Background There are currently four historical grade-separated rail crossings in the City of San Mateo which do not meet the General Order (GO) 26-D minimum vertical clearance requirement of 15 feet for roadways under the tracks. These four underpass crossings are identified as: Poplar Avenue (CPUC No. 105E-17.20-B, SM-1153, DOT No. 754896L) Santa Inez Avenue (CPUC No. 105E-17.30-B, SM-1154, DOT No. 754897T), Monte Diablo Avenue (CPUC No. 105E-17.40-B, SM-1155, DOT No. 754898A) Tilton Avenue (CPUC No. 105E-17.50-B, SM-1069, DOT No. 754899G). These rail bridges have been struck by vehicles passing beneath the structures, disrupting freight and passenger rail service. The project will raise the elevation of the tracks, enabling the Poplar Avenue and Santa Inez Avenue crossings to meet the GO 26-D vertical clearance requirement. San Mateo County Transit District (Caltrain) will raise the minimum vertical clearance at the Monte Diablo Avenue crossing from 11 feet – 1 inch to 13 feet – 2 inches. Caltrain will raise the minimum vertical clearance at the Tilton Avenue crossing from 8 feet – 6 inches to 8 feet – 7 inches. The impaired clearances at the two structures is well marked for motorists in advance of the underpasses, and the increased clearances will reduce the potential for further contact between vehicles and the bridge structures. Caltrain operates 92 passenger trains per day at the crossings with a maximum speed limit of 79 MPH. Union Pacific Railroad (UPRR) operates approximately 4 freight trains per day at the crossings with a maximum speed limit of 50 MPH. Section 12.1 of GO 26-D requires a minimum vertical clearance of 15 feet for public roadways crossing beneath railroad tracks.
Background There are currently four historical grade-separated rail crossings in the City of San Mateo which do not meet the General Order (GO) 26-D minimum vertical clearance requirement of 15 feet for roadways under the tracks. These four underpass crossings are identified as: Poplar Avenue (CPUC No. 105E-17.20-B, SM-1153, DOT No. 754896L) Santa Inez Avenue (CPUC No. 105E-17.30-B, SM-1154, DOT No. 754897T), Monte Diablo Avenue (CPUC No. 105E-17.40-B, SM-1155, DOT No. 754898A) Tilton Avenue (CPUC No. 105E-17.50-B, SM-1069, DOT No. 754899G). These rail bridges have been struck by vehicles passing beneath the structures, disrupting freight and passenger rail service. The project will raise the elevation of the tracks, enabling the Poplar Avenue and Santa Inez Avenue crossings to meet the GO 26-D vertical clearance requirement. San Mateo County Transit District (Caltrain) will raise the minimum vertical clearance at the Monte Diablo Avenue crossing from 11 feet – 1 inch to 13 feet – 2 inches. Caltrain will raise the minimum vertical clearance at the Tilton Avenue crossing from 8 feet – 6 inches to 8 feet – 7 inches. The impaired clearances at the two structures is well marked for motorists in advance of the underpasses, and the increased clearances will reduce the potential for further contact between vehicles and the bridge structures. Caltrain operates 92 passenger trains per day at the crossings with a maximum speed limit of 79 MPH. Union Pacific Railroad (UPRR) operates approximately 4 freight trains per day at the crossings with a maximum speed limit of 50 MPH. Section 12.1 of GO 26-D requires a minimum vertical clearance of 15 feet for public roadways crossing beneath railroad tracks.
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