CHEYENNE, Wyo. (AP) — Gov. Matt Mead and top Wyoming lawmakers voted Tuesday to approve a floor plan allocating space in the state Capitol — a key step in a massive renovation project starting this summer.

Special Assistant Attorney General Michael O'Donnell is coordinating the $300-million project that's set to run through 2018.

O'Donnell says plans call for bringing Capitol back to how it looked in about 1920, shortly after its last major addition. The building also will receive new mechanical, fire-suppression and elevator systems. The neighboring Herschler Building will also be refurbished.

Under the new floor plan, the governor as well as the state treasurer, state auditor and secretary of state will have offices on the Capitol rotunda. Several large public meeting rooms will be designated throughout the building.