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were In accordance with FEMA
<br />and USACE requirements, using
<br />the USAGE computer program
<br />"CTWALL", to analyze the different
<br />wall sections for stability in
<br />accordance with USACE EM 1110-
<br />2-2502, Engineering and Design
<br />- Retaining and Flood Walls.
<br />Templeton to Atascadero
<br />Connector, County of San
<br />Luis Obispo, Templeton,
<br />CA, Structural Design
<br />Engineer. Responsible for the
<br />preliminary design concept for
<br />the pedestrian bridge support
<br />system and approach slabs,
<br />as well as selecting the bridge
<br />superstructure type. Tetra Tech
<br />was contracted to provide design
<br />services for a mufti -use pathway
<br />including completing the California
<br />Environmental Quality Act (CEQA)
<br />and National Environmental
<br />Policy Act (NEPA) processes,
<br />right-of-way acquisition, permits,
<br />construction documents and
<br />grant administration. The ultimate
<br />goal of the pathway network is
<br />to provide connectivity between
<br />Templeton and Atascadero,
<br />facilitating safe and attractive
<br />transportation between these two
<br />towns and encouraging alternative
<br />transportation modes.
<br />Sand Canyon Trail Phase IV,
<br />Alta Planning + Design for the
<br />City of Santa Clarita, Santa
<br />Clarlta, CA. Lead Structural
<br />Design Engineer. Responsible
<br />for providing bridge design
<br />services Including crossing plans,
<br />foundation recommendations,
<br />cost estimates, and bridge type
<br />selection reports. The Sand
<br />Canyon Trail Corridor provides
<br />access for cyclists, hikers,
<br />and equestrians and connects
<br />the Santa Clarita Valley to the
<br />northeast San Fernando Valley.
<br />In order to preserve the natural
<br />environment, the 0.8 mile
<br />extension of the multi -use trail will
<br />require three bridges.
<br />Arroyo Park Pedestrian
<br />Bridge Replacement, City of
<br />Santa Clarita, Santa Clarita,
<br />CA. Engineer of Record and
<br />Project Manager for the plans,
<br />specification and estimate. The
<br />City of Santa Clarita (City), In
<br />conjunction with the Landscape
<br />Maintenance District (LMD),
<br />maintains 25 pedestrian bridges
<br />and 5 under crossings that fink
<br />the paseo system In the Valencia
<br />North and South neighborhoods in
<br />the City of Santa Clarita. The City
<br />proposes to replace the last timber
<br />bridge located on Arroyo Park
<br />Drive, 0.6 miles west of McBean
<br />Parkway, with a pre -fabricated
<br />steel truss structure. Tetra Tech
<br />was hired to finalize the design and
<br />complete detailed construction
<br />Pians, Specifications, and
<br />Estimate (PS&E) of the proposed
<br />bridge replacement and additional
<br />support services as needed by the
<br />City. The biggest challenge that
<br />faces the Arroyo Park Pedestrian
<br />Bridge Replacement project is
<br />Arroyo Park Drive itself. Arroyo
<br />Park Drive is a residential roadway
<br />and has traffic throughout the day.
<br />Coordination during the demolition
<br />of the existing bridge and during
<br />final assembly and erection of the
<br />new pre -fabricated bridge will be
<br />key to the project success. These
<br />major construction activities will
<br />most likely require full closure of
<br />Arroyo Park Drive, Tetra Tech is
<br />experienced in the preparation
<br />of traffic control plans within the
<br />City and will work once again to
<br />minimize the Impact to the public.
<br />Vista Canyon Bridge over
<br />the Santa Clara River, Design
<br />for Vista Canyon Ranch
<br />LLC, Santa Clarita, CA. Lead
<br />Structural Design Engineer.
<br />Responsible for the design and
<br />construction of a new bridge over
<br />the Santa Clara River for access
<br />from the Highway 14 to the new
<br />25F-61
<br />Vista Canyon Ranch development.
<br />The Vista Canyon Road Bridge
<br />will span approximately 7801-
<br />0" feet with an overall width
<br />of approximately 64-5". The
<br />proposed bridge consists of
<br />two 14'-0" lanes and a 12'-0"
<br />median/emergency lane on the
<br />west side, and a 5'-0" raised
<br />planter. The structure will consist
<br />of a 9 -span, precast, prestressed
<br />concrete ]-girder supported on
<br />reinforced concrete walls, seat -
<br />type abutments and foundations
<br />are anticipated to consist of driven
<br />steel piles.
<br />Haena State Park Bridge
<br />Design, Hanakapi'ai Beach
<br />Bridge improvement Project,
<br />State of Hawaii Department of
<br />Lands and Natural Resources,
<br />Kapaa, Kauai, HI. Structural
<br />Project Engineer. Responsible for
<br />preparation of Concept Design
<br />and Bridge Type Selection Report
<br />to determine the most suitable
<br />bridge type and bridge location for
<br />the Kalalau Trail crossing of the
<br />Hanakapi'ai Stream at Hanakapi'al
<br />Beach, Hawaii. Hanakapl'ai Beach
<br />Is a well visited stop along the
<br />Kalalau Trail, located two miles
<br />from Ha`ena State Park. Mr. Olsen
<br />was responsible for overseeing
<br />the structural engineering design,
<br />coordination of geotechnical
<br />studies and overall bridge
<br />design. Plans, Specifications and
<br />Estimates are currently being
<br />completed with DLNR. Hanakapl'ai
<br />Beach is remote and difficult to
<br />reach, and can only be accessed
<br />from the foot trail, by boat, or by
<br />helicopter. The goal of the project
<br />is to provide a safe crossing over
<br />the stream during the periodic
<br />flood events that frequently occur
<br />and to reduce the need for State
<br />resources, which includes airlifting
<br />visitors across the stream via
<br />helicopter.
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