Hanford Viaduct

The Authority’s largest structure continues to take shape in Kings County. Crews are more than halfway done at placing the 978 pre-cast concrete girders needed for the superstructure. On the north side of the viaduct, ironworkers, carpenters and cement masons are working together to form the deck of the structure. To date, more than 16,000 cubic-yards of concrete has been placed at the Hanford Viaduct. Further south, Lacey Boulevard has been temporarily closed, and State Route 198 has been slightly realigned toward the median to allow crews to begin extending the viaduct over the highway.

To date, 740 pre-cast concrete girders have been installed to form the superstructure of the Hanford Viaduct. Between Grangeville and the San Joaquin Valley Railroad, crews will begin to work on the parapet walls later this spring. Further south on Lacey Boulevard, crews are working on the columns needed to extend the viaduct over the highway. Earlier this spring, crews were seen placing concrete to form columns in the median of the highway. In the coming weeks, crews will work at night to place the first pre-cast concrete girders over the highway. The Hanford Viaduct is the largest high-speed rail structure currently underway spanning 6,330 feet long.

To date, 284 of the 978 pre-cast concrete girders have been placed on the Hanford Viaduct. Ironworkers are working each day to tie rebar for the deck and parapet walls of the structure. Over the last few months, workers have placed concrete for the diaphragms of the structure, which bring the girders set between each span of columns together.

In August, crews began placing pre-cast concrete girders for the superstructure of the Hanford Viaduct. Each wide flange girder ranges in size between 53 to 74-feet long and weighs between 60,000 to 90,000 pounds. As many as 14 girders will be placed between each span of columns, and more than 900 girders will be needed all together. As of Oct. 1, 2022, more than 130 girders have been placed across 15 spans of columns.

At the Hanford Viaduct near Grangeville Boulevard, carpenters are working to erect falsework for the construction of the superstructure. More than 900 pre-cast concrete girders will be needed for the superstructure, all of which will be fabricated at the Dragados-Flatiron Joint Venture Pre-Cast Girder Facility just steps away from the structure. The first girders will be set for the superstructure later this summer.

At the Hanford Viaduct, crews are working on the abutments – the structure that connects the deck of the structure to the ground – at the most northern and southern portions of the structure. Going south, crews are nearly complete erecting 286 columns needed to form the substructure of the viaduct that will connect to the future Kings / Tulare Station. Hanford Viaduct is the largest high-speed rail structure in the Central Valley spanning nearly 6,330 feet long. When complete it will carry high-speed trains over Grangeville Boulevard, San Joaquin Valley Railroad, and State Route 198.

At the northern segment of the Hanford Viaduct near Grangeville Boulevard, crews continue to erect the concrete columns needed to support the top of the structure. Crews continue to work north to south, hoisting the forms for the columns into place toward the middle section of the viaduct before concrete is poured to form the column.

In the middle of the Hanford Viaduct, crews are fine grading the bottom of the bridge footings with rock. Off in the distance, crews continue to work going north, driving concrete piles needed to provide support for the structure.

Work is continuing at the Hanford Viaduct. Near Grangeville Avenue just north of Hanford, contractors have moved to the next phase of the build out by tying rebar and pouring concrete to form the bents of the viaduct. A bent is part of the substructure that provides support for the superstructure. A total of 84 bents are needed for the entire viaduct.

Crews are now pile-driving concrete production piles just north of Lacey Boulevard where the Hanford Viaduct will begin to cross over State route 198. More than 7,000 production piles will be needed for the foundation of the Hanford Viaduct.

Crews are currently pile-driving concrete production piles at the northern portion of the Hanford Viaduct near Grangeville Boulevard. Nearly 7,000 production piles will be needed to provide foundation support for the Hanford Viaduct, which will take high-speed rail trains over Grangeville Boulevard, the San Joaquin Valley Railroad, and State Route 198.