(Bloomberg) -- Amtrak restored regular train service onMonday in the Northeast U.S., after disruptions from a crash thatkilled two railroad workers near Philadelphia on the nation’sbusiest passenger-rail corridor.

Backhoe on tracks

A train from New York to Savannah, Georgia, struck constructionequipment on the tracks Sunday morning south of Philadelphia,forcing Amtrak to suspend operations between the city andWilmington, Delaware. By the afternoon, the carrier resumed runningsome trains on the route as the U.S.National Transportation Safety Board dispatched a team to thescene. Regular service will resume Monday with some delays betweenPhiladelphia and Wilmington, the railroad said on Twitter.

There were about 30 injuries, none life threatening, among the341 passengers on Train 89, Amtrak spokesman Mike Tolbert said inan e-mail. The dead were the operator of an Amtrak backhoe and hissupervisor, according to the office of Senator Charles Schumer ofNew York, who was briefed on the crash.

Most heavily traveled stretch of tracks

Amtrak’s Northeast Corridor runs between Washington and Boston, andis the most heavily traveled stretch of tracks for the U.S.passenger railroad. Sunday’s accident in Chester, Pennsylvania,marked at least Amtrak’s second near Philadelphia in less than ayear, after a derailment there in May killed eightpassengers and injured dozens.

The main engine in Sunday’s crash skipped the tracks afterslamming into the backhoe, Amtrak said. Railroad accidentsinvolving work crews have been a worsening problem in recent yearsand prompted the NTSB to issue a special report in 2014.

Related: Amtrak transfers $275 million risk in first CATbond for railway

Copyright 2018 Bloomberg. All rightsreserved. This material may not be published, broadcast, rewritten,or redistributed.