Major construction of two new bridges is causing a traffic alert along the Saw Mill River Parkway.

Work is now underway on a $17.1 million project to replace and build two new bridges. Those bridges will carry the Saw Mill Parkway over Kisco River in Mount Kisco and across Branch Brook into New Castle.

The project unfortunately is going to mean delays and detours along part of the parkway for at least the next seven months. 

In about a week, northbound traffic near Exit 34 will be shifted over to a new lane and over a temporary bridge while the new bridges are built. Drivers can expect lane closures and detours while the construction continues.

The two new bridges will be wider and prevent flooding and road closures when the weather gets bad. New guide and bridge rails plus a concrete median barrier will also be installed as part of the project, which will be completed in two phases.

The second phase switches to the southbound side in July with the entire project to be complete by the end of the year.