US 281 to I-35 on the city's 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 I-410. 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 interchange upgrades at I-10 and San Pedro, and an entire new interchange at US 281., officially called the "San Antonio Web". Exit list Exit numbers correspond to mileage from the south junction with I-35. References 410 10-4 4 10-4 410 Transportation in Bexar County, Texas