The two level interchange with left side ramps joining IH 10 and IH 410 on the North Side of San Antonio was rebuilt over an eight year period. The two phase, $134 million project project commenced in September 1999. The $50 million initial phase was slated for a mid-2003 completion, and the overall project by 2006.2
Joining IH 10 east with IH 410, two of the eight ramps built at the upgraded exchange were scheduled to open on May 25, 2002, but an oil fire at the construction site pushed back the opening to June 7.3,4 The next ramp debuting to motorists was the 3,500 long flyover joining IH 410 east with IH 10 west. Anticipated to be ready for motorists in August 2002,5 the longest freeway ramp in San Antonio finally did on November 13, 2002.6
The second half of the IH 10/410 interchange project was anticipated to start by September 2002 and cost $82 million.4 Two additional ramps eventually opened from Loop 410 to IH 10 east on December 17, 2005. Completion of the ramps from IH 10 west to IH 410 however fell behind schedule at that point, with overall construction on the project expected pushed back until 2008.7 The last two flyovers were finally ready for traffic on the morning of November 8, 2007.8
Construction modernized IH 410 between IH 10 at Balcones Heights and U.S. 281 (McAllister Freeway) at Shearer Hills – Ridgeview in north San Antonio. Work widened the narrow, below-grade freeway and added a systems interchange with U.S. 281 (McAllister Freeway) at San Antonio International Airport (SAT). Costing $155 million,9 the exchange directly linked the two freeways, which previously utilized San Pedro Avenue to connect with one another.
The lack of a direct interchange was the result of a 14 year delay in construction of the McAllister Freeway, which opened southward to IH 35 and IH 37 at Downtown San Antonio in 1978. Following two referendums and multiple lawsuits, a new federal law allowed construction to proceed along U.S. 281 through Olmos Park Basin and Brackenbridge Park. However development ensued along IH 410 at the cross roads with U.S. 281 during that time period, driving up right of way costs.9
Initial projections for work on the IH 410/U.S. 281 interchange forecast a ten year construction period. An accelerated time table was achieved with a change in state law regarding bonds, and crews got underway at the exchange in 2005. The first of eight ramps connecting the two freeways opened in June 2007. The last two were completed on June 9, 2008. Succeeding construction expanded IH 410 from six to ten lanes between McCullough Avenue and Broadway by July 2008 and overall from Austin Highway to Culbera Road by 2010.9