Which interstate in Texas is the most dangerous per mile?

I-69, with 31.88 fatal crashes a year per 100 miles over 2015 to 2024 on 83 miles. That is crashes per mile of road, not per vehicle.

How many fatal crashes in Texas happen on numbered roads?

17,405 of 35,785 fatal crashes in Texas from 2015 to 2024 (49%) were filed on an interstate, US or state route; the rest were on county roads, city streets and unnamed roads, which are in the state's total but not ranked here.

The deadliest roads in Texas

I-10 had the most fatal crashes of any numbered road in Texas from 2015 to 2024: 1,071, with 1,189 deaths. The 60 roads listed held 36% of all fatal crashes in Texas from 2015 to 2024; 12 are interstates, 26 US routes, 22 state highways.

443 numbered roads in Texas recorded a fatal crash in those years; the 60 with 5 or more are ranked below, and 88 have a page of their own. All fatal crashes in Texas.

Every numbered road in Texas, ranked by fatal crashes

	Road	Kind	Fatal crashes	Deaths	2022 to 2024	Counties with the most
1	I-10	Interstate	1,071	1,189	311	Harris, El Paso, Bexar
2	I-35	Interstate	1,032	1,141	327	Travis, Dallas, Bexar
3	I-20	Interstate	851	980	216	Dallas, Tarrant, Ector
4	I-45	Interstate	720	775	231	Harris, Montgomery, Dallas
5	I-30	Interstate	425	478	120	Dallas, Tarrant, Hunt
6	US 59	US route	412	497	109	Polk, Nacogdoches, Wharton
7	US 287	US route	307	364	113	Tarrant, Ellis, Wilbarger
8	US 281	US route	296	356	89	Bexar, Blanco, Hidalgo
9	State Highway 6	State highway	283	312	83	Harris, Brazoria, Fort Bend
10	US 90	US route	279	315	103	Bexar, Harris, Jefferson
11	US 69	US route	272	320	78	Jefferson, Angelina, Cherokee
12	I-69	Interstate	264	284	82	Harris, Fort Bend, Montgomery
13	US 290	US route	262	316	71	Travis, Harris, Bastrop
14	US 84	US route	251	290	82	Lubbock, McLennan, Garza
15	US 67	US route	250	290	93	Dallas, Johnson, Erath
16	US 87	US route	236	286	75	Tom Green, Victoria, Howard
17	US 183	US route	209	235	79	Travis, Williamson, Gonzales
18	State Highway 71	State highway	205	246	67	Travis, Bastrop, Fayette
19	US 82	US route	203	229	67	Grayson, Lamar, Bowie
20	US 190	US route	200	225	62	Polk, Bell, Robertson
21	US 83	US route	196	257	60	Starr, Webb, Taylor
22	US 77	US route	185	232	53	Victoria, Fayette, Refugio
23	US 75	US route	183	201	47	Dallas, Collin, Grayson
24	I-635	Interstate	176	190	36	Dallas, Tarrant
25	State Highway 16	State highway	159	181	46	Bexar, Bandera, Atascosa
26	State Highway 21	State highway	154	175	50	Bastrop, Caldwell, Nacogdoches
27	US 79	US route	153	182	44	Panola, Milam, Leon
28	State Highway 36	State highway	145	165	53	Coryell, Burleson, Fort Bend
29	I-37	Interstate	142	158	45	Bexar, Atascosa, Nueces
30	US 62	US route	140	163	47	Lubbock, El Paso, Hudspeth
31	US 377	US route	140	158	52	Denton, Tarrant, Grayson
32	I-35E	Interstate	135	148	33	Dallas, Denton, Ellis
33	US 80	US route	132	142	41	Kaufman, Harrison, Gregg
34	State Highway 105	State highway	129	151	34	Montgomery, Grimes, Liberty
35	State Highway 249	State highway	125	136	34	Harris, Montgomery, Grimes
36	US 380	US route	125	133	41	Collin, Denton, Wise
37	US 175	US route	121	138	31	Dallas, Kaufman, Henderson
38	I-410	Interstate	121	124	45	Bexar
39	US 385	US route	116	143	33	Ector, Andrews, Hartley
40	State Highway 35	State highway	116	134	41	Brazoria, Matagorda, Aransas
41	State Highway 31	State highway	107	130	39	Smith, Henderson, Gregg
42	State Highway 183	State highway	106	115	36	Tarrant, Dallas, Travis
43	State Highway 146	State highway	103	114	26	Harris, Liberty, Galveston
44	I-40	Interstate	102	135	33	Potter, Oldham, Carson
45	US 277	US route	102	117	26	Maverick, Val Verde, Tom Green
46	State Highway 19	State highway	101	131	32	Hopkins, Van Zandt, Henderson
47	I-820	Interstate	101	114	27	Tarrant
48	US 271	US route	99	113	31	Upshur, Lamar, Smith
49	State Highway 121	State highway	96	115	38	Tarrant, Fannin, Collin
50	State Highway 114	State highway	93	98	35	Wise, Tarrant, Dallas
51	US 259	US route	92	104	23	Gregg, Rusk, Nacogdoches
52	State Highway 349	State highway	89	103	37	Midland, Martin, Upton
53	State Highway 87	State highway	86	95	26	Galveston, Newton, Orange
54	State Highway 12	State highway	86	93	34	Dallas, Orange
55	State Highway 99	State highway	83	89	32	Harris, Fort Bend, Montgomery
56	State Highway 302	State highway	82	97	23	Ector, Winkler, Loving
57	State Highway 288	State highway	82	95	28	Brazoria, Harris, Denton
58	State Highway 180	State highway	79	87	20	Tarrant, Dallas
59	US 181	US route	78	88	25	Bexar, Karnes, Wilson
60	State Highway 64	State highway	78	85	30	Smith, Van Zandt, Rusk

