The DoubleLine Infrastructure Income Fund - Class I (BILDX) is a mutual fund that focuses on investing in income-generating infrastructure assets. These assets may include toll roads, airports, utilities, and other essential services. The fund aims to provide investors with a steady stream of income through dividends and interest payments, while also seeking long-term capital appreciation. With a focus on infrastructure, the fund may offer a stable and defensive investment option for those looking to diversify their portfolio.