A segment of a 48-inch sewer main on Iron Horse Golf Course is being replaced. Part of the course is in Haltom City but most of the work will take place in North Richland Hills. The project is in an area bound by Hwy. 377 to the west, Big Fossil Creek and Skylark Circle to the east, Loop 820 to the north and Starlight Drive and Riviera Drive to the south.