25th Avenue Grade Separation
Location: San Mateo, CA
Project Scope: Track grade separation and new train station platform
Disney Construction and Shimmick Construction teamed up to raise the train tracks from CA-92 to Hillsdale Boulevard and build the new elevated Hillsdale Station at E. 28th Avenue. The project included constructing 5 new bridges, elevating 2 miles of train tracks up to 20 feet above grade, relocating utilities, and coordinating complex track movement and staging. These improvements enhanced pedestrian and motorist safety, reduced traffic congestion by eliminating the at-grade crossings at 25th Avenue, and added two new undercrossings at 28th and 31st Avenues.
Unique Challenges: Working next to live trains and scheduling around peak train schedules so that construction would not impact train flow.
Caltrain San Francisco Bridges
Location: 22nd / 23rd St. and Paul Avenue, San Francisco
Project Scope: Remove and replace three bridges
These three bridges did not meet seismic safety stands and had to be replaced to ensure the safety of Caltrain passengers and the local community. Utilities were temporarily supported while the new bridge was built around it. The work entailed: retrofitting abutments to support the new structure, upgrading historic water systems.
Unique Challenges: Overhead constraints that needed to be taken into consideration, along with live train schedules and pedestrian crossing.
San Bruno Box Culvert
Location: San Bruno, CA
Project Scope: Relocate and upgrade storm drainage
Disney was contracted to relocate and upgrade major storm drain facilities and fiber optic lines that cross under the tracks at San Mateo and Angus Avenues as part of the San Bruno Grade Separation Project. This work entailed: replacing box culverts, installing temporary bypass so the grade separation could be completed. This job was completed ahead of schedule, Disney received a reward for early completion of project.
Unique Challenges: Working next to railroad track, accommodating the train schedule.
