Clement Avenue/Tilden Way Improvement Project

Stages 2 and 3 of the project are nearing completion and construction will transition to Stage 5A. The following closures will take place through October:

  • Blanding Avenue
    • Closed: Southbound traffic only between southern Bridgeside Shopping Center entrance and Tilden Way.
    • Open: Northbound traffic only via right turn from westbound Tilden (driving towards Alameda)
  • Fernside Boulevard, between Tilden Way and Versailles Avenue

See below for construction detour maps and project information. Please note that length of closures are subject to change.

The City recognizes the challenges of construction detours and appreciates the patience of community members during this time. When complete, this project will improve safety for all street users and reduce vehicle delays on and off the island.

Stages 2 and 3 of the project are nearing completion and will transition to Stage 5A, which will include a partial opening of the new roundabout and shared use pathway on Tilden Way between Broadway and Fernside Boulevard. 

The Bridgeside Shopping Center will remain open throughout construction. Detour signs will be in place to route traffic around the road closures.

See the maps below for routes around this area:

Stage 5A Circulation Route(PDF, 1MB)

Stage 5A Detour Route(PDF, 4MB)

Stage 5A Pedestrian Route(PDF, 1MB)

Suggested Routes to Edison Elementary School(PDF, 2MB)

Street parking and driveway access within the work area will be affected. “No Parking” signs will be posted 72 hours in advance of any work. Nearby residents and businesses will receive more information directly as construction progresses. 

In early October, Stage 5B will begin with the full opening of the roundabout at the intersection of Tilden Way/Blanding Avenue/Fernside Boulevard to vehicular traffic. The Fernside Boulevard approach to Tilden Way will also be open.

Blanding Avenue between Broadway and Tilden Way will remain closed for the duration of Stage 5B, which is scheduled for completion in January 2027. Detours for Blanding Avenue will be provided via Broadway and the new Clement Avenue roadway extension.

Detours will be provided for pedestrians to use the new sidewalks and pathways south of Tilden Way, between Broadway and Miller-Sweeney Bridge. Crossings between Blanding Avenue and Fernside Boulevard will remain closed until the completion of Stage 5B construction.

The Bridgeside Shopping Center will remain open throughout construction and can be accessed from Tilden Way via the Clement Avenue extension and Broadway.

See the maps below for routes around this area:

Stage 5B Circulation Route(PDF, 1MB)

Stage 5B Blanding Detour Route(PDF, 1MB)

Stage 5B Pedestrian Route(PDF, 1MB)

Street parking and driveway access within the work area will be affected. "No Parking" signs will be posted 72 hours in advance of any work. Nearby residents and businesses will receive more information directly as construction progresses.

Stage 1: October 20, 2025 through May 2026 (completed)

  • Mobilize for construction
  • Construction for Clement Avenue extension
  • Pedestrian improvements north of Tilden Way
  • Removal of railroad tracks, platform, and equipment

Stages 2-3: May through September 2026

  • Implement Fernside Boulevard closure at approach to Tilden Way with detours around road closure
  • Construction for roundabout at Tilden Way/Fernside Boulevard/Blanding Avenue intersection
  • Temporary Tilden Way roadway north of roundabout
  • Construction for pedestrian islands/medians at south side of Tilden Way/Fernside Boulevard/Blanding Avenue intersection

Stage 4: October 2026

  • Construction of pedestrian improvements west side of intersections at Tilden Way/Broadway and Tilden Way/Fernside Boulevard/Blanding Avenue
  • Complete connection of Clement Avenue extension to Tilden Way

Stage 5: October 2026 through January 2027

  • Open roundabout and Fernside Boulevard approach to Tilden Way
  • Implement Blanding Avenue closure at approach to Tilden Way with detours around road closure
  • Construction for Blanding Avenue approach improvements to Tilden Way
  • Pedestrian improvements east side of intersection at Tilden Way/Broadway
  • Complete landscaping/irrigation/dog park improvements
  • Final paving improvements

The Clement Avenue/Tilden Way Improvement project will improve safety for all street users and reduce vehicle delays on and off the island. It includes:

  • Roadway reconfiguration with a roundabout at Tilden Way/Blanding Avenue/Fernside Boulevard
  • New bikeways and walkways to complete the Cross Alameda Trail from the Miller-Sweeney/Fruitvale Bridge to Seaplane Lagoon
  • A dog park, open space, and landscaping
  • Bus stop and accessibility improvements
  • A westbound extension of Clement Avenue from Broadway to Tilden Way
  • Pedestrian and bicyclist safety improvements at Tilden Way/Broadway
  • Pavement resurfacing
Clement/Tilden design concept with roundabout, dog park, and bike and ped facilities

Download the design concept(PDF, 2MB)

Safety

Roundabouts reduce fatal and severe injury crashes up to 78 percent compared to traffic signals, and Clement/Tilden is a High Crash Intersection. Road diets reduce crashes up to 47 percent. 

Connections

The Clement Avenue/Tilden Way project uses the abandoned railroad right-of-way at Clement Avenue and Tilden Way to extend the Cross Alameda Trail between Broadway and the Miller-Sweeney/Fruitvale Bridge and to improve the truck and bus routes in this area. It connects to the City's Clement Avenue Complete Street project, and to the City of Oakland's Fruitvale Avenue improvements. 

