IL 390 Ramp Q9/EOA Bridge


IDOT Structure Number 022-9516. Our structural engineer performed a thorough design check of the bridge substructure and superstructure when one of span lengths changed. The structure is a partially curved six-span bridge with 82" plate girders on stub abutments and multi-column piers. Bridge length was 1062 ft (116‘-145‘-150‘-205‘-215‘-181‘). Images below are samples of surveying work being done in various locations.

Survey at dawn.

Survey retention pond mapping.

Image of strip mine pits.

Surveying in the winter.