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11 1 1 1 <br /> ~ ~ 11 1 ~ 1 ~ 1 <br /> A endix D <br /> pp <br /> Culverts Slides and Rockfalls Fundin fist <br /> 9 <br /> <br /> The Vision Committee recommends an additional annual investment of $10 million <br /> to address landslide and rockfall issues and culvert issues on state highways. <br /> ODOT would invest half of the money in its landslide and rockfall program and half <br /> in its culvert program. The department would reduce or eliminate spending to <br /> accommodate a lower level of investment in this area. <br /> Landslides and Rockfalls <br /> ODOT's landslide and rockfall program has these goals: <br /> • Safety -reducing the risk to the traveling public presented by landslide and <br /> rockfall hazards. <br /> • Efficiency -reducing road or lane closures and costs associated with traffic <br /> delays. <br /> • Preservation -reducing the significant impacts to the highway system and <br /> ongoing maintenance costs associated with repairing and maintaining known <br /> landslide and rockfall areas. <br /> ODOT has identified more than 500 high priority landslide and rockfall sites around <br /> the state that present a significant hazard to the traveling public. In addition, <br /> there are more than 3,000 additional sites that present a lower risk. <br /> A $5 million annual investment represents a 78 percent increase in the funding to <br /> address landslides and rockfalls. The department could address one additional site <br /> that requires immediate attention, for a total of two sites per year and increase <br /> the number of priority sites receiving corrective action from five sites per year to <br /> nine sites per year. <br /> If this level of additional funding is sustained, the length of time needed to <br /> address the sites that have been identified as needing immediate attention could <br /> be reduced from 29 years to 16 years; the length of time needed to address all <br /> known priority sites statewide could be reduced from 93 years to 52 years. <br /> Culverts <br /> ODOT classifies culverts as "large" when they are more than six feet in diameter. <br /> Large culverts can range in size up to 20 feet in width, the threshold for a bridge. <br /> <br /> There are more than 3,200 large culverts under state highways. In addition, the <br /> state highway system has an estimated 45,000 to 50,000 culverts of smaller sizes. <br /> A $5 million annual investment represents a 192 percent increase in funding for <br /> ODOT's large culvert program. ODOT would increase the number of large culverts <br /> sites rehabilitated or replaced from 4.5 per year to 12.8 per year or could be used <br /> to address culverts of all sizes (similar to the Culvert Repairs Program} and would <br /> correct up to 59 culverts per year. <br /> 40 <br /> <br />