State Highway 99 in Texas: fatal crashes
From 2015 to 2024, 83 fatal crashes on State Highway 99 in Texas killed 89 people, the 56th most of 443 numbered roads in Texas. In 2024 there were 13 fatal crashes and 13 deaths on the road.
A state highway running through 5 counties of Texas. All fatal crashes in Texas.
Deaths on State Highway 99 in Texas by year
| Year | Fatal crashes | Deaths |
|---|---|---|
| 2024 | 13 | 13 |
| 2023 | 8 | 8 |
| 2022 | 11 | 12 |
| 2021 | 5 | 5 |
| 2020 | 8 | 9 |
| 2019 | 10 | 11 |
| 2018 | 9 | 10 |
| 2017 | 8 | 8 |
| 2016 | 5 | 5 |
| 2015 | 6 | 8 |
Source: NHTSA Fatality Analysis Reporting System (FARS), 2024 Annual Report File (released April 2026, subject to revision). How we count
Where on State Highway 99 in Texas: the counties with the most fatal crashes
Harris County had the most fatal crashes on State Highway 99 from 2015 to 2024: 49, with 52 deaths. Harris, Fort Bend and Montgomery counties together held 90% of fatal crashes on State Highway 99 in Texas from 2015 to 2024. Counties are listed from 5 fatal crashes.
| County | 2024 | 2015 to 2024 | Deaths | |
|---|---|---|---|---|
| 1 | Harris County | 9 | 49 | 52 |
| 2 | Fort Bend County | 0 | 19 | 19 |
| 3 | Montgomery County | 2 | 7 | 7 |
Source: NHTSA Fatality Analysis Reporting System (FARS), 2024 Annual Report File (released April 2026, subject to revision). How we count
When fatal crashes happen on State Highway 99 in Texas
83 fatal crashes on State Highway 99 in Texas from 2015 to 2024 have a known time, too few for any one weekday and time of day to stand out. The worst hour is 11 pm to midnight; the worst month is August.
| Midnight to 4 | 4 to 8 am | 8 to noon | Noon to 4 | 4 to 8 pm | 8 to midnight | |
|---|---|---|---|---|---|---|
| Sun | 3.6 percent, 3 fatal crashes | 3.6 percent, 3 fatal crashes | 1.2 percent, 1 fatal crash | 6.0 percent, 5 fatal crashes | 1.2 percent, 1 fatal crash | 4.8 percent, 4 fatal crashes |
| Mon | 1.2 percent, 1 fatal crash | 1.2 percent, 1 fatal crash | 0.0 percent, 0 fatal crashes | 1.2 percent, 1 fatal crash | 1.2 percent, 1 fatal crash | 3.6 percent, 3 fatal crashes |
| Tue | 3.6 percent, 3 fatal crashes | 1.2 percent, 1 fatal crash | 4.8 percent, 4 fatal crashes | 1.2 percent, 1 fatal crash | 1.2 percent, 1 fatal crash | 1.2 percent, 1 fatal crash |
| Wed | 1.2 percent, 1 fatal crash | 1.2 percent, 1 fatal crash | 1.2 percent, 1 fatal crash | 3.6 percent, 3 fatal crashes | 4.8 percent, 4 fatal crashes | 0.0 percent, 0 fatal crashes |
| Thu | 0.0 percent, 0 fatal crashes | 2.4 percent, 2 fatal crashes | 1.2 percent, 1 fatal crash | 1.2 percent, 1 fatal crash | 1.2 percent, 1 fatal crash | 3.6 percent, 3 fatal crashes |
| Fri | 1.2 percent, 1 fatal crash | 1.2 percent, 1 fatal crash | 2.4 percent, 2 fatal crashes | 2.4 percent, 2 fatal crashes | 6.0 percent, 5 fatal crashes | 4.8 percent, 4 fatal crashes |
| Sat | 7.2 percent, 6 fatal crashes | 2.4 percent, 2 fatal crashes | 1.2 percent, 1 fatal crash | 1.2 percent, 1 fatal crash | 3.6 percent, 3 fatal crashes | 2.4 percent, 2 fatal crashes |
By hour
By month
- Jan3.6%
- Feb8.4%
- Mar8.4%
- Apr13.3%
- May10.8%
- Jun8.4%
- Jul10.8%
- Aug16.9%
- Sep8.4%
- Oct4.8%
- Nov3.6%
- Dec2.4%
Source: NHTSA Fatality Analysis Reporting System (FARS), 2024 Annual Report File (released April 2026, subject to revision). How we count
What fatal crashes on State Highway 99 in Texas first hit
The first harmful event was a fixed object such as a tree, pole or barrier in 40%; a collision with another vehicle in 35%, a rollover in 9.6%, a pedestrian in 7.2%.
