Interstate 410

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Interstate 410 marker

Interstate 410
Connally Loop
I-410 highlighted in red
Route information
Maintained by TxDOT
Length49.49 mi[1] (79.65 km)
Major junctions
Beltway around San Antonio
US 87
US 90
US 281
I-37 SH 151
Highway system

Interstate 410 (abbreviated I-410, and colloquially called Loop 410) is a loop route of Interstate 10 around San Antonio, Texas. It is identified as Connally Loop in honor of former Texas governor John Connally.

Route description[edit]

410 near the 410/281 Interchange in Uptown San Antonio
I-410's interchange with I-37 on the southeast side of San Antonio.

Interstate 410 circumnavigates the city of San Antonio, officially beginning and ending at the junction with Interstate 35 on the southwest side of the loop. There are vast differences between the northern arc and southern arc of the loop. The northern arc serves the heavily urbanized portions of San Antonio and is currently being upgraded to as many as five lanes in each direction. The southern arc resembles more of a rural interstate as it transverses for the most part undeveloped portions of San Antonio as a two lane interstate. I-410 intersects I-10 twice, I-35 twice, I-37 once, as well as U.S. Highway 90, US 281, and State Highway 151, all freeways in the San Antonio metro area with the exception of Loop 1604, which forms a secondary loop around the city, and PA 1502 (Wurzbach Parkway), which is located about 2 miles outside the loop on the north side. I-410 serves San Antonio International Airport, Lackland AFB, Fort Sam Houston, South Texas Medical Center, Southwest Research Institute, and Toyota Motor Manufacturing Texas.[3]


Texas Loop 410.svg

Like most cities in Texas, San Antonio was served by a loop around the city long before the arrival of the Interstate Highway System. Loop 13, although not a freeway, served in this role up until the 1950s, when many of San Antonio's freeways were constructed. The northern half of Loop 13 followed the current path of I-410 while the southern half still exists on the south side of San Antonio. Much of the freeway was proposed during the mid-1950s with construction beginning on the northwest portion of the loop near I-10. On October 15, 1960, Loop 13 from I-10 to I-35 was redesignated as Loop 410 for continuity purposes. By 1961 the freeway had been completed from I-35 on the southwest side to just east of US 281 near the airport where it continued once to the east as a 4-lane highway to I-35. By 1964 the southern arc had been extended eastward from I-35 to Roosevelt Avenue and was under construction from Roosevelt to I-35 on the east side of the city. By 1967 the eastern arc had been completed to Interstate Highway standards and the remaining portion from US 281 to I-35 on the cities north side had been completely upgraded to Interstate Highway standards, but still carried the State Loop 410 designation until July 31, 1969 when it officially became Interstate 410.[2]

Due to the city growing primarily to the north, I-410 required upgrading along this stretch. It was expanded to six lanes in the late 1970s and early 1980s from Ingram Road to I-35 North. It was further expanded to six lanes from Ingram to Valley Hi Road in 1987. An additional westbound lane was added from I-10 West to Babcock Road in 1996.

I-410 was widened from the late 1990s through early 2010s along its entire northern arc from Culebra Road to Austin Highway, with five lanes each way and intersection upgrades at I-10 and San Pedro, and an entire new interchange at US 281.,[4][5] officially called the "San Antonio Web".[6]

Exit list[edit]

Exit numbers correspond to mileage from the south junction with I-35.[3] The entire highway is in Bexar County.

