(625 ILCS 5/11-608)
(from Ch. 95 1/2, par. 11-608)
Special speed limitation on elevated structures.
(a) No person shall drive a vehicle over any bridge or other
elevated structure constituting a part of a highway at a speed which is
greater than the maximum speed which can be maintained with safety to
such bridge or structure, when such structure is sign posted as provided
in this Section.
(b) The Department upon request from any local authority shall, or
upon its own initiative may, conduct an investigation of any bridge or
other elevated structure constituting a part of a highway, and if it
shall thereupon find that such structure cannot with safety to itself
withstand vehicles traveling at the speed otherwise permissible under
this Chapter, the Department shall determine and declare the maximum
speed of vehicles which such structure can safely withstand, and shall
cause or permit suitable signs stating such maximum speed to be erected
and maintained before each end of such structure.
(c) Upon the trial of any person charged with a violation of this
Section proof of the determination of the maximum speed by the
Department and the existence of such signs is conclusive evidence of the
maximum speed which can be maintained with safety to such bridge or
(Source: P.A. 76-1586.)