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
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: