All roads running through the Valley Forge National Historical Park were closed Tuesday after a sewer main break caused extensive flooding. Some reports estimated the volume of spilled raw sewage to be about 5 million gallons. 
 
 Tredyffrin Township officials said the break appeared to have occurred around 10:30 a.m. in a pipe section of the Valley Creek Trunk Sewer Force Main near the intersection of Routes 252 and 23 in Upper Merion Township. 
 
 The spill drew a multi-agency response that also included contractors and environmental and engineering consultants, according to authorities. Officials said in a release that repairing the main “will require extensive damage assessment and traffic control.” 
 
 An initial radio report indicated about 5 million gallons of raw sewage spilled into the Valley Creek. Neither township nor state officials immediately returned requests for comment Tuesday evening. ||||| Crews in Chester County are working to stop raw sewage from gushing out of a broken pipe into a creek at Valley Forge National Park. (Published Tuesday, Mar 18, 2014) 
 
 Crews worked through the night to repair a broken sewer main that sent 5,000 gallons of sewage per minute into the creek at the Valley Forge National Historical Park. 
 
 The break occurred in the Valley Creek Trunk Sewer Force Main Tuesday morning near the intersection of Routes 252 and 23 in Tredyffrin Township, Chester County, Pa., according to township officials. 
 
 The 30-inch main is shared by Tredyffrin Township, Easttown Township, East Whiteland Township, Malvern Borough and Willistown Township. 
 
 Sewer Leak at Valley Forge Park 
 
 Water gushed onto the roadway at the intersection of Route 252 and Yellow Springs Road in Valley Forge Park causing traffic problems. (Published Tuesday, Mar 18, 2014) 
 
 Park rangers and police said water from the broken sewer main pushed through Route 23 in the park around 11 a.m. Tuesday and spilled off the side of the road. 
 
 Officials say the same main also broke six weeks ago, though they have not yet determined the cause of that break or the most recent one. 
 
 "I don't want to speculate right now," said William Martin, a Tredyffrin Township worker. "We've engaged other consultants to give us a long-term assessment of the pipe." 
 
 Overnight crews removed the pipe. A new pipe is expected to arrive at the scene around 7 a.m. Wednesday. 
 
 "We're working as fast as we can," Martin said. "Really it's a time game to get the pipe back in the ground." 
 
 The following roads that run through the park are closed: 
 
 Route 23 eastbound from Davis Road to Rt. 252 
 
 Route 23 westbound from N. Gulph Road to Rt. 252 
 
 Route 252 is closed northbound from the Pa. Turnpike 
 
 North and South Outer Line Drives 
 
 Gulph Road is closed from Thomas Road to Rt. 23 
 
 Yellow Springs Road is closed at the Covered Bridge 
 
 Public works officials expect these sections of road in the immediate area to be closed for several days as construction crews continue to repair the damaged water main and resurface portions of the street. 
 
 A PennDOT official told NBC10 that the broken main caused thousands of gallons of sewage per minute to leak into the Valley Creek, which feeds into the Schuylkill River. Officials say more than three million gallons of sewage may be in the creek. 
 
 Officials say the sewage leak doesn't pose a threat to humans but could be a safety concern for wildlife in the area. 
 
 NBC10 reached out to the Pa. Department of Environmental Protection asking how the leak could impact the surrounding area and the towns downriver, but officials have not responded to our calls.
– Perhaps today's most disgusting news: A sewer main at Valley Forge National Historic Park broke yesterday, sending 5,000 gallons of sewage per minute into the creek at the Pennsylvania park. Crews worked overnight to repair the 30-inch main, which had also broken six weeks ago, NBC Philadelphia reports. A replacement pipe was expected to arrive this morning. At least 5 million gallons of raw sewage have leaked into Valley Creek, WPVI reports. "All the water goes down into the Schuylkill River and then it goes into Philadelphia in the Delaware River. People get their drinking water out of this and there's the health problem," says one state conservation officer; but NBC Philadelphia says officials insist humans are at no risk from the leak. Wildlife, however, could be. All roads running through the park are currently closed, Philly.com reports; they are expected to remain closed for a few days as crews continue to work in the area.