DURANGO, Colo. -- A new fire erupted Tuesday afternoon just west of the massive blaze near Durango, forcing more families to evacuate.

The new fire is called the Valley Fire, and it has burned about 400 acres and destroyed six structures just west of the Missionary Ridge Fire.

Federal officials say the blaze forced the evacuation of about 240 homes when it flared up Tuesday afternoon.

Firefighters have a bulldozer line around the perimeter of the blaze, but they're not confident it will be able to stop it.

The fire is less than two miles from the northern edge of Durango and edging slowly southward. The main road out of Durango to the north, U.S. 550, has been shut down.

The Falls Creek Ranch and High Meadows Ranch subdivisions were evacuated as are homes along County Road 203 from Trumbell Lane to the 4500 block area.

Pre-evacuation alerts were advised from Trumbell Lane to the 7200 block area.

Authorities say the blaze appears to be unrelated to the larger Missionary Ridge Fire.

The Federal Emergency Management Agency has authorized funds to fight this latest fire. It's the 14th Colorado wildfire to qualify for FEMA fire management assistance this year.

Missionary Ridge Fire Still Burning Out Of Control

The Missionary Ridge Fire has so far burned more than 67,000 acres, destroyed 45 homes and is 30 percent contained.

It continues to burn out of control in the same area -- less than two miles from Durango city limits.

Tuesday's hot weather and shifting winds hampered firefighting efforts to get control of the blaze.

Nearly 1,200 homes have been evacuated. The cost to fight the fire so far is ust under $14 million.

La Plata officials released a partial list of the homes that the Missionary Ridge Fire destroyed late Monday.

The other addresses have not been released pending notification of the families.

Aspen Trails
-600 Aspen Drive
-992 Aspen Drive
-13764 Florida Road (County Road 240)
-73 Chipmunk Circle

Animas Valley
-8191 East Animas Road (County Road 250)
-8405 East Animas Road
-8620 East Animas Road
-8670 - East Animas Road
-8682 East Animas Road
-10295 E. Evans Ave. No. 121
-8956 East Animas Road
-8960 East Animas Road
-9010 East Animas Road
-9065 East Animas Road

Lake Vista
-191 Lake Vista
-56 Lake Vista
-759 Lake View Drive
-20 Yuma Drive

Vallecito
-640 Lake View Drive
-777 Park Drive
-99 Park Drive
-175 Park Drive
-191 Lake Vista Drive
-102 Park Drive
-191 Lake Vista Drive
-56 Lake Vista Drive
-14443 Vallecito Road (County Road 501)
-14483 Vallecito Road
-13467 Vallecito Road
-17485 Vallecito Road
-17477 Vallecito Road
-90 Lake View Drive
-426 Los Pinos Drive
-2044 County Road 501-A
-17481 Vallecito Road