The Most Dangerous Intersections in Bexar County

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Villarreal & Begum Law Firm February 12, 2021

A New Study and Analysis of Bexar County Crash Data

Nationwide, intersections are a major source of traffic collisions and traffic injuries. In fact, researchers estimate that nearly half of all traffic collision injuries are intersection-related.

With that in mind, are Bexar County motorists at higher risk of being involved in a collision? If so, where are the most dangerous intersections in the county?  What can we do to help increase safety on our roads in San Antonio?

In order to find out, we worked with data visualization and data analysis firm 1point21 Interactive.  Together we analyzed data from all motor vehicle collisions that occurred in Texas in 2020 – more than 540,000 records – and isolated those that occurred at intersections in Bexar County.  Additionally, we compared data from 2020 to 2019 to examine the impact that the COVID-19 pandemic and ensuing response have had on motor vehicle collisions in the county.

[Interactive Map] Bexar County Intersection Collisions

The map below shows all Bexar County road crossings where at least one collision occurred in 2020.  The size of the circle is based on each intersection’s collision injury score(CIS).  The map is interactive and users may zoom in and out and hover over each point to reveal more information.

*If viewing on a mobile device, rotate the device for the best experience. 

The State of Bexar County Collisions

In 2020, there were nearly 50,000 crashes in Bexar County.  These collisions resulted in 16,781 injuries and 199 deaths.

Overall, just over 30 percent of Bexar traffic collisions and 40 percent of traffic injuries occurred at intersections – meaning the collision physically occurred within a crossing.  This is slightly higher, but right in line with Texas as a whole, where intersections account for 29 percent and 39 percent respectively.

However, when you include collisions that were flagged to be intersection related – those where the flow of traffic from or other factors related to the intersection were involved in the collision – those numbers jump to 43 percent of all collisions and 55 percent of injuries.

100 Most Dangerous Intersections in Bexar County

After analyzing the crash data, we ranked each intersection based on our collision injury score (CIS) – a formula that weighs collision volume and injury severity at each crossing to create a score.  Based on that metric, below are the 100 most dangerous intersections in Bexar County.

