Pilarcitos & San Gregorio Creek Scour Mitigation

Locations: Half Moon Bay, CA, and La Honda, CA
Project Scope: Rebuild creek and embankments

Disney Construction was contracted by Caltrans to remove and reconstruct the existing creek beds and embankments beneath Highways 1 and 84. The project aimed to reduce and mitigate scour caused by heavy rains and high creek levels, while protecting the existing bridge foundations. Work included excavating and removing the existing creek bed and embankments, importing over 10 million pounds of material, and rebuilding the channel with large rock and rootward features to improve flow stability and enhance fish habitat.

Unique Challenges: Working with environmental restrictions with a strict 3-month timeline.

Putah Creek Bridge Replacement

Location: Winters, CA
Project Scope: Refurbish bridge foundation

Disney was contracted to refurbish the foundation of the Winters Road bridge as part of a joint venture between Solano County and the City of Winters for a $12.2 million dollar infrastructure improvement project to replace an aging historic concrete arch bridge. This project also improved lighting, pedestrian access and enhanced viewing of Putah Creek.

Unique Challenges: Drilling 90-foot-deep shafts in a challenging environment.

Caltrain San Francisco Bridges

Location: 22nd / 23rd St. and Paul Avenue, San Francisco
Project Scope: Remove and replace three bridges

Disney was contracted to replace three bridges to ensure the safety of Caltrain passengers and the local community. The work entailed: replacement of the middle support beams, retrofitting abutments to support the new structure, upgrading historic water systems.

Unique Challenges: The center bent on each bridge extended 40 to 70 feet below ground adjacent to active train tracks, requiring special shoring techniques.

Coliseum Way Bridge Seismic Retrofit

Location: Coliseum Bridge, Oakland, CA
Project Scope: Seismic retrofitting for bridge

Disney was contracted to seismically retrofit the Coliseum Way Bridge at the entrance to the Oakland Coliseum. The bridge was retrofitted in segments so that it could remain serviceable throughout the length of the project. The work entailed: extensive planning and scheduling, select demolition, CISS Piles.

Unique Challenges: Work was conducted over an environmentally sensitive creek and tidal area.