05/29/19 City Council Agenda Packet - Work Session

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EXECUTIVE SUMMARY () continued New construction techniques such as in-place recycling (also known as in-place cement treated base, ICTB) which strengthens existing roadbed materials for reuse and lowers impacts to the environment have been successfully used in place of conventional reconstruction techniques and resulted in additional cost savings. In 2018,Public Works hireda third party consultant to review pavement data,confirming accuracy. The backlog estimate does not take into account the repair needs for concrete streets, unimproved streets, sidewalks, off-street shared-used paths, or other elements of the transportation system. The report utilizes three funding scenarios to project treatment needs and costs over a 10-year period. The analyses uses bi-annually updated costs provided by Public Works Engineering,whichare adjusted to include a 2 percent inflation factor. Following is a summary of the analyses: Based on the projected funding (Table 3,pg. 14), a $192 million backlog is projected in 10 years. Last year the projected backlog was $182million. In 2023bond funding will end, decreasing pavement preservation from an average of $11.9million to $3.2 million. Based on current and projected funding of $3.2 million, an additional $6.4 million is needed annually to prevent arterial and collector streets from falling into the reconstruct range and to eliminate the reconstruct backlog for arterial and collector streets in 10 years. In addition to the above mentioned need,$4.6million annually is also needed to prevent residential streets from falling into the reconstruct category, and to eliminate the residential reconstruct backlog in10 years. 2 May 29, 2019, Work Session - Item B