Colorado Revised Statutes Title 42. Vehicles and Traffic § 42-4-1104. Speed limits on elevated structures

(1) 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 signposted as provided in this section.

(2) The department of transportation 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 finds that such structure cannot with safety to itself withstand vehicles traveling at the speed otherwise permissible under sections 42-4-1101 to 42-4-1104, said department shall determine and declare the maximum speed of vehicles which such structure can withstand and shall cause or permit suitable standard signs stating such maximum speed to be erected and maintained before each end of such structure in conformity with the state traffic control manual.

(3) Upon the trial of any person charged with a violation of this section, proof of said determination of the maximum speed by said department and the existence of said signs shall constitute conclusive evidence of the maximum speed which can be maintained with safety to such bridge or structure.

(4) Any person who violates any provision of this section commits a class A traffic infraction.