Title
An Ordinance authorizing the execution of Modification No. 2 to agreement dated July 14, 2017 (RFQ NO. 44112-D) for professional engineering services for Langsford Road Bridge Rehabilitation by and between the City of Lee's Summit, Missouri, and Bartlett & West, Inc., for a net increase of $22,215.00 with a revised contract amount not to exceed $386,530.50 and containing an emergency clause.
Body
Issue/Request:
Approval of an ordinance authorizing the execution of Modification No. 2 to agreement dated July 14, 2017 (RFQ NO. 44112-D) for professional Engineering Services for Langsford Road Bridge Rehabilitation by and between the City of Lee's Summit, Missouri, and Bartlett & West, Inc., for a net increase of $22,215.00 with a revised contract amount not to exceed $386,530.50 and containing an emergency clause.
Key Issues:
The rehabilitation work of the Langsford Road Corrugated Metal Pipe (CMP) is underway. City Council awarded the construction contract to LEXECO in September 2018, and work began on October 16th. The Langsford Road CMP is composed of two pipes, setting side by side, running under Langsford Rd at the intersection of SE Ridgeview Dr for a distance of approximately 500 feet.
Shortly after work began, the Contractor notified City staff of a compromised segment of the eastern pipe, approximately 75 feet from the outlet. The top portion has pushed down approximately 6 inches, and the pipe joint has separated. Dirt can enter the pipe through the opening, and this could lead to a collapse. A collapse would lead to additional infrastructure damage and could cause upstream flooding by debris blocking the flow of storm water.
The damage sustained by the pipe cannot be repaired. The pipe will be removed from the damaged location to the outlet, a distance of approximately 75 feet. The excavation and removing of the eastern pipe will undermine the stability of the western pipe, so while it showed no damage it will also be replaced.
City s...
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