each note.
Research note 1
A 2016 ranking by a personal-finance site put Interstate 45 second among U.S. highways, using fatal crashes per 100 miles of road from 2011 to 2015. Within four years, republished versions called it first and dropped the years. Here is the chain, the arithmetic and what official records can show.
Research note 2
Houston committed in 2019 to end traffic deaths and serious injuries by 2030. TxDOT's tables count 293 deaths inside the city in 2025, more than in any year from 2015 to 2018. Reaching zero on schedule would take a faster decline than any single year in the past decade.
About this publication. Texas Mobility Outlook is an independent publication covering transportation, road safety, freight movement, infrastructure and crash data across Greater Houston and Texas. More about the publication
