Mokelumne Trail Bicycle/Pedestrian Overcrossing

The Mokelumne Trail Bicycle/Pedestrian Overcrossing The Mokelumne Trail Bicycle/Pedestrian Overcrossing project will construct a pedestrian and bicycle bridge that spans Highway 4 – closing a gap along the Mokelumne Trail, and providing safe access for bicyclists and pedestrians. The overcrossing will include a multi-span bridge with a column in the Highway 4 median. Bridge approaches

State Route 239 Corridor Study

Desktop Project Menu View State Route 239 Corridor Study The State Route 239 (SR239) Corridor Study is a legislatively approved, but unconstructed route in the California state highway system. The purpose of this study is to determine the ultimate concept and alignment for the route in the context of the regional transportation network that includes

Interstate 680 HOV Completion and Express Lanes

Interstate 680 HOV Completion and Express Lanes The I-680 HOV Completion and Express Lanes project will construct a high occupancy vehicle (HOV) lane on southbound I-680 between North Main Street in Walnut Creek and Rudgear Road in Alamo and convert the HOV lane to an express lane on southbound I-680 from just south of Marina

Shared Autonomous Vehicle Pilot Program

Shared Autonomous Vehicle Pilot Program CCTA is leading a pilot demonstration project to test an electric, low-speed, multi-passenger autonomous vehicle manufactured by EasyMile that are not equipped with a steering wheel, brake pedal, or accelerator. These vehicles can help connect residents to existing transit options, schools, and business centers with zero emission, and offer a

A group of people standing in front of a tunnel

Caldecott Tunnel Fourth Bore

On Friday, November 15, 2013, CCTA and project partners Caltrans, Metropolitan Transportation Commission, and Alameda County Transportation Commission cut the ribbon on the Caldecott Fourth Bore, signifying the successful completion of a monumental engineering feat – and the long-awaited start of smoother traffic flow along a critical corridor for 160,000 motorists each day.

State Route 4 Operational Improvements (I-680 to Bailey Road)

State Route 4 Operational Improvements (I-680 to Bailey Road) The State Route 4 (SR4) Freeway Performance Initiative (FPI)/Corridor Study Management Plan (CSMP) and the SR4 Integrated Corridor Analysis (ICA) identifi ed several elements to improve operations on SR4. The SR4 Operation Improvements Project includes a continuation of a High Occupancy Vehicle (HOV) lane on eastbound

State Route 242 / Clayton Road Ramps

State Route 242 / Clayton Road Ramps State Route 242 (SR242) is a 3.4-mile long connector freeway that links I-680 to State Route 4. In addition, the SR242 corridor serves commercial, light industrial and residential land uses in the City of Concord. The interchanges at Clayton Road and Concord Avenue are considered the primary access