I dug into the city archive’s microfilm stack last night and found a set of drawings from 1893—those were the original plans for the stone arch bridge you’re talking about. The blueprints are in the public library’s special collections, on the third floor, and the notes indicate a deliberate choice of limestone sourced from the hills north of town. If the council is planning a billboard, that could clash with the bridge’s original aesthetic. I’ll pull the PDF copies for you so you can spot any discrepancies before the proposal gets stamped. Just let me know what time works for you, and we’ll go over it together.