Located in Northbrook, this concrete arch bridge crosses Techny Road near Techny Prairie Park.
Built in 1911, this bridge features a single concrete arch span, set onto concrete substructures. In addition, another span bridge crosses a branch of the Chicago River nearby.
The concrete arch design is common for new constructions between 1910 and 1913 for the C&NW. During this time period, many structures were built with this same design for all new routes.
Overall, the bridge appears to be in poor condition, with some significant deterioration. primarily spalling.
The author has ranked the bridge as being locally significant, due to the common design.
The photo above is an overview.