CROSS COUNTY, Ark. — A highway bridge in Cross County, Arkansas that had been closed since last fall for structural concerns collapsed on Friday, the Arkansas Department of Transportation said.

while the Big Creek crayfish prefers pools and backwater areas. Both crayfish are imperiled by the non-native woodland crayfish, which can displace the native crayfish as well as interbreed with them.

the U.S. Fish and Wildlife Service today protected the Big Creek and St. Francis River crayfish as threatened under the Endangered Species Act. The Service also designated 2,112 river miles of ...