Below are several charts and maps tabulating Annual Average Daily Traffic (AADT) counts on San Antonio's freeways for 2009.  The comments, rankings and calculations are my own analysis based on raw data from TxDOT.

The stats below are area-wide.  To see traffic counts for just a specific corridor, see that freeway's individual page elsewhere on this site.

Summary

Overall traffic was flat in 2009 compared to 2008.  Bexar County 2009 VMT was virtually identical to the previous year.  As is usual, though, some locations did note significant increases in traffic.  Interestingly, of the top 20 growth locations over the year, all but three were either on Loop 410 or immediately adjacent to it. 

After several years, Loop 410 regained its title as the city's busiest freeway.  Loop 410 at McCullough, Blanco, and Vance Jackson all tied for the busiest location, dethroning I-10 at Callaghan.  Two locations on I-35 dropped below the 200,000 vehicles per day (VPD) threshold this year (at Rittiman and at McCullough), but the three top locations on Loop 410 moved above that mark; this is likely due to the completion of construction in that area the year before.  The top traffic count dropped this year to 215,000 from last year's 238,000.

Over the past decade, the top spots continue to be concentrated on Loop 1604 and SH 151.  Two other clusters of increases include Loop 410 South and I-10 West near Loop 1604.  US 281 north of Loop 1604 rounds-out the top 20 growth locations since 1999.

General statistics

Number in parenthesis is the San Antonio Urbanized Area's rank nationally for that category.

• Centerline miles of freeway: 233 (22)
  • Interstate highway miles: 143
  • US and State highway freeway miles: 90
• Lane miles of freeway: 1,253 (23)
• Daily vehicle miles driven on freeways: 19,465,000 (22)
• Average daily traffic per freeway segment: 83,540 (50)
• Average daily traffic per freeway lane: 15,535 (48)
• Percent of local roads that are freeways: 4.3% (58)
• Percent of total local daily traffic carried on freeways: 51.7% (21)

(Source: Federal Highway Administration, 2008 data)

Average 2009 daily traffic by location

Freeway traffic volumes (2009 AADT)

	FWY	LOCATION	2009 AADT	'08-'09 % CHG
1		Blanco Rd.	215,000	+16.85%
		McCullough Ave.	215,000	+18.13%
		Vance Jackson Rd.	215,000	+11.40%
2		Callaghan Rd.	212,000	-10.92%
3		DeZavala Rd.	205,000	-7.24%
4		N of Walzem Rd.	199,000	+0.51%
5		S of Rittiman Rd.	193,000	-6.76%
		Evers Rd.	193,000	+20.63%
6		Thousand Oaks	191,000	-3.54%
7		McCullough Ave.	186,000	-8.37%
8		S of Walzem Rd.	181,000	-6.70%
9		Crossroads Blvd.	180,000	+5.26%
10		Frio St.	179,000	-3.76%
11		O'Connor Rd.	173,000	-4.42%
12		S. Laredo St.	168,000	-9.68%
13		Nakoma Rd.	165,000	-12.23%
14		S of Bandera Rd.	164,000	+10.81%
15		S of Loop 1604	153,000	-8.38%
16		N. New Braunfels Ave.	152,000	-12.64%
17		Huebner Rd.	149,000	-21.99%
18		Nacogdoches Rd.	144,000	0.00%
19		Pat Booker Rd.	141,000	-4.73%
		Theo Ave.	141,000	-12.96%
		Brookhollow Dr.	141,000	-10.76%
20		S. Zarzamora St.	140,000	-11.39%
21		Broadway	139,000	-10.32%
22		Salado Creek	137,000	-11.04%
23		Hildebrand Ave.	134,000	-8.22%
24		Guadalupe Co. line	130,000	-6.47%
25		S of I-35	129,000	+0.78%
		Isom Rd.	129,000	+12.17%
26		E of Probant St.	127,000	+4.10%
		W of US 281N	127,000	-4.51%
		Cupples Rd.	127,000	-12.41%
27		Perrin-Beitel Rd.	126,000	-3.82%
28		W of Probant St.	125,000	0.00%
29		Henderson Pass	124,000	-10.79%
30		Sunset Rd.	122,000	-5.43%
31		Binz-Engelmann Rd.	118,000	-10.61%
		Bitters Rd.	118,000	+8.26%
32		Tradesman Dr.	117,000	-6.40%
33		Loop 410	114,000	+18.75%
34		La Cantera Pkwy.	113,000	+1.80%
		Basse Rd.	113,000	-7.38%
35		Carolina St.	111,000	-3.48%
		Fair Ave.	111,000	+2.78%
36		N of US 90W	109,000	+12.37%
37		La Cantera Pkwy.	107,000	+7.00%
38		N of SW Military Dr.	104,000	-12.61%
		Gold Canyon Dr.	104,000	-8.77%
		Sonterra Blvd.	104,000	+1.96%
39		Jones-Maltsberger Rd. N	103,000	+1.98%
40		Hausmann Rd.	99,000	+5.32%
41		N of Bandera Rd.	95,000	+4.40%
42		Lookout Rd.	88,000	-12.00%
43		Valley Hi Dr.	85,000	+7.59%
44		O'Connor Rd.	83,000	-16.16%
		E of Potranco Rd.	83,000	+7.79%
45		S. Hackberry St.	82,000	-13.68%
46		S. New Braunfels Ave.	77,000	0.00%
47		Dominion Dr.	76,000	-3.80%
		Green Mountain Rd.	76,000	-14.61%
48		Pat Booker Rd.	75,000	0.00%
49		S of SW Military Dr.	74,000	-10.84%
50		S of Bandera Rd.	71,000	+5.97%
		E of Loop 410	71,000	-6.58%
51		WW White Rd. N	70,000	+6.06%
		W of Potranco Rd.	70,000	+4.48%
52		N of FM 78	69,000	+11.29%
53		E. Houston St.	67,000	-5.63%
		Martin Luther King Jr. Dr.	67,000	-8.22%
		E of Loop 410	67,000	+11.67%
54		N of US 90	66,000	+29.41%
55		WW White Rd.	65,000	-10.96%
		S of I-10E	65,000	+6.56%
56		S of E. Houston St.	63,000	+26.00%
57		Old Hwy 90	62,000	-11.43%
58		N of SW Military Dr.	61,000	-1.61%
59		N of US 181	58,000	+13.73%
60		Ackerman Rd.	56,000	-26.32%
61		Pearsall Rd.	50,000	+6.38%
62		W of FM 78	49,000	-14.04%
63		N of Loop 410	48,000	-2.04%
64		Southcross Blvd.	47,000	+4.44%
65		Hunt Ln.	46,000	-11.54%
66		E of I-37	44,000	+7.32%
67		S. Presa St.	43,000	+2.38%
		W of I-35S	43,000	+7.50%
68		E of Loop 1604	42,000	+2.44%
69		Fischer Rd.	41,000	+5.13%
70		S of Poteet-Jourdenton Fwy.	40,000	-18.37%
71		W of Roosevelt Ave.	35,000	-12.50%
72		N of New Laredo Hwy.	34,000	-20.93%
73		E of Roosevelt Ave.	33,000	-5.71%
74		W of Loop 1604	31,000	-8.82%
		Nacogdoches Rd.	31,000	-6.06%
75		W of Poteet-Jourdenton Fwy.	30,000	-3.23%
76		Perrin-Beitel Rd.	29,000	-6.45%
		Wetmore Rd.	29,000	-12.12%
77		E of Poteet-Jourdenton Fwy.	28,000	-17.65%
78		E of FM 78	27,000	-10.00%
79		Weidner Rd.	15,600	-4.29%
80		S of US 90	13,600	+5.43%
81		At Port SA	11,700	-3.31%

