I-410
San Antonio Area Freeway System
Interstate 410
(John B. Connally Loop)

 

Home > Texas Highwayman Pages > San Antonio Freeway System > Loop 410
I-410 highlight map This page covers Interstate 410 from the Fratt Interchange (at I-35 north of Walzem) counter-clockwise around the central city to the BAMC Interchange (at I-35 near Rittiman). Technically, Loop 410 continues north multiplexed with I-35 to the Fratt Interchange, but because the I-35 mile markers and exit numbers are carried-through along that stretch, information on that segment can be found on the I-35 North page.

Length: 49 miles (53 miles including multiplexed section on I-35)


On this page:


Description

Interstate 410, known locally as Loop 410 or just "The Loop", is really a tale of two freeways.  The southern half (south of US 90) rings the edge of the city and resembles and functions more like a rural Interstate than an urban freeway.  Meanwhile, the northern arc is one of the most heavily traveled freeways in the region and is home to most of the city's shopping malls as well as a major chunk of the area's suburban office space.  The Loop also provides access to San Antonio International Airport, the South Texas Medical Center, the Southwest Research Institute, the Westover Hills area and Sea World of Texas, the National Security Agency campus, Ft. Sam Houston, Lackland AFB, Brooks City-Base, Stinson Municipal Airport, the San Antonio Missions Trail National Park, Palo Alto College, the Toyota plant and adjacent facilities, and the cities of Castle Hills, Balcones Heights, Leon Valley, Kirby, and Windcrest.

Land along the northern arc is heavily developed.  Office towers, shopping malls, hotels, and other commercial developments dominate the landscape, interspersed with dense residential areas.  South of US 90, development is much more dispersed with large tracts of vacant land, although this area has been seeing new growth in recent years.

In 2000, TxDOT started a major program to expand Loop 410 to 10 lanes across the Northside of San Antonio.  Click here for more info on that expansion.

Loop 410 intersects with I-35 North at two places: Loop 410 North intersects I-35 north of Walzem Rd. at the Fratt Interchange, and Loop 410 East intersects I-35 south of Rittiman Rd. at the BAMC Interchange. Both highways are multiplexed between these interchanges.
 


Roadway details

LANES
I-410 lanes map
  • 6 lanes from I-35 (Fratt Interchange) to NW Military
  • 8 lanes from NW Military to I-10 West
  • 10 lanes from I-10 West to Callaghan
  • 6 lanes from Callaghan to Valley Hi
  • 4 lanes from Valley Hi to I-35 North (BAMC Interchange)

Room for an additional lane in each direction is available between NW Military and I-10.  This lane will be marked with the I-10/410 interchange and Loop 410 expansion projects are completed.
 

ACCESS ROADS
I-410 access roads map
  • Access roads along entire route
  • Continuous access roads interrupted at several locations:
    • I-10 West (Northwest Interchange)
    • I-35 South
    • I-37 South
    • I-10 East
    • SPRR and UPRR near mile marker 1
  • Eastbound access road thru-traffic requires a left turn at Harry Wurzbach
EXITS

Click here for a list of I-410 exits
 

SPEED LIMITS
I-410 speed limit map
  • 60 mph north of US 90
  • 70 mph south of US 90
SPECIAL FEATURES & NOTES
I-410 special features map
  • TransGuide coverage from I-35 North to Ingram
  • VIA Metropolitan Transit Park & Ride locations:
    • Randolph: Fratt Interchange
    • Crossroads: I-10 West
  • Left exit from northbound I-410 to southbound I-35/Binz-Engelman
  • No directional interchanges at US 281 North and SH 151
  • Multiplexes:
    • Four miles of Loop 410 multiplexed with I-35 North from Fratt Interchange to BAMC Interchange
    • Seventeen miles of SH 16 multiplexed along western arc from Bandera Rd. (Exit 13) to Poteet-Jourdanton Hwy. (Exit 49)
    • Three miles of US 281 multiplexed from I-37 (Exit 41) to Roosevelt (Exit 44)
TRAFFIC
I-410 traffic map
Traffic volume legend
 

Very heavy along northern arc (US 90 West to I-35 North).  Some of the chronic congestion approaching I-10 West (Northwest Interchange) has been eased with the expansion of Loop 410 from NW Military to the interchange and the addition of extra auxiliary lanes on the egresses from the interchange.  However, construction to expand the freeway will produce worsening congestion from Callaghan to Culebra and Blanco to I-35 for the next few years.

The northern section previously was San Antonio's busiest freeway, exceeding 200,000 vehicles per day during the 1999-2000 period.  Heavy construction has temporarily reduced overall traffic along the northern section of 410.  Another interesting trend is the increasing traffic on the southern and eastern sections.  The fastest growing areas for traffic on 410 are all south of US 90.

