Illinois Administrative Code (Last Updated: March 27, 2024) |
TITLE92. TRANSPORTATION |
PART540. CONSTRUCTION OF PEDESTRIAN OVERPASS STRUCTURES ON PARTIALLY ACCESS-CONTROLLED EXPRESSWAYS AND OTHER STATE HIGHWAYS |
§540.80. Design of Overpass Structures
Latest version.
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All overpass structures will be designed for a vertical clearance, over the pavement of 17' - 3". Horizontal clearances from the edge of roadway to piers or abutments will comply with current design geometric standards for structures as contained in Section 4-005 and 4-010 of the Design Manual. All overpass structures will be designed with protective fencing to prevent objects from accidentally being dropped on the traffic below.