Simla Junction is a historic location in Los Altos, California, near the area of present-day Homestead Road and Foothill Expressway. It does not appear on current maps. The name was used for a rail junction on the Peninsular Railroad which ran interurban cars along the San Francisco Bay Area's peninsula until some time in the 1940s. There was a wye junction at the location. The original rail right-of-way moved to accommodate changes to road systems and water mains. Some of the former right-of-way is now Foothill Expressway. A parallel right-of-way south is now Union Pacific (as of 2005).