Meeting_Body
PLANNING AND PROGRAMMING COMMITTEE
OCTOBER 16, 2019
Subject
SUBJECT: SR-57/SR-60 INTERCHANGE IMPROVEMENTS
Action
ACTION: AUTHORIZE CONTRACT MODIFICATION
Heading
RECOMMENDATION
Title
AUTHORIZE the Chief Executive Officer to execute Contract Modification No. 1 to Contract No. AE51890001 for the State Route 57/State Route 60 Interchange Improvements (Project) with WKE, Inc. to provide professional services in the amount of $3,384,081.72, increasing the total contract value from $21,771,625 to $25,155,706.72.
Issue
ISSUE
Three project components are being updated which will require additional scope for the Plans, Specifications & Estimates (PS&E) phase. The additional scope will provide benefits to the project including reduced right-of-way (ROW) costs, reduced schedule risk and enhanced operation and safety of the freeway. The additional scope elements include 1) geometric adjustments to the Grand Avenue connectors, 2) hydrologic analysis and consolidation of existing storm drains and 3) preparation of contract bid documents for the Diamond Bar Golf Course as required by mitigation measures under National Environmental Policy Act (NEPA) Section 4(f).
Metro staff developed a statement of services and an independent cost estimate for the additional scope work. The contract modification covers the environmental revalidation studies and PS&E work associated with the additional scope of work.
Background
BACKGROUND
SR-57 and SR-60 are two vital highways that merge and share an alignment for a two-mile segment in the vicinity of the Cities of Diamond Bar and Industry. This shared alignment is the second highest truck involved accident location in Southern California and ranked as the fourth-most congested freight chokepoint in the nation by the American Transportation Institute. Improvements to the SR-57/SR-60 Interchange are needed to improve safety and operational deficiencies at the Grand Avenue Interchange, accommodate expected ...
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