Source: NHTSA Fatality Analysis Reporting System (FARS), 2024 Annual Report File (released April 2026, subject to revision). How we count

Interstates in Texas per mile

Fatal crashes a year per 100 miles of road, 2015 to 2024, for interstates with 20 miles or more in Texas. Crashes per mile of road, not per vehicle. Mileage from the FHWA Interstate route log.

	Road	Per 100 miles a year	Fatal crashes	Miles
1	I-69	31.88	264	83
2	I-35	25.34	1,032	407
3	I-45	25.26	720	285
4	I-14	19.67	49	25
5	I-30	18.95	425	224
6	I-35E	13.92	135	97
7	I-20	13.39	851	636
8	I-10	12.19	1,071	879
9	I-37	9.92	142	143
10	I-27	5.76	74	128
11	I-40	5.76	102	177

Source: NHTSA Fatality Analysis Reporting System (FARS), 2024 Annual Report File (released April 2026, subject to revision). How we count

Questions about fatal crashes in Texas

What is the deadliest road in Texas?: I-10 had the most fatal crashes of any numbered road in Texas from 2015 to 2024: 1,071, with 1,189 deaths. I-35 was second with 1,032 and I-20 third with 851.
Which interstate in Texas is the most dangerous per mile?: I-69, with 31.88 fatal crashes a year per 100 miles over 2015 to 2024 on 83 miles. That is crashes per mile of road, not per vehicle.
How many fatal crashes in Texas happen on numbered roads?: 17,405 of 35,785 fatal crashes in Texas from 2015 to 2024 (49%) were filed on an interstate, US or state route; the rest were on county roads, city streets and unnamed roads, which are in the state's total but not ranked here.

Where the Texas road numbers come from

Counted from NHTSA's Fatality Analysis Reporting System, 2024 Annual Report File: every fatal crash filed on a numbered interstate, US or state route in Texas, read from the road name NHTSA filed, with ramps, frontage and service roads left out. A road gets its own page with 15 or more fatal crashes from 2022 to 2024. The full method.