Memorandum

City of Lawrence

Public Works Department

 

TO:

David L. Corliss, City Manager

FROM:

David P. Cronin, P.E., Project Engineer

CC:

Charles Soules, Mark Thiel, Shoeb Uddin

Date:

October 25, 2011

RE:

Project PW1102 - 6th Street, Folks Road to Monterey Way

Geometric Improvements, Milling, Overlay and Pavement Marking

 

 

Please include the following item on the City Commission consent agenda for consideration at the November 1, 2011 meeting:

Approval of Change Orders for Project

 

Project Details

 

The project scope was widening 6th Street 6’ feet to the north and south to provide a center turn lane between Folks Road and Monterey Way.  Included in the project was a mill and overlay of the entire roadway, replacing sidewalk with a 10’ wide shared-use path on the south side and reconstruction of driveway approaches.  The raised median in front of Hy-Vee was removed and the right-in/right-out access to the Hy-Vee gas station was converted to a full movement commercial driveway. 

 

Quantity overruns occurred in flowable fill, asphalt overlay and the concrete base.  Additional flowable fill was used above new storm sewer installed under sidewalk and the 2" asphalt overlay quantity ran slightly over plan quantity.  Due to constructability concerns of widening using an asphalt base, an increase in the quantity of concrete base was used to widen 6th Street to the north.  Change orders include: asphalt oil increases, extra traffic control, additional dirt beyond original construction limits and adjusting a junction box top discovered when grading for shared-use path.

 

Project Funding

 

Final Construction Costs:

Original Contract

$630,112.90

Quantity Overruns - Flowable Fill, Asphalt Overlay & Concrete Base

$49,241.32

Change Orders 1, 5 & 6 - Asphalt Oil Index (June, July & August)

$12,507.36

Change Order 2 & 3 - Extra Traffic Control

$3,625.00

Change Order 4 - Additional Dirt @ 4111 W 6th St.

$830.00

Change Order 7 - Adjust Junction Box Top

$1,951.33

TOTAL PROJECT COST

$698,267.91

 

The project is funded with General Obligation Bonds from Resolution No. 6892.

 

 

 

Action Request

 

Public Works staff requests approval of Quantity Overruns and Change Orders in the amount of $68,155.01.

 

Respectfully Submitted,

David P. Cronin, P.E.

Project Engineer