Over It, Under It, & Through It: Navigating Complexity on Mixed-Alignment Rail Programs

The expansion of passenger transit systems remains a priority in the United States. Last year, transit agencies opened major system expansions throughout the country, including Valley Metro ’s 5.5 mile South Central Extension/Downtown Hub in Phoenix and the Metro Gold Line Foothill Extension Construction Authority ’s 9.1 mile extension of LA Metro’s A Line . Additional groundbreakings (e.g. Sound…