State Route 84 Niles Canyon Safety Improvements

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Niles Canyon Corridor Overview
Caltrans previously proposed three projects for the Niles Canyon corridor. Recently, a project to address scour issues on the Arroyo De La Laguna Bridge was programmed to allow for environmental studies to begin.  For more background information, please click here Background on Niles Canyon Corridor Projects

1) Niles Canyon Safety Improvements Project (Short-Term Improvements)
2) Niles Canyon Safety Improvements Project (Medium-Term Improvements)
3) Alameda Creek Bridge Replacement Project
4) Arroyo De La Laguna Bridge Project

Upcoming Events
Two public open-forum hearings will be held to solicit comments on the Revised Draft EIR/EA for the Alameda Creek Bridge Replacement Project:

Tuesday, February 7, 2017 from 6-8 PM
Sunol Glen Elementary School Cafeteria
11601 Main Street
Sunol, CA 94586

Tuesday, February 21, 2017 from 6-8 PM
Vallejo Mills Elementary School Multi-Purpose Room
38569 Canyon Heights Drive
Fremont, CA 94536

Click here (PDF) to view the Alameda Creek Bridge Replacement Project Revised Draft EIR/EA

Contact
You can follow us on Twitter @CaltransD4 or email nilescanyonprojects@dot.ca.gov to join the Niles Canyon list and receive updates on Caltrans projects on State Route 84.

Recent Events

  • November 2016 - Two public open-forum hearings was held to solicit comments on the Draft Environmental Impact Report/Environmental Assessment (EIR/EA) for the Niles Canyon Safety Improvements Project:


  • Wednesday, November 2, 2016 from 6-8PM
    Niles Elementary School
    371421 2nd Street
    Fremont, CA 94536

    Monday, November 7, 2016 from 6-8PM
    Sunol Glen Elementary School
    111601 Main Street
    Sunol, CA 94586

    Click here to view the Niles Canyon Safety Improvements Project Draft EIR/EA.
    Click here to view the Draft EIR/EA Powerpoint Presentation
  • October 14, 2016 – Caltrans released the Draft EIR/EA for the Niles Canyon Safety Improvements Project. Please email your comments on the Draft EIR/EA to nilescanyonprojects@dot.ca.gov or submit written comments to

    Caltrans District 4, Office of Environmental Analysis,
    Attn. Elizabeth White
    111 Grand Avenue MS 8B
    Oakland, CA 94612
  • Please submit your comments by Friday, December 2, 2016.

  • October 14, 2015 – Caltrans is preparing an Environmental Impact Report (EIR)/Environmental Assessment (EA) for the Niles Canyon Safety Improvements Project (Medium-Term Improvements). A public scoping meeting was held at Sunol Glen Elementary School on October 14, 2015 to request input from agencies, local governments, elected officials, and the public on the scope of the upcoming environmental document. All comments must be received by 5 p.m. on Friday, October 30, 2015. Please submit written comments to Caltrans District 4, 111 Grand Avenue, MS 8B, Oakland, CA 94612 Attn: Liz White or via email to nilescanyonprojects@dot.ca.gov.
    Scoping Meeting Presentation

  • October 11, 2015 – Caltrans participated in the Alameda County sponsored Niles Canyon Stroll & Roll event on Sunday, October 11, 2015. State Route 84 was closed to motor vehicle traffic between 8am-2pm between Mission Boulevard and Pleasanton/Sunol Road and allowed the public to explore the canyon in conjunction with East Bay Regional Park District’s recently completed feasibility study for a multi-use bicycle path through Niles Canyon.

  • September 3, 2015 – Caltans held a stakeholders meeting on September 3, 2015 primarily to provide updates regarding Caltrans’ plans to mitigate environmental impacts from the terminated Niles 1 Project. The meeting was held at the Caltrans District 4 Office in Oakland, CA. Niles Canyon Stakeholder Meeting Presentation September 3, 2015


  • Background on Niles Canyon Corridor Projects

    In Fall 2011, Caltrans stopped construction of the old Niles Canyon Safety Improvement Project, also known as Niles 1 Project. Since that time, Caltrans has acknowledged the public’s concerns regarding the future improvements to State Route 84 in Niles Canyon and the need for more public involvement in the planning process. Caltrans is committed to soliciting the public’s feedback and keeping all interested parties informed of progress throughout the planning for improvements on State Route 84.

    In 2012, with Caltrans’ cooperation, the Federal Highway Administration (FHWA), conducted an independent Road Safety Assessment of State Route 84 to address safety needs and improvements along the corridor. Caltrans also assembled a multidisciplinary team from the agencies immediately involved with State Route 84 and conducted a Value Analysis Study from the results of the FHWA’s assessment. A Value Analysis Study is a tool Caltrans uses to evaluate the cost-effectiveness of the solution to an engineering problem. It is a function-oriented, systematic team approach, used to analyze and improve value in a product, facility design, system or service. It is a powerful methodology for solving problems and/or reducing costs while improving performance and/or quality.

    On Monday, July 30, 2012 Caltrans held a public meeting to allow both the FHWA and the Value Analysis teams to present their findings and to inform the community that Caltrans had stopped work on the Niles Canyon 1, 2, and 3 projects. Below are links to the Road Safety Assessment and Value Analysis.

    Available Documents
    Based on the findings of FHWA’s Road Safety Assessment Report, Caltrans currently proposes three separate projects to address the safety, operational and structural deficiencies in the corridor.
    1. Niles Canyon Safety Improvements Project (Short-Term Improvements)
    2. Niles Canyon Safety Improvements Project (Medium-Term Improvements)
    3. Alameda Creek Bridge Replacement Project A fourth project in the Niles Canyon corridor was programmed in FY 16/17 to address the bridge scour issue at the Arroyo De La Laguna Bridge.