San Antonio1Frontage Road
2 FM 2536 (Old Pearsall Road)
3ARay Ellison DriveSigned as exit 3 northbound
3BMedina Base RoadNorthbound exit is via exit 3
4Valley Hi Drive – Lackland AFB
6 US 90 (Cleto Rodriguez Freeway) – San Antonio, Del Rio
7Marbach Road
8Lakeside ParkwaySouthbound exit and entrance
9A SH 151 (Stotzer Freeway) – SeaWorldSigned as exit 9 northbound
9BWest Military DriveSouthbound exit and northbound entrance
10Culebra RoadFormer FM 3487
11Ingram Road
12Exchange ParkwaySouthbound exit and entrance
13A SH 16 north / Spur 421 (Bandera Road) – Leon Valley, San AntonioNorth end of SH 16 concurrency; signed as exits 13A and 13B (north) westbound
13BEvers RoadWestbound exit and eastbound entrance; westbound is via exit 14A
14ASummit ParkwayWestbound exit and entrance
14BCallaghan RoadSigned as exit 14 eastbound
14C Babcock RoadEastbound exit is via exit 14, access to South Texas Medical Center
15 Loop 345 (Fredericksburg Road) – Balcones HeightsAccess to South Texas Medical Center and Methodist Texan Hospital
16 I-10 / US 87 (McDermott Freeway) – San Antonio, El PasoI-10 exit 564
17ACherry Ridge DriveEastbound exit and westbound entrance, westbound exit is via exit 17
17BVance Jackson RoadSigned as exit 17 westbound
Castle Hills18Jackson-Keller Road, West Avenue
19AHoneysuckle LaneEastbound exit is via exit 18
19B FM 1535 (Military Highway) – Castle HillsSigned as exit 19 eastbound
19 FM 2696 (Blanco Road)Westbound exit is via exit 20A
San Antonio20A Spur 537 north (San Pedro Avenue)Signed as exit 20 eastbound
20BMcCullough AvenueEastbound exit is via exit 20
21A US 281 (McAlister Freeway) – Johnson City, Downtown"San Antonio Web", fully opened June 9, 2008[5]
21 Airport Boulevard, Wetmore Road – Int'l AirportSigned as exit 21B eastbound
22BroadwayNo eastbound entrance
23Nacogdoches RoadNo westbound entrance, westbound exit is via exit 24
24Harry Wurzbach Road – Fort Sam Houston
25A Starcrest DriveSigned as exit 25 eastbound, access to Northeast Baptist Hospital
25B FM 2252 (Perrin-Beitel Road)Eastbound exit is via exit 25
26A Loop 368 south – Alamo HeightsSigned as exit 26 westbound
26BInterchange Parkway, Perrin Creek DriveEastbound exit and westbound entrance
27 I-35 north (Pan Am Expressway) – AustinNorth end of I-35 concurrency; signed as exit 166 northbound; freeway assumes I-35's exit numbers
166ARandolph Boulevard – WindcrestNorthbound exit and westbound entrance
165 FM 1976 (Walzem Road)
164BEisenhauer Road
163 I-35 south (Pan Am Expressway) – DowntownSouth end of I-35 concurrency; southbound exit and northbound entrance
30Rittiman Road, Space Center DriveNorthbound exit and entrance
30Binz-Engleman RoadSouthbound exit and northbound entrance
31A FM 78 – KirbySigned as exit 32 northbound
31 I-35 south (Pan Am Expressway) / Binz-Engleman Road – San AntonioNorthbound left exit and southbound entrance
31B Loop 13 (W.W. White Road)No northbound exit
32Dietrich RoadSouthbound exit only
33 I-10 (Lopez Freeway) / US 90 / SH 130 north – Downtown San Antonio, HoustonNorth end of SH 130 concurrency; I-10 exit 581
34 FM 1346 (East Houston Street)
35 US 87 (Rigsby Avenue) – Victoria, La Vernia
37Southcross Boulevard/New Sulphur Springs Road, Sinclair Road
39 Spur 117 (W.W. White Road)
41 I-37 / US 281 north (Adams Freeway) – San Antonio, Corpus ChristiEast end of US 281 concurrency; I-37 exit 133, access to Mission Trail Baptist Hospital
42 Spur 122 (South Presa Street) / Southton Road
43Espada Road – San Antonio Missions National Historical ParkWestbound exit is via exit 44
44 US 281 south / Spur 536 (Roosevelt Avenue) – PleasantonWest end of US 281 concurrency
46Moursund Boulevard
47University Way – Texas A&M University–San AntonioEast exit and east entrance
48Zarzamora Street
49 SH 16 south (Palo Alto Road) / Spur 422 (Poteet-Jourdanton Freeway) – PoteetEast end of SH 16 concurrency
51 FM 2790 (Somerset Road)
53 I-35 (Pan Am Expressway) – San Antonio, LaredoSouth end of SH 130 concurrency; I-35 exit 145A
1.000 mi = 1.609 km; 1.000 km = 0.621 mi


Route map:

KML is from Wikidata
  1. ^ Federal Highway Administration. "Route Log - Auxiliary Routes of the Eisenhower National System of Interstate and Defense Highways - Table 2". Retrieved 2008-02-26.
  2. ^ a b Transportation Planning and Programming Division (n.d.). "Interstate Highway No. 410". Highway Designation Files. Texas Department of Transportation. Retrieved 2008-02-26.
  3. ^ a b Google (2008-02-24). "overview map of I-410" (Map). Google Maps. Google. Retrieved 2008-02-24.
  4. ^ Driscoll, Patrick (2007-06-19). "Decades in waiting, ramp open". San Antonio Express-News. Archived from the original on September 29, 2007. Retrieved 2008-02-26.
  5. ^ a b Driscoll, Patrick (2008-06-10). "U.S. 281/Loop 410 interchange ramps are complete". San Antonio Express-News. Archived from the original on June 11, 2008. Retrieved 2008-06-20.
  6. ^ Driscoll, Patrick (2006-01-16). "Now there's a name for it". San Antonio Express-News. Archived from the original on 2008-02-23. Retrieved 2008-06-20.