A bridge replacement project on Route 670 has sparked the need for highway and boating work zones.

South Holston Lake in Washington County will be affected.

The project started in the fall and is expected to continue until August 2015.

The Virginia Department of Transportation is discussing the details and traffic changes on Wednesday.

Here are the details:

When: Wednesday, July 23 at 11 a.m.

Who: Marty Halloway, P.E., VDOT Area Construction Engineer responsible for the project; Charlie Stokes, Orders Construction Company, St. Albans, W.Va. (contractor); Virginia Department of Game and Inland Fisheries representative

Where: The Route 670 project office located on the left just before Avens Bridge. Route 670 is located off Green Springs Road and Route 75 in Washington County.