👉 Undertruss is a type of bridge or structure that spans two or more lanes, typically with a lower deck and an upper deck. These structures are usually built on top of existing roads or other bridges to create additional space for vehicular traffic while providing support for pedestrians and cyclists. Undertrusses can be designed in various ways, depending on the specific needs and constraints of the project. They may be used as a temporary solution during construction or maintenance work, or they may be permanent structures that are