Arroyo De La Laguna Bridge Project

Caltrans’ maintenance inspections of the Arroyo De La Laguna Bridge Project found scouring around one of the foundations of the bridge that can potentially undermine the footing and affect the structural integrity of the bridge.

The project proposes to rehabilitate the foundation and substructure and to replace the bridge railings of the Arroyo De La Laguna Bridge on State Route 84 between Pleasanton-Sunol Road and Main Street, near the town of Sunol in Alameda County. Scope of the project include:

  • Rehabilitate existing bridge foundations to mitigate scouring at bridge foundation.
  • Replace the existing bridge railings with bridge railings that meet current standard.
  • Provide ADA compliant sidewalk, increasing the sidewalk from the current five foot to six foot wide sidewalks.
  • Increase shoulder width from current 1-foot wide to 2’-3” wide shoulders.

The proposed environmental document level for this project will be an Environmental Impact Report/Environmental Assessment. Alternatives to address purpose and need of the project will include possible replacement of existing bridge.

Schedule:
Begin Environmental Studies Fall 2018
Complete Environmental Studies Fall 2021
Complete Design Fall 2023
Begin construction Spring 2024

You can also follow us on Twitter @CaltransD4 or email us at nilescanyonprojects@dot.ca.gov to receive updates on safety improvements on State Route 84.