Four rail bridges located in the city's North Central neighborhood are 103 years old and are considered structurally unsound. They must be replaced in order to maintain safe rail operations and meet federal, state and local seismic safety standards.
Caltrain, in cooperation with the city of San Mateo, is preparing to replace the bridges as soon as possible. The bridges are located at Tilton, Monte Diablo, Santa Inez and Poplar avenues.
Track heights are being raised as part of the bridge replacement project to reflect current state and federal design mandates and San Mateo's desire for increased vehicular clearances on city streets. To accommodate this height increase, new retaining walls and fencing will be constructed on the Caltrain right-of-way. The project will require the removal of vegetation, including shrubs, weeds, bushes and trees.
The project will ensure that the bridges are safe and equipped to meet the region's future transportation needs, including new electrified rail service, and improved traffic flow on city streets.