Top 20 AADT locations (2009)

One year positive or negative change (2008-2009)

Top 20 one-year growth locations

	FWY	LOCATION	'08-'09 % CHG
1		N of US 90	+29.41%
2		S of E. Houston St.	+26.00%
3		Evers Rd.	+20.63%
4		Loop 410	+18.75%
5		McCullough Ave.	+18.13%
6		Blanco Rd.	+16.85%
7		N of US 181	+13.73%
8		N of US 90W	+12.37%
9		Isom Rd.	+12.17%
10		E of Loop 410	+11.67%
11		Vance Jackson Rd.	+11.40%
12		N of FM 78	+11.29%
13		S of Bandera Rd.	+10.81%
14		Bitters Rd.	+8.26%
15		E of Potranco Rd.	+7.79%
16		Valley Hi Dr.	+7.59%
17		W of I-35S	+7.50%
18		E of I-37	+7.32%
19		La Cantera Pkwy.	+7.00%
20		S of I-10E	+6.56%

Top 20 one-year AADT growth locations (2008-2009)

---

Top 20 growth locations since 1999

	FWY	LOCATION	'99-'09 % CHG
1		E of Loop 1604	+388.37%
2		E of Loop 410	+324.05%
3		W of Potranco Rd.	+204.35%
4		E of Potranco Rd.	+151.52%
5		Sonterra Blvd.	+121.28%
6		N of US 90	+112.90%
7		S of Bandera Rd.	+91.98%
8		Hausmann Rd.	+90.38%
9		N of Bandera Rd.	+90.00%
10		La Cantera Pkwy.	+71.21%
11		Pat Booker Rd.	+66.67%
12		La Cantera Pkwy.	+64.62%
13		E of I-37	+62.96%
14		Lookout Rd.	+60.00%
15		Green Mountain Rd.	+58.33%
16		S of Loop 1604	+54.55%
17		S. Presa St.	+53.57%
18		De Zavala Rd.	+48.55%
19		Southcross Blvd.	+46.88%
20		E of FM 78	+45.95%

Top 20 AADT growth locations 1999-2009