Memorandum

City of Lawrence

Public Works Department

TO:	David L. Corliss
FROM:	David P. Cronin
CC:	Charles Soules, Mark Thiel, Shoeb Uddin
Date:	September 22, 2010
RE:	KLINK – E. 23^rd St. from west of Haskell to east city limits Project PW1001

Please include the following item on the City Commission consent agenda for consideration at the September 28, 2010 meeting:

Approval of Change Orders for KLINK Project

Project Details:  The project included a 2” mill and overlay of 23^rd Street from west of Haskell Avenue to the east city limits.  Also included was full depth patching, pavement marking, installation of a video detection system at the intersection of Haskell Road and   improvements to the south leg of 23^rd & Haskell Road.

After the street was milled and the roadway base was inspected, it was determined that more full depth patching was required than anticipated.  Additionally, a thicker asphalt leveling course was applied to provide a temporary drivable surface during patching and provide extra support to the finished roadway.  The cost overruns were $67,000 on full depth patching and $30,000 for the thicker leveling course.  Staff identified and reported these costs in the City Manager’s Report on July 16, 2010.  The KLINK project was included in the approved 2010 Street Maintenance Program.

Following the work on 23^rd St, a plan was developed to repair concrete on the south leg of 23^rd & Haskell.  This work included full depth concrete patching, curb and gutter replacement, and geometric improvements to the southeast corner.  The geometric improvements include an increase curb radius for turning trucks, reconstruction of sidewalk ramps, and relocation of two traffic signal boxes that were damaged by trucks driving over the curb.

Project Funding:

Construction Costs

Original Contract                                                      $570,420.05

Quantity overruns with patching and asphalt                            $97,019.20

23^rd & Haskell improvements                                                 $85,000.00                            TOTAL PROJECT COST                                                   $752,439.25

The maximum State participation in the cost of construction is $200,000.  The balance is being paid for with $450,000 in General Obligation Bonds (Resolution No. 6824 approved 3/10/09), $50,000 from the Capital Improvement Reserve Fund and $52,439.25 from the General Fund.

Action Request.  Public Works staff requests approval of Change Orders in the amount of $182,019.20.

Respectfully Submitted,

David P. Cronin, P.E.

Project Engineer