Interstate 10 is now three lanes both ways between Tucson and Casa Grande, but your commute probably won’t get faster. The Arizona Department of Transportation projects I-10 could be bumper-to-bumper all the way to Casa Grande during rush hour by 2035. The route currently carries around 60,000 vehicles daily, and that could quadruple depending on the region’s growth, according to an ADOT spokesperson. John Moffatt, director of economic development for Pima County, said those backups won’t just be bad for commuters. He said they will hurt trade with Mexico. “Trucks are like water. They find the path of least resistance...