The Anchorage Water and Wastewater Utility let a $7-million contract last year to install 4,200 linear feet of high-capacity 48-inch-diameter steel spiral water main pipe, in 40-foot joint lengths.

A worker digging a trench at a south-side middle school hit a natural-gas line Friday morning and sparked a fire. The worker was using a trencher about 10:15 a.m. to cut through the asphalt in the ...