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- - 7 _o6 INTERSECTION IMPROVEMENTS AT .2d� 07V CR-510 AND US HIGHWAY I AMENDMENT NO . 1 TO THE PROFESSIONAL CIVIL ENGINEERING GEOTECHNICAL ENGINEERING & LAND SURVEYING SERVICES AGREEMENT BETWEEN McMAHON ASSOCIATES, INC . & INDIAN RIVER COUNTY, FLORIDA This is an amendment to the existing Professional Civil Engineering, Geotechnical Engineering and Land Surveying Services Agreement (AGREEMENT) dated May 17 , 2005 , between McMahon Associates, Inc. (ENGINEER) and Indian River County (COUNTY) . This amendment addresses changes in "Section I — Project Limits and Description", "Section II — County Obligations", "Section III — Scope of Services", "Section IV — Time for Completion" and "Section V — Compensation' of this AGREEMENT. "SECTION I - PROJECT LIMITS AND DESCRIPTION" is being modified to incorporate the following: Consultant services are required for the preparation of' supplemental design survey, right-of-way maps, parcel sketches, and legal descriptions, subsurface geotechnical investigations, roadway design plans, signing and marking plans, signalization plans, and permit applications associated with the design of improvements extending both west and east of the intersection of SR-5/US- 1 and CR-510 (Wabasso Road), from the present contract limits in Indian River County, Florida. The roadway improvements identified by the COUNTY consist of the following: Countv Road 510 Widening CR-510 will be widened to a four-lane cross-section from the current intersection limits, west to 61 " Drive (Lows Avenue), and from the current intersection limits, east to the lower bridge crossing the Indian River Lagoon. Along the Wabasso Scrub Conservation Area, widening is anticipated to be accomplished on the south side with an anticipated right-of-way width of 130 feet. In conjunction with the improvements to CR-510 , the following improvements are proposed to the bisecting side streets: • 59ih Avenue — Proposed paved apron on south approach with no median opening. • 58'x' Cour( — Proposed paved apron on south approach with no median opening. • 58°i Avenue/Kings FIighway — Design the south leg to accommodate an exclusive left-tum lane, a shared lett-through lane, and an exclusive right-tum lane. The left-tum lane on CR-510 to southbound 58" Avenue may be widened to a dual left-tum lane. For purposes of this proposal , this has been considered. Proposed paved apron on the north approach. Intersection improvements shall include mast arm signalization components. Approximately 2 ,640 linear feet of improvement. • 55i ' Avenue - Proposed paved apron on north approach with a median opening and left turn/u-tuns lanes on CR-510.