ninyo & moore
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La Pata Avenue Gap Closure

The project was awarded Project of the Year by the Orange County branch of the American Society of Civil Engineers, earned the No. 2 award in Roads & Bridges magazine’s Top 10 Roads list, and was awarded the Design Quality Partner Award by the Southern California Chapter of the Construction Management Association.

Project Highlights:

  • Geotechnical Engineering
  • Mass Grading
  • Removal of Landslides
  • Instrumentation and Remote Sensing
  • 1.8 Miles of Roadway Widening
  • 2 Miles of New Roadway
  • 2 New Bridges

Ninyo & Moore provided geotechnical consulting services during construction of the La Pata Avenue Gap Closure and Camino Del Rio Extension Project, which involved widening 1.8 miles of La Pata Avenue in San Juan Capistrano, constructing 2 miles of new roadway to connect La Pata Avenue to Avenida La Pata in San Clemente, connecting Avenida La Pata to Camino Del Rio via 0.4 mile of new roadway, and constructing two bridges and two long-span structural plate steel undercrossings. Our services included observation and compaction testing during 12 million cubic yards of mass grading that involved removal of landslides and construction of buttresses. We performed geologic mapping of remedial grading bottoms and temporary backcuts for buttresses, observed canyon subdrain and buttress backdrain construction, performed in-grading exploratory borings to evaluate removal of landslide deposits, and prepared geologic cross sections for slope stability analyses to evaluate adequacy of buttresses and preparation of revised buttress configurations. We also performed settlement analyses of deep fill, and prepared geotechnical field memoranda and as-graded reports. We also implemented a slope monitoring plan to observe the stability of temporary remedial grading cuts adjacent to SDG&E and SCE transmission lines. The plan included the design and installation of thirteen continuously monitored in-place inclinometer and tilt meter systems that were solar powered and transmitted data via cellular modem to a web-based monitoring service. The plan established automatic alert levels based on ground or tower/pole movement and recommendations for actions. Our services included review and maintenance of the monitoring system and implementation of actions following automatic alarms.

Project Details

Client:

County of Orange Public Works c/o Hill International

Location:

Orange County, California

Client Testimonials

Paul Brown
"For over 25 years, Ninyo & Moore has performed in an outstanding manner on SDUPD as-needed environmental consulting services… Among Ninyo & Moore’s major attributes are a strong understanding of public sector client needs, innovative technical solutions, detailed understanding of regulations, and a proactive, professional relationship with regulators and consultants in the region."
Paul Brown
Program Manager
Environmental San Diego Unified Port District
Michael Grossman, P.E.
"I wanted to personally congratulate you and your team on wrapping up an extremely complex geotechnical project... The Bureau of Engineering, site soils conditions, and complex/revised structural system did not make for an easy scope of services… When faced with adversity your team was up to the task. It worked through a tough re-design/compressed time line, difficult series of approvals, and persevered…"
Michael Grossman, P.E.
Managing Director
AvAirPros: Milestone for Terminal 1.5 at Los Angeles International Airport (LAX)
Glenn Young
"Thank you for the incredible value, service, quality and impact… We are so appreciative of your commitment, expertise and experience in preparing plans and reports, obtaining superb field contracting services and providing professional field work. You are the best of the best."
Glenn Young
California Department of Resource and Recycling
Mark D. Claussen, PE
"Services provided include hazardous material investigation and documentation; geotechnical evaluation, testing and observation; and, special inspections and testing services. …I highly recommend Ninyo & Moore for all these services to any government agency tasked with the public safety, and providing timely and professional data to support both project schedule and budget development."
Mark D. Claussen, PE
Bond Program Manager
Southwestern Community College
Mark Stapledon
"Ninyo & Moore’s team is responsive, collaborative, and technically knowledgeable… I highly recommend Ninyo & Moore for these services to any other school district due to their excellent service, technical abilities, timely response to any request, and ability to support our schedules and budgets."
Mark Stapledon
Construction Management Supervisor
San Diego Unified School District
Mark Law
"Ninyo & Moore’s staff responded to the City’s needs and worked closely with our Capital Improvement Division to ensure cost effective recommendations and services. Ninyo & Moore’s team services are professional, client oriented, and provide quality reports."
Mark Law
Project Manager
City of Missouri City
Kay Khadem, CCM, PMP, LEED ®AP
"I wanted to take the time to thank you for the service your company provided to ours. We sincerely appreciate your customer service, how you’re always available to handle challenging issues, the excellent work you have demonstrated on every project, and the professional way you conduct business."
Kay Khadem, CCM, PMP, LEED ®AP
Senior Project Manager
Santa Monica-Malibu Unified School District
Kevin Huber
"Ninyo & Moore’s consultants have been efficient and extremely responsive and have demonstrated excellent communication skills and quality of work. I am pleased with the value of Ninyo & Moore’s services and am happy to refer them to my associates and other entities in need of their services. We would highly recommend using Ninyo & Moore for any of their services…"
Kevin Huber
Executive Director
Cooperative Strategies

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