Kimley-Horn, on behalf of City of Lancaster, is providing program management and design services for five interchanges...
Vital Collaboration
Partnered with Caltrans, the City of San Diego, and the San Diego Association of Governments to meet the changing needs of the corridor
Innovative Water Services
Provided pipeline design services to replace an existing potable 24-inch pipe and relocate an existing 24-inch recycled water pipeline
Expedited Schedule
Leaned into our partnership with Caltrans to prepare the plans, specifications, and estimates in a compressed, six-month schedule
Kimley-Horn prepared the project approval and environmental documentation and the plans, specifications, and estimates (PS&E) for the reconstruction of the I-5/Genesee Avenue interchange in San Diego.
Project Recognition
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Delivering Diverse Services in an Accelerated Timeline
Kimley-Horn’s services included preliminary engineering and obtaining CEQA/NEPA environmental clearances. We prepared the PS&E on a compressed schedule, moving the design from 30% completion to final design within six months. This timeline required nimble adaptation, and our team coordinated closely with Caltrans to ensure success.
We designed a 10-lane overcrossing replacement for the existing five-lane Genesee Avenue bridge, widening and realigning the on- and off-ramps at Genesee Avenue and Roselle Street. Our team also designed a barrier-separated bike facility along I-5 from Voigt Drive to Roselle Street and developed a combined bicycle and pedestrian overcrossing over Genesee Avenue. Due to heavy traffic, adverse terrain, environmentally sensitive areas, and other physical constraints, the project required the following services and features:
- Earthwork
- Corridor study
- Traffic analysis
- Geometric improvements
- Retaining walls
- Stormwater management
- Stormwater pollution prevention plan
- Traffic management
- Landscape architecture
- Right-of-way engineering
- Utility relocation
Due to the bridge length required by the future I-5 North Coast Corridor project, our team designed the south half of the bridge to be constructed higher and then lowered into place to meet the falsework clearance requirements and minimize the change in profile for Genesee Avenue. We also designed the pedestrian overcrossing over Genesee Avenue with conservative slopes to meet ADA requirements, allowing anyone to use the crossing.
Environmental
Kimley-Horn prepared a Noise Study Report pursuant to the California Traffic Noise Analysis Protocol and the Technical Noise Supplement. Using the Federal Highway Administration Traffic Noise Model version 2.5, we evaluated traffic noise at the adjacent University of California, San Diego (UCSD) dormitories and athletic fields and at outdoor use areas associated with the Scripps Memorial Hospital La Jolla and other office buildings.
Intelligent Transportation Systems (ITS)
The project’s design elements required extensive coordination with Caltrans for widening of the interstate to 10 lanes, which included HOV and auxiliary lanes. The team prepared the full design for all of the electrical and communication components, including relocating the fiber-optic communication backbone that runs parallel to I-5 on the east side of the interstate.
Driving Water Infrastructure Improvements
Kimley-Horn provided pipeline design services as part of this improvement project, including two 24-inch diameter steel potable water lines and one 24-inch recycled water line designed to run through the new Genesee bridge. The pipelines were constructed through the new Genesee Bridge over I-5, requiring careful coordination with the City of San Diego Public Utilities Department, Caltrans, UCSD, and Scripps Hospital to make sure that service continued throughout construction.
