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FINAL 2008-2011 STATEWIDE TRANSPORTATION IlVIPROVEMENT PROGRAM Pavement Preservation The Pavement Preservation Program is managed statewide by the ODOT Highway Division. The division maintains a state- wide Pavement Management System (PMS) that monitors and forecasts pavement condi- tions on state highways. There is a technical committee called the Statewide Pavement Committee (SPC) that works with the Pavement Preservation Program Manager on technical issues. Because pavement preser- vation is one of the state's most important transportation programs, the OTC has adopted project eligibility criteria and priori- tization factors to help choose system in- vestments and treatments that make the best use of available resources. The Pavement Preservation Program is de- signed to keep highways in the best condi- tion at the lowest lifecycle cost. Where funding allows, the program tries to add use- ful life to a road before the pavement reaches poor condition. The primary reason for this is that the cost of treating a pave- ment in poor condition can be four to five times greater than the cost of treating a pavement before it reaches poor condition. The Pavement Preservation Program is the largest dollar-value program in the STIP. Even this level of investment, however, is insufficient to improve all substandard pavement. As a result, ODOT has devel- oped astrategy to make the best use of available resources. The goal is to achieve an average statewide highway condition rat- ing of 78% fair or better (equivalent to the 1999 statewide condition rating). Condition goals are highest for the highways that carry the largest freight and traffic volumes. To achieve this goal, the Oregon Highway Plan set specific condition targets for each high- way classification for 2010 as follows. Table 3 -Oregon Highway Pavement Condition Goals of Highway to Type of Highway be Maintained in Fair or Better Condition Interstate Hi hwa s 90% State Hi hwa s 85% *Re Tonal Highwa s 75% **District Hi hwa s 65% Overall 78% *Pavement work on Regional and District highways with ADT of less than 2,500 vehi- cles is funded through Maintenance pro- grams that are not included in the STIP. **District highways received an additional $70 million in bonding proceeds from the 2001 Oregon Transportation Investment Act, which temporarily raised their condi- tion rating. Preservation funds are distributed among ODOT regions based on the estimated re- sources needed to meet condition goals. The Pavement Management System is used to forecast miles of highway treatments needed in each region to meet the goals for each class of roadway. The PMS monitors current conditions and forecasts future pavement conditions on state highways. The system relies on com- puter programs, field inspection, and con- struction cost data for forecasting pavement conditions and estimating the cost to pre- serve pavement conditions. The PMS helps managers choose the most beneficial in- vestment projects. ODOT regions use the information from the PMS and local knowledge about regional priorities to develop afour-year preservation program. Pavement condition is the main factor used in selecting candidate projects, but the level of usage of the specific section Page 19