Funding

In 2017, the Alameda County Transportation Commission awarded a grant to the City of Alameda for $10 million including local match to close the gap in the Cross Alameda Trail and truck route.  This project is funded by Measure BB, Alameda County's transportation sales tax. In July 2024, San Francisco Bay Area Rapid Transit (BART) awarded a grant to the City of Alameda for $2.1 million to include bicycle and pedestrian safety improvements at the intersection of Tilden Way and Broadway.

More information

Roundabouts

Roundabouts reduce the types of crashes where people are seriously hurt or killed by up to 78 percent when compared to signalized intersections.  Roundabouts result in lower vehicle speeds around the roundabout. Crashes that occur will be less severe because of this reduced speed and the more “sideswipe” nature of crashes.  Pedestrians are generally safer at roundabouts, and are faced with simpler decisions at a time. Videos and presentations on roundabouts are as follows:

Road Diets

The reduction of motor vehicle travel lane(s) provides an opportunity to reallocate space for other uses such as bike lanes and a center two-way left-turn lane.  According to the Federal Highway Administration's informational guide, streets with travel lane reductions have multiple benefits for people driving, walking and bicycling, such as:
  • Decreases vehicle travel lanes for pedestrians to cross;
  • Allows for better visibility of pedestrians waiting or attempting to cross the street;
  • Improves circulation for bicyclists when a bikeway is added;
  • Reduces rear-end, sideswipe and left-turn collisions by at least 19 percent and up to 47 percent through the use of a center two-way left-turn lane;
  • Improves speed limit compliance by three to five miles per hour, which reduces the severity of collisions; and
  • Improves travel flow since through vehicles are separated from left turning vehicles.

The Federal Highway Administration (FHWA) has a case studies document and additional resources:

In March 2023, the City Council endorsed the design concept and authorized the consultant amendment to proceed with design - staff report is here. In July 2024, BART and the City of Alameda signed an agreement securing $2.1 million in Safe Routes to BART funding, which is from voter-approved Measure RR funds. Construction began in 2025 after the Department of Toxic Substances Control approved the soil cleanup plan.

Project Timeline 2016-2027

2026-2027

  • Construction continues through 2026 and is expected to be completed by early 2027

2025

2024

  • Summer: Prepare detailed design
  • Fall: Submittal of the soil cleanup plan for review by the Department of Toxic Substance Control
  • Late: Complete design

2023

  • Jan 25: AC Transit Interagency Liaison Committee - presentation(PDF, 4MB)
  • Jan 25: Transportation Commission endorsed recommended concept - Staff report: click here
  • March 7: City Council (request approval of recommended concept and consultant amendment) - WITHDRAWN from agenda - agenda
  • March 15: Site tour with the Mayor and City Council - corner of Fernside Blvd. and Tilden Way - special meeting announcement is shown here
  • March 21: City Council (endorsed recommended concept and consultant amendment) - staff report: click here
  • Preliminary design

2022

2021

  • August: City purchased Clement/Tilden property from Union Pacific via eminent domain for $1.54 million

2019

  • June: City Council appropriated an additional $2 million in Measure BB grant funds and $470,000 of local match for fiscal years 2019 to 2021 as shown in the CIP Project Sheet(PDF, 176KB)

2018

  • July: City Council authorized the pre-construction grant funding agreement with Alameda CTC totaling $2 million in Measure BB funds and $445,000 in local match - Staff report: click here
  • Sept: City Council approved taking action to acquire Union Pacific property via eminent domain for the Clement Avenue/Tilden Way extension - Staff report: click here

2017

  • April: Won an Alameda CTC Measure BB grant totaling $8.4 million with $1 million local match to fund the right-of-way purchase, planning, environmental clean-up, design and construction
  • June: City Council appropriated $1.7 million in Measure BB grant funds and $548,000 of local match for fiscal years 2017 to 2019 as shown in the Capital Improvement Program Project Sheet(PDF, 313KB)

2016

  • October: Alameda CTC CIP grant submittal

Project Status

Stages 2 & 3 nearing completion

 

Next Up: Stage 5 construction from September 2026 thru January 2027

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Project Contacts

Public Works/Engineering

Ali Hatefi, Senior Engineer

ahatefi@alamedaca.gov

510-747-7972

 

Construction Manager (for details about construction)

Kirk Zuraek

kzuraek@4leafinc.com

510-856-6820

Quick Links

> AC Transit Line O Bus Detours

> Suggested Routes to Edison Elementary School August-October 2026

> Roundabouts in Alameda

> Building Safer Streets

> Vision Zero

> Oakland Alameda Access Project

More Information

Learn more information on this project from the City's 2023-2025 Capital Budget CIP Project Sheet.

Funding

This project is funded by Measure BB, Alameda County's transportation sales tax, Measure RR (the Safe Routes to BART), Transportation Development Impacts Fees (DIF), Construction Impact Fees (CIF), Highway Users Tax Account (HUTA Gas tax), and General Fund (Dog Park Construction).

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