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|CITY COUNCIL AGENDA ITEM NO. _______
Meeting Date: September 10, 2002
Subject/Title: Temporarily Close the Sand Creek Road/O’Hara Avenue Loop from Brentwood Blvd. to Central Avenue, for Sand Creek Road (East), CIP Project No. 336-3061.
Submitted by: Engineering: B. Grewal/D. Spekner
Approved by: John Stevenson, City Manager
Approve a Resolution authorizing staff to temporarily close the Sand Creek Road/O’Hara Avenue Loop from Brentwood Boulevard to Central Avenue for Sand Creek Road (East), CIP Project No. 336-3061.
Based upon the three alternatives described in below, Staff recommends that the City Council authorize the temporary closure of the Sand Creek Road/O’Hara Avenue Loop from just west of Brentwood Boulevard to just north of Central Avenue for a period not to exceed four weeks for the construction of utilities including treated waterline, non-potable waterline, storm drain, and sewer. Work is expected to begin on or about September 11, 2002.
On July 23, 2002, the City Council authorized the City Manager to sign a Construction Contract with Top Grade Construction, Inc. for the construction of Sand Creek Road (East), CIP Project No. 336-3061, from east of Minnesota Avenue to just west of Brentwood Boulevard, crossing the Union Pacific Railroad.
In order to install the underground utilities for the Sand Creek Road (East) project, traffic routing on the Sand Creek Road/O’Hara Avenue loop must be changed. The City met with the Contractor on September 5, 2002, to discuss the various alternatives available to complete the installation of the utilities for this CIP project. The work scheduled for construction includes treated water mains, a non-potable water main, storm drains, and sewer lines. This work will provide treated water service to the new developments to the west of the existing Sand Creek Shopping Center, provide drainage for the new roadways, and will eventually provide treated water and sewer services to future development in the area.
Three alternatives were considered for completing this work before the winter rains begin. One alternative would be to keep the roadway open and use flagmen and traffic control signs to move the traffic through the construction site. If the council elected to use this alternative, parts of the Sand Creek Road/O’Hara Avenue Loop would need to be widened to provide safe two-way traffic in the loop. This alternative is the most costly and would require the longest duration of inconvenience to the public and the completion of the work. Even though the roadway would remain mostly open, some of the work would still require a full closure of the road when the Contractor completed his tie-ins to the existing City water system.
The second alternative would be to close half the road at a time and allow only one direction of traffic to move through the site while the Contractor performs work on the other side. Although this alternative is less expensive than the first, the work will take approximately the same amount of time to complete and would inconvenience and confuse the public as to which side of the road is open and when.
The safest and most cost effective alternative would be to temporarily close the road from just west of the shopping center to just north of Central Avenue in areas of the road that allow motorists room to turn around. All traffic will then be detoured onto Brentwood Boulevard or Central Avenue, both of which will remain open and free from future construction activities for the next two months. City staff will work with the Contractor to ensure that the portions of Sand Creek Road and O’Hara Avenue with business frontages remain open and accessible at all times to minimize the impact this road closure will have on local businesses. The City will review the Contractor’s traffic detour plans prior to commencement of construction and will notify the Police, Fire Department, and the public of this road closure. The Contractor will work with the City to notify residents and businesses of the proposed road closure and detour routes and will update the City’s Traffic Alert section on the web site.
City staff has reviewed all three alternatives and recommends that the Council authorize the four-week closure of the Sand Creek Road/O’Hara Avenue Loop. Staff will provide supplemental information at the City Council meeting describing the costs of each alternative as well as the proposed detour route and site map.
The funds for this work are through facility fees, which are included in the existing budget as approved in this year’s Capital Improvement Program 2002/03.
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