Memorandum
City of Lawrence
Public Works
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TO: |
David P. Cronin, P.E., City Engineer |
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FROM: |
Steven M. Lashley, P.E., Project Engineer – Infrastructure Management |
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CC: |
Mark Thiel, Assistant Director of Public Works – Infrastructure Management Charles F. Soules, P.E., Director of Public Works |
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Date: |
December 26, 2012 |
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RE: |
Pavement Management Program Update – Cycle 3 Status & 2013 Program January 15, 2013 Regular Agenda Item – Approve 2013 Comprehensive Street Maintenance Program
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Please include the following item on the City Commission regular agenda for consideration at the January 15, 2013 meeting:
Program Update . The third quarter (Phase 3) of street rating Cycle 3 was completed in November 2012 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 6,041 in 2012 versus the 12,575 potholes patched in 2011 and the 30,472 potholes patched in 2010. The expansiveness of maintenance activities are reflected in the attached 2006-2012 combined maintenance map.
Program Summary . Results of the current street rating data indicate the following (also see attached PCI map):
- Average PCI progressively increased by 7.37% from Cycle 2 through Cycle 3 to date (Cycle 2 = 70.28, combined with Cycle 3 Ph.1,2,&3 = 75.46)
- Deterioration rates are slowing: Overall average yearly deterioration rate for Cycle 3 (Ph.1,2,&3) comparable segments equals a positive incline of 3.37
- 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,&3) w/ Cycle 2 – 19.5% fair to poor
2013 Street Maintenance Program & Funding . In August 2012, the City commission approved approximately $4.38 million to be utilized for the 2013 Street Maintenance Program. The pie chart below gives a breakdown of the various funding sources. The “Proposed 2013 Comprehensive Street Maintenance Program” map is attached to this document. The map includes streets identified for maintenance work such as crack sealing, microsurfacing/ patching, mill and overlay/curb and gutter, concrete rehabilitation, and internal street maintenance project areas that include concrete rehabilitation work. Other significant project locations such as the KLINK mill and overlay, multiple CIP reconstructions, several intersection geometric/signal improvements, and the brick restoration/ concrete reconstruction projects are also shown.
The proposed 2013 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 2013 Comprehensive Street Maintenance Program.
Attachments: Updated PCI Map