Rank Intersection Crashes Susp. Serious Injury Total Injuries Fatalities CIS
1 HWY 151 & LOOP 410 65 4 38 0 312.5
2 BANDERA RD & LOOP 1604 51 0 37 0 253.5
3 LOOP 1604 & HWY 281 63 1 30 0 238
4 LOOP 410 & SAN PEDRO AVE 52 0 32 0 222
5 IH 10 & LOOP 1604 60 3 26 0 220
6 RIGSBY AVE & LOOP 410 52 1 28 0 219.5
7 LOOP 410 & OLD SEGUIN RD 44 1 22 1 191.5
8 IH 35 & WALZEM RD 42 2 20 1 187
9 STATE HWY 151 & W MILITARY DR 44 0 26 0 186.5
10 ALAMO RANCH PKWY & WESTWOOD LOOP 66 1 19 0 181
11 WETMORE RD & WURZBACH PKWY 34 1 21 0 156.5
12 POTRANCO RD & LOOP 1604 29 0 21 0 149
13 MARBACH RD & LOOP 410 51 0 19 0 146
14 LOCKHILL SELMA RD & LOOP 1604 25 0 22 0 142.5
15 HWY 281 & STONE OAK PKWY 28 0 19 0 140.5
16 FREDERICKSBURG RD & WURZBACH RD 36 0 16 0 136
17 CULEBRA RD &  LOOP 1604 43 1 14 0 128
18 HUEBNER RD & IH 10 39 0 17 0 126.5
19 INGRAM RD & LOOP 410 35 0 18 0 125
20 W MILITARY DR &  HWY 90 40 0 14 0 122.5
21 IH 10 & WURZBACH RD 39 1 14 0 121.5
22 LOOP 1604 & SCHUWIRTH RD 2 1 16 0 119.5
23 CALLAGHAN RD & CULEBRA RD 38 1 14 0 118
24 CALLAGHAN RD & FREDERICKSBURG RD 15 0 16 0 117.5
25 DE ZAVALA RD & IH 10 40 0 14 0 117.5
26 INGRAM RD & POTRANCO RD 17 2 14 0 114.5
27 CERALVO & S GENERAL MCMULLEN 16 1 16 0 113.5
28 E HOUSTON ST & E IH10 12 0 18 0 112
29 CASTROVILLE RD & S GENERAL MCMULLEN 19 0 16 0 111.5
30 BANDERA RD & LOOP 410 26 0 16 0 111
31 IH 35 & LOOP 1604 52 0 8 0 109.5
32 SAN PEDRO AVE & W ELMIRA ST 23 0 15 0 108
33 CULEBRA RD & LOOP 410 38 0 12 0 105.5
34 N ZARZAMORA ST & W COMMERCE ST 20 0 16 0 105
35 HORAL DR & MARBACH RD 24 0 11 1 104
36 EVANS RD & HWY 281 39 1 11 0 104
37 CULEBRA RD & WESTOVER HILLS BLVD 13 0 15 0 103
38 S GENERAL MCMULLEN & W COMMERCE ST 22 0 15 0 99.5
39 BANDERA RD & ECKHERT RD 16 1 13 0 98.5
40 BANDERA RD & MAINLAND DR 11 2 13 0 98.5
41 LA MANDA BLVD & VANCE JACKSON RD 15 1 13 0 97.5
42 CULEBRA RD & ROFT RD 7 1 13 0 97
43 FM 78 & PAT BOOKER RD 22 0 13 0 97
44 BANDERA RD & HILLCREST DR 22 0 14 0 97
45 FREDERICKSBURG RD & HUEBNER RD 24 0 14 0 96.5
46 BLANCO RD & LOOP 1604 26 0 13 0 96
47 POTRANCO RD & TALLEY RD 18 0 12 0 95.5
48 LOOP 410 & WEST AVE 18 2 10 0 95.5
49 IH 35  & LOOP 410 29 0 11 0 94
50 CROSSWINDS WAY & TECH COM DR 9 4 10 0 94
51 PLEASANTON RD & SW MILITARY DR 14 0 14 0 91.5
52 FM 78 & N FOSTER RD 19 1 11 0 91.5
53 NACOGDOCHES RD & WURZBACH PKWY 19 0 12 0 91.5
54 BANDERA RD & TIMCO WEST 6 0 15 0 91
55 BOERNE STAGE RD & IH 10 W 15 0 14 0 90
56 NOT REPORTED & NOT REPORTED 23 0 13 0 88
57 CASTLE CROSS DR & RITTIMAN RD 17 1 12 0 87
58 N PECOS LA TRINIDAD & W MARTIN ST 21 0 12 0 86
59 POTRANCO RD & STATE HWY 151 23 1 10 0 85.5
60 CULEBRA RD & CULEBRA RD 20 0 11 0 85
61 E SOUTHCROSS BLVD & S WW WHITE RD 17 0 12 0 84.5
62 S PRESA ST & SE MILITARY DR 14 0 12 0 84
63 NOT REPORTED & NOT REPORTED 29 1 8 0 84
64 S GENERAL MCMULLEN & WEIR AVE 11 0 12 0 83.5
65 N HUNT LN & HWY 151 18 0 10 0 83
66 CROSSWINDS WAY & OCONNOR RD 18 0 13 0 83
67 CULEBRA RD & PIPERS CREEK 14 0 9 1 81.5
68 ELM TRL & WALZEM RD 11 3 9 0 81
69 HWY 211 & POTRANCO RD 18 0 9 0 80.5
70 LOOP 410 & PERRIN BEITEL 20 0 12 0 80
71 ROOSEVELT AVE & S FLORES ST 12 1 10 0 79.5
72 E QUINCY ST & MCCULLOUGH AVE 18 0 10 0 78
73 IH 35 & W THEO 20 0 11 0 77.5
74 LOCKHILL SELMA RD & WURZBACH RD 17 0 10 0 77
75 LOOP 1604 & NACOGDOCHES RD 32 0 9 0 77
76 DIVISION & PLEASANTON RD 8 0 10 1 75.5
77 BENTLEY DR & WALZEM RD 9 2 9 0 74
78 CULEBRA RD & TIMBER VIEW DR 13 1 9 0 73
79 MCCULLOUGH AVE & NE 410 LOOP 23 0 10 0 73
80 IH 35 & STARLIGHT TERRACE 15 1 6 1 72.5
81 N EVANS RD & N NOT REPORTED 10 0 9 0 72.5
82 FM 1516 & FM 78 17 0 9 0 72
83 BABCOCK RD & PRUE RD 12 0 10 0 72
84 BANDERA RD & STONECROFT 17 0 10 0 72
85 S ZARZAMORA ST & SW MILITARY DR 16 0 9 0 71
86 S NEW BRAUNFELS AVE & STEVES AVE 11 1 8 0 71
87 UTSA BLVD & HWY 10 21 0 9 0 71
88 KITTY HAWK RD & TOEPPERWEIN RD 17 0 6 1 69.5
89 PAT BOOKER RD & VILLAGE OAK DR 22 1 6 0 69.5
90 CAMP BULLIS RD & NOT REPORTED 19 0 10 0 69
91 E CHAVANEAUX RD & ROOSEVELT AVE 21 0 9 0 68.5
92 NW 26TH ST & W POPLAR ST 3 2 4 2 68
93 CULEBRA RD & N ELMENDORF ST 15 0 10 0 67.5
94 CALLAGHAN RD & INGRAM RD 10 0 11 0 67.5
95 FM 78 & GIBBS SPRAWL RD 15 0 10 0 67.5
96 BABCOCK RD & HILLCREST DR 15 0 7 0 67.5
97 FM 1518 & FM 78 10 0 10 0 67.5
98 IH 10 & VANCE JACKSON RD 17 0 10 0 67
99 CRESTWAY RD & FM 1516 7 3 6 0 67
100 BABCOCK RD & W HAUSMAN RD 12 0 10 0 67

Loops, Highways, and Intersections

The most dangerous intersection in Bexar County can be found at Highway 151 and Loop 410 in San Antonio.  It accounted for the second most crashes (64), the most total injuries (38), and the most serious injuries (4) among Bexar County intersections.

