Welcome to Caltrans District 4
D4 Icon
District Director BIJAN SARTIPI

SR84 Niles Canyon

Check Current
Highway Conditions

 
You can also call
1-800-427-ROAD.

 

State Route 84 Niles Canyon Safety Improvements

Niles Canyon Corridor Overview
Caltrans currently has three projects proposed for the Niles Canyon corridor. 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

Upcoming Events
No public meeting are scheduled at this time.

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

  • 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


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
  • Start construction July 2016
  • End construction Fall 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

Available Documents

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 EIR.
Caltrans held two public meetings to review the EIR on February 18, 2015 and March 23, 2015.

Tentative Schedule
Caltrans plans to recirculate the Environmental Document in Fall 2016.

Available Documents
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


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.