California Department of Transportation

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Project Fact Sheet

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What is the State Route 99 at Pelandale Avenue Interchange Reconstruction Project
The State Route 99 (SR-99) / Pelandale Avenue interchange is located at the incorporated limits of the City of Modesto. Portions of the interchange are located within the City and portions are located in unincorporated Stanislaus County. It is proposed to reconstruct the SR-99 interchange at Pelandale Avenue to reduce the growing rate of traffic congestion during the design year.

What is included in the project?
Planned improvements include the following major components:

  • Replacing the existing three-lane Pelandale Avenue Overcrossing with a new
    six- lane overcrossing on a new alignment .
  • Replacing the existing on- and off-ramps. Ramps will connect to the Sisk Road
    and Salida Boulevard frontage roads, rather than Pelandale Avenue. The new
    ramp intersections will be signalized.
  • Constructing a northbound auxiliary lane on State Route 99 between the new
    State Route 99/Pelandale Avenue Interchange and the existing State Route
    99/State Route 219 (Kiernan Avenue) Interchange.
  • Constructing merge lanes on State Route 99 on the south side of the new
    Pelandale Avenue Interchange.
  • Installation of ramp meters on the new on-ramps.
  • Constructing a sidewalk on the south side of the new Pelandale Avenue Overcrossing.
  • Enhanced landscaping and structure aesthetics.

Why is this project needed?

The purpose of the project is to reconstruct the State Route 99/Pelandale Avenue Interchange to: increase capacity and improve traffic operations; enhance safety; and, provide a transportation facility consistent with local, regional, and statewide plans, and Caltrans' standards.

What's next?

  • Caltrans receives public/agency input on the environmental document during the
    30- day public review period ending July 31, 2009.
  • Caltrans integrates public/agency comments into the final environmental document.
  • Project Development Team selects the preferred alternative.
  • The final document becomes available to the public.
  • Caltrans engineers complete the project design.
  • Right of Way acquisition.
  • Construction begins.

Who can I contact for more information?

Caltrans Central Region
Gail Miller, Senior Environmental Planner
2015 E. Shields Ave., Suite 100
Fresno, CA 93726-5248
Email: gail_miller@ dot.ca.gov