Developers plan mixed-use 'gateway' to downtown Fargo at corner of Broadway and Main Developers will transform what is now parking lot on the corner of Broadway and Main Avenue into a mixed-use building 7:48 pm, Dec. 28, 2020 × This rendering shows the possibilities of how a proposed new headquarters for JLG Architects and Development along with apartments and condos will look at the corner of Main Avenue and Broadway. An arts park on the west side of the building is also part of the plans. JLG Architects / Special to The Forum FARGO — A six-story mixed-use building with a public arts plaza on the corner of Main Avenue and Broadway that will serve as a "gateway" to downtown took its first step in development on Monday night, Dec. 28.