One lane of T-15 slated to be reopened Feb. 14

Feb 06, 2015

One lane of T-15 slated to be reopened Feb. 14

Highway T-15 is expected to be reopened to one lane of traffic beginning Saturday, Feb. 14, according to officials involved in the construction of a hydroelectric project at the site of the Red Rock Dam.

“We know that the closure of T-15 is a significant inconvenience to local commuters” said Joni Livingston, director of Member Services and Communications for Missouri River Energy Services (MRES), the wholesale electric utility that is building the project. “The construction crews are working as hard as they can to get T-15 reopened as soon as possible while maintaining safety for the workforce and drivers.”

MRES reports that work is nearly completed on a concrete wall that is being built under Highway T-15 to ensure the stability of the dam during construction of the Red Rock Hydroelectric Project. The road is now being repaired and the guardrail replaced so that the highway can reopen to traffic.

Once the road is reopened, there will continue to be intermittent short-duration closures as workers move large rebar cages to the construction site. Those rebar cages will serve as the internal structure of an earth retaining wall on the upstream face of the dam. The retaining wall will be located adjacent to and upstream of the water intake structure for the hydroelectric project’s powerhouse and will allow water to be channeled into the intake structure.

The intermittent road closures will occur between 11 p.m. and 6 a.m. every three or four days until work on the retaining wall is completed. There also will be times during that wall’s construction when traffic on the road will be limited to a single lane. “Completion of that wall depends on many factors including weather and Lake Red Rock water levels and inflows,” Livingston said. “Because of that, we can’t predict how long the work will take, but we will make every effort to keep people up to date as it progresses.”

Throughout the project’s construction period, a 35-mile-per-hour speed limit will be imposed on the section of T-15 near and across Red Rock Dam.

For more information about the Red Rock Hydroelectric Project, visit the project website at