339, was modified for dual tracks a century later for use in the current light rail system. The York Boulevard bridge over the Arroyo Seco Parkway was built to replace a small wooden toll bridge which was inadequate to support the growing traffic between South Pasadena and Los Angeles.
339, was adapted for dual tracks a century ago to serve in the modern-day light rail network. The York Boulevard bridge over the Arroyo Seco Parkway was constructed to replace a small wooden toll bridge that could no longer cope with the rising traffic between South Pasadena and Los Angeles.