You can now read 10 articles in a month for free on BostonGlobe.com. Read as much as you want anywhere and anytime for just 99¢.

The Boston Globe

Nation

Oil spill closes Miss. River for third day

VICKSBURG, Miss. — The Coast Guard said Tuesday that about 7,000 gallons of crude oil were unaccounted for aboard a leaking barge that had rammed a railroad bridge near Vicksburg on the Mississippi River, which remained closed for a third day as crews slowly pumped out oil.

Petty Officer Third Class Jonathan Lally said it is not clear that all of the 7,000 gallons leaked into the river. Some of it, he said, could have seeped into spaces inside the barge.

Continue reading below

Lally said a plan to pump oil from the stricken barge onto another barge — a process known as lightering — had been approved but it was unclear how long that would take or when the river might reopen to vessels. He said the other barge was en route.

Environmental impact, Lally said, has been minimal because a boom is containing the leak around the barge and the leak is slow.

The economic impact is another matter.

At least 54 vessels, including towboats and barges, were idled Tuesday on the closed 16-mile stretch of one of the nation’s vital commerce routes.

Vessel traffic tends to be less in January than during peak harvest season, when grain from the US heartland is shipped south to be loaded onto ships near New Orleans.

‘‘The Coast Guard advised our hazardous materials unit that the river would be closed indefinitely to all traffic,’’ Lieutenant Julie Lewis of the Louisiana State Police said.

You have reached the limit of 10 free articles in a month

Stay informed with unlimited access to Boston’s trusted news source.

  • High-quality journalism from the region’s largest newsroom
  • Convenient access across all of your devices
  • Today’s Headlines daily newsletter
  • Subscriber-only access to exclusive offers, events, contests, eBooks, and more
  • Less than 25¢ a week