Transcript for Puerto Rico struggles to get crucial supplies to the areas most in need

Let's get a report from the ground on in Puerto Rico where the situation in many areas is dire as some towns are completely unreachable because bridges and roads. Roads have been washed away ABC's Al express. Takes a look at the struggle to get aid where it is needed most. Alex good morning TO. Hey good morning Paula supplies goods guess those things are arriving here but the big problem is distribution at the longer it takes. The more dangerous it becomes for people. This morning that desperate race to distribute supplies in Puerto Rico far from over. 4600. US troops now on the road to three star general Jeffrey Buchanan leading efforts to help residents. You suffered a tremendous devastation. And we are there what you this recovery is gonna take a very long time. FEMA already distributing more than 700 relief floats including one point three million meals. Some 101000 commercial cargo containers filled with supplies sitting at port the hurdle very few drivers to get them moving. And diesel fuel trickling in slowing down distribution. There's no way that we can move this guy go without drugs and is no way that. The trucks that will this guy go without these. Ten days after the hurricane with gas and generator robberies rising. Residents still struggling to get fuel desperation anything motionless it is about the Bible you don't you don't want somebody gonna watered lawn and they gonna shoot you for gas. So some people Europe told me they've been in line for up to four hours to get gas we wanna see just how many cars are waiting in line we're gonna start here at the front. 123. Four and this is number fifteen here we are car 120. This line just keeps going. And going. And going. We're hard hit rural areas the recovery even tougher. Can borrow these families forced to make a white knuckle trek across water. After a bridge collapsed with only a wire to hold on to. So all together now some 101000 federal military and civilian personnel are now on the ground here. Trying to get help to people Paula stand. I think that's for your party.

This transcript has been automatically generated and may not be 100% accurate.