Why? This location actually encompasses multiple road crossings including the on and off-ramps of both highways as well as the access roads for each.  While they are not what one would consider a traditional intersection, we felt that it was important to include both highways and loops in our analysis when crashes met the conditions of our study ( TxDOT deemed that it was at an intersection).

What this data analysis shows, unequivocally, is that drivers in Bexar County need to be especially aware of their surroundings when going through interchanges on or driving near either one of the major loops.  In fact, 23 of the 100 most dangerous intersections and eight of the top ten involve either Loop 410 or Loop 1604.

Coming in at number 16, the most dangerous traditional intersection in Bexar County is Fredericksburg Road and Wurzbach Road in San Antonio.  This crossing accounted for 36 crashes and 16 total injuries in 2020.

How did COVID-19 Impact Motor Vehicle Accidents in 2020?

No analysis of 2020 motor vehicle collision data would be complete without assessing the impact of the coronavirus pandemic and the ensuing responses.  We compared the collision and injury totals from 2020 to 2019 to understand just how much COVID-19 affected crashes (and essentially traffic in general) in Bexar County.  The results were dramatic yet somewhat expected.

Total Collisions

In March, as responses began to ramp up considerably and the pandemic was declared to be a public health emergency, both total collisions and injuries began to drop precipitously.   Collisions fell by 26 percent in March, from 5,420 to 4,002, and by 53 percent in April, from 5,675 to 2,634.  By May, collisions began to gradually trend back towards more typical levels yet the yearly total for 2020 was 21 percent lower than 2019.

Crashes per Month

Injuries from Motor Vehicle Collisions

Collision injuries followed a similar, yet even more dramatic pattern – down 29 percent year over year.  Injuries dropped 29 percent in March and 61 percent in April before slowly climbing throughout the year.  Interestingly, injuries dropped again in November and December as outbreaks raged across the country and experts warned against holiday travel.

Motor vehicle injuries 2020 chart

Fatalities from Motor Vehicle Collisions

Fatal collisions and traffic deaths occur at a much lower volume and are much more difficult to predict.  As a result, they don’t seem to follow the pattern of collisions and injuries at all and actually ended the year with a 9 percent increase over 2019.  Given that collisions were down 22 percent and fatalities increased, it appears that the pandemic actually made Bexar County roads considerably more deadly than in 2019.  

Fatals per Month Chart

 

Month Crashes 2020 Crashes 2019 Injuries 2020 Injuries 2019 Fatals 2020 Fatals 2019
Jan 5028 4876 1774 1762 14 23
Feb 4943 4715 1567 1722 22 16
Mar 4002 5420 1450 2053 15 14
Apr 2634 5675 845 2155 15 12
May 3386 5176 1124 1984 15 7
Jun 3859 5115 1330 1971 16 19
Jul 3820 5020 1289 1998 6 15
Aug 4081 5420 1429 2038 14 19
Sep 4099 5337 1369 1994 14 14
Oct 4769 5671 1673 2118 29 15
Nov 4386 5270 1517 1856 21 15
Dec 4419 5349 1411 2035 18 13

How This Study Can Help

The saying goes that ‘knowledge is power’.  We believe understanding where collisions occur and being informed of high-risk areas can empower drivers to adjust their routes and driving behavior accordingly.  Through our work, we’ve seen the impact that serious motor vehicle collisions have on people’s lives first hand.  We approached this project with the belief that if our analysis can prevent just one collision it would be worth it.

In addition to reading this study, there are several ways drivers can increase their safety overall:

  1. Avoid distractive behaviors, including cell phone use, eating and drinking, and anything that takes your eyes off the road.
  2. Never drink and drive.
  3. Perform all necessary routine vehicle maintenance.
  4. If you are drowsy, pull over or allow someone else to drive.  Drowsy driving can be nearly as dangerous as drunk driving.
  5. Maintain a safe distance from other vehicles
  6. Obey all traffic control devices and speed limits.  Especially in intersection collisions, disregarding stop signs, stop lights, and merge signs can significantly increase your likelihood of an accident.
  7. Don’t expect other drivers to drive safely.  While we constantly rely on other drivers to stay safe, being aware of erratic behavior around you can help you preemptively avoid a potential collision.

Data and Fair Use

This study is based on 2020 and 2019 collision data from the Texas Department of Transportation.   For more details or information on the study methodology please contact us.  If you would like to report on or republish any of the data, maps or images used in this study, please provide Villarreal & Begum Law Firm credit by linking to this page.