In 1919, Beaver Wade Day (1884–1931) joined the firm, and it was renamed to Toltz, King and Day. The firm designed the Stearns County Courthouse in St. Cloud, Minnesota in 1920 and provided structural engineering services for the Saint Paul Union Depot in 1923. In 1926, they completed the design of the Robert Street Bridge spanning the Mississippi River in St. Paul. The bridge, a rainbow arch design, had several challenges that resulted in its unusual form. The bridge had to reach Kellogg Boulevard at street level at the top of the bluff, while providing enough clearance underneath for the raised platform at the Saint Paul Union Depot, the Chicago Great Western lift bridge, and the passage of riverboats on the river. The bridge was rebuilt in 1989 by the same firm, now known as TKDA.
