Runway damage forced Nepalese authorities to close the main airport Sunday to large aircraft delivering aid to millions of people following the massive earthquake, but U.N. officials said the overall logistics situation was improving, ABC News reported.

The death toll climbed to 7,057, including six foreigners and 45 Nepalese found over the weekend on a popular trekking route, said government administrator Gautam Rimal. The victims included a French national, an Indian, four other foreigners and Nepalese guides, hotel owners, workers and porters.

The main runway was temporarily closed to big planes because of damage. Despite the setback, the U.N. coordinator for Nepal, Jamie McGoldrick, said the bottlenecks in aid delivery were slowly disappearing.

"I think the problem is there, but it's actually diminishing," he said, adding the Nepalese government eased customs and other bureaucratic hurdles on humanitarian aid following complaints from the U.N.

"The government has taken note of some of the concerns that we've expressed to them and they've addressed those both at customs and the actual handling," he said.

Airport congestion was only the latest complication in global efforts to aid people in the wake of the April 25 quake, the impoverished country's biggest and most destructive in eight decades.

People in Nepal — both in remote villages and the capital, Kathmandu — have complained about not seeing any rescue workers or international aid and about a lack of temporary shelters, with many sleeping out in the open because of fears of aftershocks bringing down their damaged homes.

Birendra Shrestha, the manager of Tribhuwan International Airport, located on the outskirts of Kathmandu, said bigger planes were banned because the runway was deteriorating. The runway was built to handle only medium-size jetliners and not the large military and cargo planes that have been flying to the airport since the magnitude-7.8 earthquake struck, he said.

The last week has seen a steady procession of big jets trying to fly in goods and relief workers, as well as a swarm of journalists, but the small airport has parking slots for only nine jets and only one runway.

There have been reports of cracks on the runway and other problems at the only international airport in Nepal and the only one capable of handling jetliners.

One week after the quake, aid has been slow in reaching those who need it most. In many places, it has not come at all.