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IEL <br />*,T W <br />LA PATA AVENUE GAP CLOSURE & CAMINO DEL RIO EXTENSIONI <br />Orange County, California (COMPLETED 2017) <br />Huitt-Zollars prepared PS&E and right-of-way documents to close an <br />existing gap in Orange Courrys Master Plan of Arterial Highways between <br />Ortega Highway and the City of $an Clemente. This 3.7 mile long, $72 <br />�iK <br />million project was comprised of critical elements that came together <br />for the project's success: working within the Prima Desheche Landfill <br />and designing controlled access to the landfill; widening an existing <br />section of roodwaythat most remain in operation to serve the landfill and <br />adjacent high school; and pioneering a new roadway through undeveloped, <br />mountainous terrain with final madway grades up to 7%. Huitt-Zollars <br />overcome multiple challenges associated with the following critical <br />a ennants: moving 15 million cubic yards of earth� performing landslide <br />remedlation; mitigating effects of constructing the roadway through a <br />former landfill area and relocating more than one billion pounds (850K <br />cubic yards) Of InUfliCiPal Solid waste; relocating two steel lattice electrical transmission towers; actively communicating with impacted <br />V, <br />communities; and responding to numerous environmental mitigation measures that must be implemented during design and construction. <br />Challenges were also associated with constructing deep drainage culverts, storm drainage systems and water quality basins, two cast in <br />place bridge overcrossing and five 30-foot diameter steel multi -plate tunnel undercrossings. Installed approximately 3,000 LF of sewer and <br />domestic water line. <br />The project included Installation of approximately 3,000 LF of sewer and domestic water line and construction/extension of 22 cross culverts <br />Jr <br />beneath the future roadway and a substantial roadway storm drain infrastructure comprised of more than 15,000 linear feet of reinforced <br />concrete pipe; ranging in size from 18 to 108 inches in diameter. The roadway storm drain infrastructure segregates roadway runoff from offs1to <br />itl J� <br />drainage areas In orderto facilitate treatment of roadway Impervious surfaces. To meet Orange Countytriterla and NPDES requirements, a <br />" I <br />'Lill <br />total of six combined basins (to address water quality, hydromodification, and detention) were included in the projectto address pollutants of <br />concern and meet LID requirements. Flood control requirements are met by providing additional peak flow detention storage (over ten acre- <br />feet) in these basins, <br />y, <br />RELEVANT MIGN COMPONENTS: <br />Value Engineering <br />Landfill Engineering <br />Sewer and Dainestle Water <br />P4 vament Rehabilitation Overlay <br />good Widening <br />Geotechnical <br />Gap Closing, <br />Starm,orano <br />I <br />Raiaiolag Walls <br />Nio or Structures <br />864 , as an d 681' <br />ft/61 c St ; gnats , <br />7 <br />PS&E <br />-tiaAccohinill6oustruction Staging <br />ytiroulics <br /># <br />V <br />signalle t Striping <br />Bilogocoinp6ter UPS <br />�Utxtytaonfidailou � Relocation <br />!ONT,A <br />t,qC JENT, <br />­­ ....... ­­­ .... *"*** ..... ............ <br />Project of The Year Award <br />Design Qua lity Pa rtmer Award I or Projects $51 - $100 Million <br />#2 on Roads and Bridges Magazine Top 10 Roads List <br />D.F.S.T. Award for a Regional Transportation Project <br />...................................................... <br />HUITEZOUARS Cityof Santa Ana Civil Engineering Services: RFP 17-083 10 <br />25E-280 <br />