Memorandum
City of Lawrence
Public Works
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TO: |
Mark Thiel, Assistant Director of Public Works – Infrastructure Management |
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FROM: |
Steven M. Lashley, P.E., Project Engineer – Infrastructure Management |
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CC: |
Charles F. Soules, P.E., Director of Public Works |
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Date: |
December 7, 2011 |
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RE: |
Pavement Management Program Update – Cycle 3 Status & 2012 Program December 13, 2011 Regular Agenda Item – Approve 2012 Comprehensive Street Maintenance Program
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Please include the following item on the City Commission regular agenda for consideration at the December 13, 2011 meeting:
Program Update . The second quarter (Phase 2) of street rating Cycle 3 was completed in October 2011 followed by recent comparative analysis of the new survey data with existing data in the City’s pavement management program. This management program provides Public Works with a tool to maintain an inventory of street pavement, their respective condition and maintenance work history, and the ability to identify budget needs and impacts associated with preservation strategies and asset management. By applying this tool and with the continued support of the City’s citizens and representatives, the City has seen the implementation of a wide range of maintenance techniques from preventative maintenance measures to major rehabilitation and reconstruction impacting overall Pavement condition Index (PCI) and pavement deterioration. Contributing impacts of the program can be seen in reduction in the number of potholes patched by street maintenance division that amounted to 10,901 as of early November of 2011 versus the 30,472 potholes patched in 2010. The expansiveness of maintenance activities are reflected in the attached 2006-2011 combined maintenance map.
Program Summary . Results of the current street rating data indicate the following:
- Average PCI progressively increased by 5.75% from Cycle 2 through Cycle 3 to date (Cycle 2 = 70.28, combined with Cycle 3 Ph.1&2 = 74.32)
- Deterioration rates are slowing: Overall average yearly deterioration rate for Cycle 3 (Ph.1&2) comparable segments equals a positive incline of 4.55
- The percentage of streets in the “fair to poor” (“unacceptable”) range has decreased:
- Cycle 1 – 31.5% fair to poor
- Cycle 2 – 29.8% fair to poor
- Combined Cycle 3 (Ph.1&2) w/ Cycle 2 – 22.75% fair to poor
2011 Street Maintenance Program & Funding . In August 2011, the City Commission approved approximately $4.95 million to be utilized for the 2012 Street Maintenance Program. Based on program needs, an additional $1 million from infrastructure sales tax was added to the program. The pie chart below gives a breakdown of the various funding sources. The “Proposed 2012 Comprehensive Street Maintenance Program” map is attached to this document. The map includes streets identified for crack sealing, microsurfacing/ patching, mill and overlay/curb and gutter, concrete rehabilitation, internal street maintenance project areas that include concrete rehabilitation work, and other project locations such as the KLINK and CIP projects.
The proposed 2012 program map has been sent out for review to other departments, local utilities, consultants, and other local authorities for determination of potential impacts, conflicts, and coordinated work efforts including scheduling.
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Action Request . Approve 2012 Comprehensive Street Maintenance Program.
Attachments:
2006-2011 Comprehensive Street Maintenance Map