Zaca Station to Orcutt Drainage Rehabilitation

ongoing

As a result of inventory and hydraulic analysis activities performed by the Culvert Inspection Program of the District Hydraulic Branch, 13 drainage culverts within the project limits were identified to be in need of repair or replacement. All identified drainages have varying levels of damage, shape loss, joint separation, and outlet scouring. The proposed strategy for each culvert varies depending on each site condition. Eight culverts will be repaired via the cut-and-cover method, usually accomplished by digging a trench with an excavator. At one location, the project proposes to cut across the U.S. Route 101 southbound lanes and will require staged construction to ensure that at least one lane of traffic is available at all times. The remaining drainage improvements include other strategies such as: stabilizing the channels and reconstructing ditches, placing new or replacing existing pipes, culvert invert paving, and joint repair. In most cases, the repair work is not anticipated to have a significant impact on traffic flow because it will take place in the center median or beyond the outside shoulder. The project proposes 16 lighting improvements at two different interchanges: the Los Alamos Interchange and the Cat Canyon Intersection. The new installations and replacement of fixtures will include demolition or replacement of fixtures and/or foundations, related excavation for new foundations, installation of service cabinets, and utility trenching. Other existing lights can be found at interchanges throughout the project limits. Various existing types of Transportation Management System elements occur throughout the project limits. Transportation Management Systems are implemented by Caltrans to improve the flow of vehicle traffic and improve safety. Technologies such as closed-circuit television cameras, microwave vehicle detection systems, and traffic count stations are used to collect and send traffic data to transportation management centers. The project proposes to replace existing closed-circuit television systems at two locations. Existing microwave vehicle detection systems at two locations will also be replaced. A traffic count station will be installed at one location in both the northbound and southbound directions.