City Council Minutes 2012 05 15 - Laserfiche WebLink

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City Council Meeting Minutes May 15, 2012 Page 9 of 11 DISCUSSION/DIRECTION/ACTION — US36 AND MCCASLIN BLVD INTERCHANGE Mayor Muckle requested a staff presentation. Planning Director Russ explained this item is a specific budget request for the US 36 and McCaslin Boulevard Interchange project. The City of Louisville has partnered financially with the Town of Superior and coordinated with the Colorado Department of Transportation (CDOT) and the Regional Transportation District (RTD) to complete a Transportation Planning and Conceptual Design Exercise for the US 36 and McCaslin Boulevard Interchange. The Divergent Diamond Interchange (DDI) is one of three alternatives, which were analyzed to improve the traffic flow on McCaslin to the US 36 Interchange and from Marshall Road and the US 36 Interchange. The Divergent Diamond Interchange is being used in 10 locations in the United States. The concept of the Divergent Diamond eliminates signalized left turns, which improves the efficiency of the road by 40%. A challenge to the DDI is the cost associated with accommodating RTD's regional bus service along US 36. The traffic benefits of the DDI require RTD service to be shifted to the US 36 mainline. The total cost for the DDI is $12.4 million dollars. The change in RTD facilities is approximately $5 million dollars of the $12.4 million dollars CDOT is proceeding with design build of Phase One of the US 36 Managed Lane and Regional Trail from Pecos to 88th Street. Concurrently, CDOT is advancing a public private partnership to construct US 36 Phase Two from 88tn Street to Table Mesa in Boulder. The intent of this analysis is to advance the planning and design of a recommended altemative for the McCaslin Boulevard Interchange to be included in CDOT's US 36 Phase Two Project design and construction; or, provide enough information for CDOT's US 36 Phase Two Project so the preferred alternative works with the Phase 2 Project at a future date. CDOT is requiring at least 20% of the DDI design be completed to be included in the RFP. This is due by the end of July 2012. Additionally, work includes environmental and access (CDOT 1601) clearance requirements to allow the project to be constructed. These later assignments can continue beyond the end of July 2012 deadline but must be completed prior to beginning construction. The two municipalities hired the engineering firm Felsburg Holt and Ullevig to lead the study. Staff recommended the City Council authorize an additional $190,105 in the 2012 Capital Improvement Budget (CIP) to further design and analyze the DDI for possible inclusion in the US 36 Phase II project and to approve a contract with Felsburg Holt and Ullevig. The City will manage the $400,000 project and the Town of Superior will reimburse the City one-half of the cost. The Superior Board of Trustees approved their portion of the project at the May 14th meeting. COUNCIL COMMENT