San Bruno Grade Separation Project

Work on the San Bruno Grade Separation Project will take place Friday, June 24 to Friday, July 1. Starting Friday at 8 p.m. until Monday at 4 a.m., crews will work around the clock to continue upgrading the signal system and trains will run on a single track. “Single tracking” occurs when trains run in both directions on the same track. Northbound passengers will board on the southbound platform for this weekend only. All patrons should follow the directions of station signs and identified ambassadors. Scheduled train stops at the station will not be affected by the construction.

Additional weekend work includes the running of a test train between the South San Francisco and Millbrae stations to evaluate the operational quality of the upgraded signal systems. Trains will sound warning horns as they approach crossings. This work is scheduled to take place between 10:30 p.m. Sunday, June 26 and 5 a.m. Monday, June 27.

Weekday work will take place between the hours of 7 a.m. and 5 p.m. This work includes upgrades to the signal systems, preparation for signal system improvements the following weekend, track work, excavation, drainage improvements at the temporary station, construction of retaining walls for the temporary station, and sanitary sewer and utility relocations. Relocation of sanitary sewers and utilities will primarily occur on Huntington and Angus avenues, and around the intersection of San Bruno and San Mateo avenues and may require temporary lane closures. Traffic cones and flaggers will direct motorists and pedestrians around the affected areas.

Weeknight work will take place from 8 p.m. to 4 a.m., outside of peak passenger service hours. This work will include upgrades to the signal systems, excavation, drainage improvements at the temporary station, construction of retaining walls for the temporary station, drainage improvements for the shoofly, and relocating and installing pedestrian gates at Scott Street. Digging work will require the use of a backhoe, mini-excavator and jackhammer. At times, noise levels could be as high as 75 decibels. Crews will use generators to power portable light towers. Night work will be done in accordance with Caltrain and city agreements and ordinances.

The $147 million project will elevate the Caltrain tracks above three existing at-grade street crossings at San Bruno, San Mateo and Angus avenues. A new elevated Caltrain station will be constructed between San Bruno and San Mateo avenues, replacing the existing station at Sylvan Avenue.

Santa Clara Station Improvement Project

Work on the Santa Clara station will take place from 7 a.m. to 4 p.m. Monday, June 27 to Friday, July 1. The work will include continued construction on the pedestrian underpass connecting the north- and southbound platforms, which will allow two trains to pass through the station at the same time and will improve safety for pedestrians in the station.

For the safety of the traveling public and workers in the area, it is important that patrons wait on the southbound platform, closest to the station building, for all trains. People should observe all posted signs and follow directions from identified ambassadors and conductors. Scheduled train stops at the station will not be affected by the construction. Tickets can still be purchased at the existing ticket vending machines.

The south parking lot at the station will be closed until the station improvement project is completed. Passengers are asked to follow signs directing them to additional parking on the western side of the station.

The work is part of an 18-month station improvement project that will add a new wider, longer center-boarding platform and extend the southern platform 150 feet. For additional information, call the Caltrain construction outreach information number at 650.508.7726 or visit us online.

Jerrold Avenue Bridge Replacement Project

Crews will continue building retaining walls, bridge support structures, and backfilling areas along the tracks by Jerrold Avenue and Rankin Street in San Francisco from Monday, June 27 to Friday, July 1. The work will be done from 7 a.m. to 5 p.m.

Station Security Improvements Project

Monday, June 27 to Thursday, June 30, crews will continue installing bollards at the Millbrae station as part of a project to enhance security at three Caltrain stations: San Francisco at 4th and King streets, Millbrae, and San Jose Diridon. Work will occur from 8 a.m. to 4 p.m.

San Mateo Bridges Rehabilitation Project

Caltrain will continue retrofitting four rail bridges in San Mateo, Monday, June 27 to Friday, July 1. During the day, work will take place between the hours of 8 a.m. and 5 p.m. The project involves seismic improvements to the bridges that cross Poplar, Santa Inez, Monte Diablo, and Tilton avenues.

Construction activities include installing columns for the bridges and building temporary support structures. Each street will have one lane of traffic closed. Concrete barriers and flaggers on site will direct motorists and pedestrians.

After the retrofit is complete, the streets will need to be resurfaced and the sidewalks repaved. This work will take place from 8 p.m. to 4 a.m. One street will be closed at a time and signage will be provided to direct traffic to alternate routes. Caltrain asks that vehicular and pedestrian traffic follow posted traffic control signs and barriers when utilizing these areas. Crews will make their best effort to work as quietly as possible.

Santa Clara County Grade Crossing Improvements

Crews will work with the City of Mountain View on integration between the traffic and rail signals. Monday, June 27 to Tuesday, June 28, between the hours of 8 p.m. and 5 a.m., crews will work at the Rengstorff Avenue and Castro Street crossings. During this time, flaggers will direct motorists through grade crossings. Crews may also use portable generators to power light towers for night work.

San Jose Diridon Station Improvements Project

Caltrain will conduct signal work at the San Jose Diridon station from Saturday, June 25 to Friday, July 21 between the hours of 7 a.m. and 4 p.m. This is part of the 18-month long San Jose Diridon and Santa Clara Stations Improvements Project. The signal system upgrades that will be constructed at both ends of the San Jose Diridon terminal will improve train operations by allowing quicker train movement in and out of the terminal.

Maintenance

Caltrain will perform routine maintenance at several locations next week. To avoid delays to passengers, the work will take place Sunday through Thursday from 8 p.m. to 6 a.m. There will be some construction noise from equipment used to accomplish the work, but crews will work as quietly as possible. For more information about this type of work, click here.

San Francisco to Belmont
Sunday, June 26 to Thursday, June 30, crews will replace cross ties and resurface tracks between the 22nd Street and Belmont stations.

South San Francisco to Millbrae

Sunday, June 26 to Monday, June 27, crews will run test trains to evaluate the operational quality of signal systems between the South San Francisco and Millbrae stations. This work includes the sounding of warning horns as trains approach crossings and is part of the San Bruno Grade Separation project.

San Jose

Sunday June 27 to Thursday, June 30, crews will weld tracks and replace rails from the College Park station to just south of the San Jose Diridon station.