AVERAGE ANNUAL DAILY TRAFFIC
LOCATION 1990 1996 2000 2004 2005 2006 '96-'06
% CHG
Austin Hwy. 109,000 119,000 127,000 117,000 120,200 114,000 -4%
Nacogdoches Rd. 155,000 162,000 178,000 151,000 153,650 157,000 -3%
Broadway 172,000 178,000 189,000 162,000 164,500 168,000 -6%
McCullough Ave. 187,000 185,000 179,000 159,000 162,000 165,000 -11%
Blanco Rd. 190,000 184,000 199,000 164,000 161,030 171,000 -7%
Vance Jackson Rd. 180,000 175,000 201,000 165,000 169,260 172,000 -2%
Evers Rd. 142,000 168,000 177,000 174,000 177,350 181,000 +8%
S of Bandera Rd. 116,000 145,000 157,000 144,000 163,770 150,000 +3%
N of US 90W 79,000 96,000 109,000 101,000 103,510 105,000 +9%
Valley Hi Dr. 51,000 64,000 82,000 81,000 82,460 84,000 +31%
Pearsall Rd. 25,000 33,000 46,000 48,000 49,890 50,000 +52%
W of I-35S 20,000 26,000 39,000 42,000 43,060 44,000 +69%
W of Poteet-Jourdanton Hwy. 14,000 18,600 33,000 30,000 30,490 31,000 +67%
E of Poteet-Jourdanton Hwy. 14,300 18,000 33,000 34,000 32,760 35,000 +94%
W of Roosevelt Ave. 17,100 22,000 38,000 37,000 38,270 38,000 +73%
E of Roosevelt Ave. 16,800 22,000 37,000 35,000 36,410 36,000 +64%
S. Presa St. 18,700 25,000 36,000 40,000 40,240 42,000 +68%
E of I-37 18,700 25,000 35,000 42,000 43,370 44,000 +76%
Southcross Blvd. 22,000 29,000 39,000 47,000 47,930 49,000 +69%
S of E. Houston St. 34,000 49,000 60,000 65,000 66,590 58,000 +18%
S of I-10E 45,000 54,000 65,000 70,000 71,590 73,000 +35%
WW White Rd. N 52,000 60,000 69,000 75,000 76,590 78,000 +30%
N of FM 78 55,000 60,000 65,000 66,000 69,060 69,000 +15%


Construction projects

Nacogdoches Rd. to Austin Hwy.: Construction began in late 2006 to widen the freeway to ten lanes and revise entrance and exit ramps.


At US 281 interchange:
Click here for information on the US 281/Loop 410 interchange project.

Blanco Rd. to McCullough Ave.: Construction is nearing completion to widen Loop 410 to ten lanes from and reconstruct the San Pedro interchange by removing the obsolete cloverleaf and replacing it with a standard surface street interchange with access road bypass flyovers.

At I-10 interchange: Click here for information on the I-10/Loop 410 interchange project.

Callaghan Rd. to Culebra Rd.: Work is progressing to widen the freeway to 10 lanes, adjust ramps, and build two elevated connector ramps at Bandera Rd.

Click here for more info on the overall Loop 410 expansion project.

Click here for the latest status report on these projects.


Future plans

TxDOT plans to expand the section from Culebra to US 90 West from six to eight lanes and rebuild the US 90 interchange.  No timetable has been set for that project yet.

The Loop 410/I-10 East interchange was recommended for non-specified improvements in the I-35 North Major Investment Study.


History

The I-410 designation was authorized by Minute Order 62561 (July 31, 1969).  Named Connally Loop for former Texas Governor John B. Connally who assisted San Antonio greatly during the HemisFair World's Fair in 1968.

The northern part of today's I-410 route was originally part of Loop 13 (the southern half of which still exists today as WW White and Military Dr on the south and east sides.)  The section from the Fratt Interchange south to WW White was authorized in 1941, and the section from the Fratt Interchange west to NW Military was in place as early as 1950.  In 1951, the first plan to start extending the loop westward routed it from NW Military to the intersection of Fredericksburg and Callaghan.  By 1957, however, the present-day route from NW Military around the west side of the city to I-35 South was proposed, as was the eastern arc from Rittiman south to Sulphur Springs.  That western section, along with the southern segment from I-35 to Roosevelt, was completed by 1964.  The remainder of the loop was complete by 1967, including an upgrade of the original highway from Austin Hwy. to NW Military to freeway standards.  That section, however, was signed as State Loop 410 until August 1969, while the rest of the new freeway was designated I-410 as it was built.

The section from Ingram to I-35 North was expanded to six lanes in the late '70s and early '80s. The Fratt interchange was rebuilt in a spectacular project between 1980 and 1983. The section from Ingram to Valley Hi was expanded to six lanes around 1987.  An extra lane was added westbound from I-10 West to Babcock in 1996.  The segment from West Ave. to Cherry Ridge was expanded to 10 lanes (eight actually marked for the time being) in 1997.  TransGuide coverage was added from Ingram Rd. to I-35 North in 1999.  The section between McCullough and US 281 was widened and prepared for the planned 218/410 interchange in 2000 and 2001.  The section from I-10 to Callaghan was widened to 10 lanes from 2001-2003, and the section from West Ave. to Blanco widened to 10 lane (eight currently-marked lanes) in 2005.


This page last updated
February 26, 2008 08:41 PM