California Construction News staff writer
The California High-Speed Rail Authority marked a major milestone in the Central Valley this week with the completion of the Road 26 grade separation project in Madera County, the 60th major structure finished within the first 119 miles of active high-speed rail construction.
The newly completed overpass, located between Club Drive and Avenue 18 1/2 north of Madera, is expected to improve safety and traffic flow by allowing vehicles and pedestrians to cross above existing BNSF railway lines and future high-speed rail tracks. Officials say the project will eliminate dangerous at-grade rail crossings that previously posed risks to motorists and nearby residents, including students attending an elementary school less than a mile away.
According to the Authority, grade separations in Madera County are projected to generate approximately $127 million in public safety benefits over the next 30 years. Local transportation data estimates the improvements could prevent 617 crashes involving fatalities, injuries, or property damage while completely eliminating train-vehicle conflicts at the crossing.
The three-lane Road 26 structure stretches 636 feet long and 68 feet wide. Construction required more than 6,500 cubic yards of concrete, over 1.17 million pounds of steel, nearly 90,000 cubic yards of embankment material, and 49 pre-cast concrete girders.
“We are delighted that the Road 26 grade separation project has been completed and is open to the public,” said Madera County Supervisor Robert Poythress. “The overpass improves safety and eliminates delays caused by the Gold Runner Amtrak operation, as well as future high-speed rail trains.
“I appreciate the communication that the County of Madera has had with the Authority’s management and their commitment to ensuring that the overpass was safe and stable before opening to traffic.”
The Road 26 overpass is one of several completed rail separation projects in Madera County. The Authority completed the Avenue 17 grade separation last year, while additional completed structures can be found on Avenues 12, 15, and 15 1/2, as well as along State Route 99 between Avenue 7 and Avenue 11.
Construction on the high-speed rail system continues across the Central Valley, where 171 miles are currently under design and construction between Merced and Bakersfield. Officials report that more than 80 miles of guideway have already been completed, with 30 additional major structures now under construction in Madera, Fresno, Kings, and Tulare counties.
Statewide, 463 of the planned 494 miles connecting San Francisco to Los Angeles and Anaheim have now received full environmental clearance and are ready for construction.
Since work began, the project has created nearly 19,200 jobs, most of them filled by Central Valley residents, while generating nearly $25 billion in economic activity across California. Up to 1,700 workers are currently active at construction sites each day.
