Work to repair a water main on Sheridan Boulevard has the busy thoroughfare shut down between West 41st and West 44th avenues.
Denver Water believes the break in a 12-inch diameter line happened early Monday morning.
The break cut water service to 21 homes along Sheridan. Water has since been restored.
There's no word yet on what caused the break and when repairs will be completed. That stretch of road is expected to reopen by 11 p.m. Monday.