I-210 Soundwalls

Ardurra delivered project approval, environmental documentation, and PS&E engineering design services for eight separate sound walls along the I-210 freeway, achieving significant time and cost savings through strategic design optimization. The project required extensive coordination with Caltrans, the City of La Cañada Flintridge, and stakeholders while meeting aggressive funding deadlines and environmental compliance requirements.

Alternative cost analyses yielded substantial savings by realigning and straightening wall configurations, demonstrating value-engineering expertise while maintaining acoustic performance standards. Environmental documentation addressed impacts on tree removal, cultural resources, and wildlife protection through specialized surveys and mitigation planning.

Key Project Components:

• Designed eight separate I-210 freeway sound walls, achieving significant cost and time savings through strategic realignment and straightening

• Prepared comprehensive PA documents, including APS bridges, supplemental project reports, plan layouts, and alternative cost analyses

• Completed extensive environmental documentation, revisiting 2007 NBSSR reports, ADL reports, and cultural/historical assessments

• Conducted specialized bird surveys during the March-April compliance period, addressing tree removal impacts and NESMI approval conditions

• Developed detailed tree management plans, including removal and replanting strategies for environmental mitigation

• Delivered PS&E using Caltrans guidelines, progressing through 60% unchecked plans, 95% QC PS&E, and 100% PS&E submittals

• Coordinated complex multi-agency collaboration with Caltrans, city officials, stakeholders, and design teams, meeting aggressive funding deadlines

The sound wall implementation demonstrates expertise in complex freeway infrastructure projects, balancing acoustic performance, environmental protection, and community impacts. Strategic design optimization and environmental compliance provided enhanced noise mitigation for La Cañada Flintridge residents, meeting strict regulatory and funding requirements.