    Niles Canyon Safety Improvements Project (Short-Term Improvements)

    The Niles Canyon Short-Term Improvements Project proposes to implement safety improvements at spot locations along the Route 84 Corridor between SR-238 (Mission Boulevard) and I-680. Scope of work include:
    • Install roadside and metal beam guard rail delineators
    • Bridge railing delineators
    • High friction surface treatment
    • Shoulder and median rumble strips
    • Reflective dots and optical bars
    • Sharrows
    • Object markers
    • Left turn refuge at Palomares Road
    To accommodate bicyclists on State Route 84, Caltrans will implement the following measures for the construction of shoulder rumble strips at spot locations:
    • Limit placement of shoulder rumble strips to locations with 400 feet or more of continuous 4-foot shoulder
    • Limit the width of the rumble strips to the minimum 6 inch wide strips instead of 12 inch strips
    • Implement openings at the beginning and ends of the rumble strip area and at driveways and intersections
    • Implement a ‘skip’ pattern of 12-foot openings for every 60-foot of shoulder rumble strips
    Schedule
    • Construction completed August 2016
    Available Documents

    Niles Canyon Safety Improvements Project (Short-Term Improvements)
    Niles Canyon Safety Improvements Project (Short-Term Improvements) Categorical Exemption/Categorical Exclusion
    Niles Canyon Safety Improvements Project (Short-Term Improvements) Notice of Exemption

    Niles Canyon Safety Improvements Project (Medium-Term Improvements)

    The Niles Canyon Safety Improvements Project proposes to implement safety improvements at spot locations along the Route 84 Corridor between SR-238 (Mission Boulevard) and I-680. Proposed scope of work include:
    • Construct improvements at low-speed curve
    • Remove fixed objects including about 50 trees and 20 utility poles within clear recovery zone
    • Install two rockfall protection systems
    • Widen shoulder at Paloma Way and Sims Park
    • Replace bridge railing at Alameda Creek Bridge and Overhead
    • Remove sidewalk and construct safety shaped barrier at Silver Springs Undercrossing
    • Install signals at Pleasanton/Sunol Road and Main Street intersection
    • Install speed feedback signs throughout the corridor
    • Install dynamic warning system near Silver Springs Undercrossing and Palomares Road
    • Install active warning system for bicyclists
    • Replace Stonybrook box culvert with a clear span bridge
    • Install temporary railing, lighting, and guardrails
    Tentative Schedule
    • Public Scoping Meeting October 14, 2015
    • End of Scoping Comment Period October 30, 2015, 5:00pm
    • Issue Draft Environmental Document Fall 2016
    • Final environmental document Early 2017
    • Complete design Fall 2018
    • Start construction Spring 2019
    • Complete construction Spring 2021

    Niles Canyon Safety Improvements Project (Medium Term Improvements)
    Available Documents

    Available Documents

    Niles Canyon Safety Improvements Project Draft EIR/EA.
    Draft EIR/EA Powerpoint Presentation
    Niles Canyon Safety Improvements Project Natural Environment Study
    Niles Canyon Safety Improvements Project Draft EIR/EA
    Niles Canyon Safety Improvements Project (Medium-Term Improvements) Fact Sheet
    Niles Canyon Safety Improvements Project Map
    Notice of Preparation for the Niles Canyon Safety Improvements Project (September 30, 2015)
    Scoping Meeting Presentation (October 14, 2015)


    Alameda Creek Bridge Replacement Project

    Background
    In March of 2013, Caltrans held a meeting with project stakeholders to introduce the community to the proposed improvements to the Alameda Creek Bridge Replacement Project. The community raised concerns with the proposed project. Caltrans agreed to explore different alternatives to minimize environmental impacts while still meeting project goals.

    On December 5th, 2013, Caltrans held another stakeholders meeting to update the community of Caltrans’ findings in the review of comments we received from our March 2013 meeting. A copy of the presentation can be found at the link below.

    February 25, 2014 and March 4, 2014, Caltrans held two scoping meetings to request input from the general public, local agencies and local government's input in determining the appropriate scope of the environmental document for the Alameda Creek Bridge Replacement Project. A copy of the presentation from the March 4, 2014 meeting and handout can be found at the link below.

    In February 2015, Caltrans circulated the Alameda Creek Bridge Replacement Project Environmental Impact Report (EIR). Caltrans held two public meetings to review the EIR on February 18, 2015 and March 23, 2015.

    In January 2017, Caltrans circulated the Alameda Creek Bridge Replacement Project Revised Draft EIR/Environmental Assessment (EA). Caltrans held two public meetings to review the EIR/EA on February 7, 2017 and February 21, 2017.

    In October 2017, Caltrans released the Alameda Creek Bridge Replacement Project Final EIR/EA. This Final EIR/EA includes responses to comments received for the Revised Draft EIR/EA.

    Tentative Schedule
    • Complete design Spring 2019
    • Start construction Winter 2019
    • Complete construction Winter 2022

    Available Documents
    Alameda Creek Bridge Replacement Project Final EIR/EA (72MB)
    Alameda Creek Bridge Replacement Project Revised Draft EIR/EA (PDF)
    December 2013 Stakeholders Meeting Presentation.
    March 4, 2014 scoping meeting presentation
    Alameda Creek Bridge Replacement Natural Environment Study
    Alameda Creek Bridge Replacement Natural Environment Study Addendum
    January 2015 | Alameda Creek Bridge Replacement Project Draft Environmental Impact Report


    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 Initial Study.

    Schedule:
    • Begin environmental studies Early 2017
    • Complete Environmental Studies Late 2018
    • Complete Design Mid 2020
    • Begin Construction Early 2021
    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.



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