Amtrak and NJ Transit have agreed to make a joint investment of $31m to refurbish railroad infrastructure along the Northeast Corridor (NEC) in New Jersey, US.

The investment builds on the existing partnership between the two entities, which was announced in February, to facilitate infrastructure improvement works and better passenger experience.

Amtrak board chairman Tony Coscia said: “We are proud to continue our strong and cooperative relationship with NJ TRANSIT. Together, we are improving our shared infrastructure, the safety of the railroad, and our customer experience through projects of every size, from basic track work up to the Gateway Program.”

The latest move encompasses various projects across New Jersey, including upgrade works at the Newark Penn Station, where a total of 95ft of wooden ties on track 1 and 1,100ft of wooden ties on track 4 will be replaced with concrete ties.

With the investment, the NJ High-Speed Rail Program will also work to complete catenary upgrades to increase capacity and reliability.

The scope of works under this programme includes equipment replacement and installation of constant tension catenary on four tracks.

Additionally, it includes improving Portal Bridge conditions by overhauling tracks two and three by replacing dilapidated timber decks.

Amtrak will carry out extensive timber and switch replacement work at Fair Interlocking in Trenton.

New Jersey Governor Phil Murphy said: “The bridges and rails that cross New Jersey serve as a lifeline for our state’s economy, and the Northeast Corridor is an indispensable branch.

“I’m proud to stand beside Amtrak and NJ Transit as they work together to keep our infrastructure in good repair and serve as much-needed partners as we work to keep our region’s economy at full strength, ensuring that New Jersey moves in the right direction.”