| First harmful event | Fatal crashes | Share |
|---|---|---|
| Fixed object (tree, pole, barrier, ditch) | 33 | 40% |
| Collision with another vehicle | 29 | 35% |
| Rollover | 8 | 9.6% |
| Other | 7 | 8.4% |
| Pedestrian | 6 | 7.2% |
| Cyclist | 0 | 0.0% |
| Parked vehicle | 0 | 0.0% |
| Not reported | 0 | 0.0% |
Source: NHTSA Fatality Analysis Reporting System (FARS), 2024 Annual Report File (released April 2026, subject to revision). How we count
How fatal crashes on State Highway 99 in Texas compare with the state
The largest difference from Texas: from 2015 to 2024, 9.6% of fatal crashes on State Highway 99 in Texas were on rural roads, against 38% across Texas. Also above the Texas share: drinking drivers and motorcycles. Below it: unbelted occupants and pedestrians. Shares of fatal crashes from 2015 to 2024, against the share across all of Texas. A share is only given over 20 crashes; above or below means more than chance would give on 83 crashes.
| State Highway 99 | Texas | ||
|---|---|---|---|
| On rural stretches | 9.6% | 38% | below the Texas share |
| At or near an intersection | 13% | 22% | about the same as the Texas share |
| In the dark, road unlit | 39% | 31% | about the same as the Texas share |
| A drinking driver | 37% | 26% | above the Texas share |
| Speeding | 33% | 32% | about the same as the Texas share |
| A distracted driver (as recorded) | 6.0% | 10% | about the same as the Texas share |
| Occupants killed unbelted | 27% | 45% | below the Texas share |
| Hit-and-run | 4.8% | 7.6% | about the same as the Texas share |
| A motorcycle involved | 23% | 14% | above the Texas share |
| Pedestrians among the dead | 9.0% | 18% | below the Texas share |
Source: NHTSA Fatality Analysis Reporting System (FARS), 2024 Annual Report File (released April 2026, subject to revision). How we count
Questions about fatal crashes on State Highway 99 in Texas
- How many fatal crashes have there been on State Highway 99 in Texas?
- 83 fatal crashes killed 89 people on State Highway 99 in Texas from 2015 to 2024. In 2024 there were 13 fatal crashes and 13 deaths. Source: NHTSA's Fatality Analysis Reporting System (FARS).
- Where on State Highway 99 in Texas do the most fatal crashes happen?
- Harris County had the most fatal crashes on State Highway 99 from 2015 to 2024: 49, with 52 deaths. Fort Bend County was second with 19.
Other roads in Texas with a page
All fatal crashes in Texas, with every road ranked.
Where the State Highway 99 numbers come from
Counted from NHTSA's Fatality Analysis Reporting System, 2024 Annual Report File: every fatal crash whose road NHTSA filed as State Highway 99 in Texas (filed under 13 spellings, such as "SR-99", "SR-99 GRAND PAKWY", "SR-99 GRAND PARKWAY", "SR-99 GRAND PKWY"). Ramps, frontage and service roads are left out. Where two routes share a road, NHTSA files each crash under one of them, so a shared stretch counts on one route only. A fatal crash is one in which someone died within 30 days. Totals in state and news reports for a road usually differ: they include ramps and frontage roads, or count from preliminary reports. The full method.