MCCOOK, Neb. (AP) – A Colorado company is the apparent low bidder for repairs to the Red Willow Dam north of McCook, Neb. SEMA Construction of Centennial, Colo., submitted a bid of $15.3 million to repair cracks found in the dam embankment in October 2009. The McCook Daily Gazette reports that the company’s bid was slightly higher than the government estimated but $2 million less than the closest bid. Gerri Voto-Braun, a contracting officer for the U.S. Bureau of Reclamation, says she will work with the Colorado company to ensure it’s a responsible bid. The bureau also must approve SEMA’s sub-contracting plans before awarding the bid. Officials say work on the dam about 10 miles north of McCook will take about two years.