Work Zone Mobility and Safety Program

Construction Analysis for Pavement Rehabilitation Strategies: Decision-Support Model – Multi-discipline Team-work

This decision support model provides a decision tree for use in the CA4PRS analysis process. The process begins with "Alternative 'What If' Scenarios." From here, in module one, a decision must bemade to determine if the scenario is constructable under the proposed schedule. This is based on closure numbers, project duration, and cosntruction staging. If the answer is no, then the user must return to re-assess the alternative scenarios. If yes, then he proceeds to Module 2, in which it is determined if traffic is tolerable based on queue and delay, road user cost, and demand control. Again, if the answer is no, the user must return to the alternative scenarios. If yes, he proceeds to Module 3, in which it is determined if the project cost is acceptable based on budget, agency funds, traffic costs, support costs, and life-cycle cost analysis (LCCA). If the answer is no, the user must return to the altertnative scenarios, if yes, he proceeds to developing a TMP and PS&E.

Return to slide 8.

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