Time frame allowed for lane closure setup (e.g., 9:00am to 3:30pm)

Ohio DOT allows the contractor to prepare for a lane closure in advance of the closure time, but the actual closure cannot take place before the time stated in the contract. Required signs and devices can be deployed along the shoulders but the lane must remain open until the time stated.
Therefore, a 9:00am closure means that devices to accomplish the closure cannot be placed in the lane until 9:00am.