Crews work on installing a temporary cofferdam at the Culvert 4A site near South Bay
With traffic from U.S. 27 in the foreground, crews work on installing a temporary cofferdam at the Culvert 4A site near South Bay in December. The cofferdam, which must be robust enough to hold back Lake Okeechobee should it start rising, must be in place before the old culvert can be removed.