Foothill Gold Line engineering documents released

The Foothill Gold Line Construction Authority's board last week approved the advanced conceptual engineering draft documents for the 12.3-mile Foothill Gold Line light-rail project from Glendora to Montclair, Calif.

The documents, which contain more than 700 pages of engineering drawings detailing all elements of the project, are being distributed to corridor cities and key agencies for a 60-day review period, authority officials said in a press release.

The project is estimated to cost $1.2 billion, with the majority of funding expected to come from the Measure M sales tax, which voters will consider Nov. 8. If they approve the measure,  the Foothill Gold Line will be one of the first projects funded by the measure to break ground, authority officials said.

Engineering for the project began in fall 2014.

The Glendora-to-Montclair segment marks the extension's third phase. The second phase, which runs from Pasadena to Azusa, Calif., opened in March.

The project is an extension of the Los Angeles County Metropolitan Transportation Authority's Gold Line light-rail route, which runs from East Los Angeles to Azusa.