Interpretive Center

at Washington State Park

The interpretive center is located in front of the park office near the north entrance of the park. The building was constructed by the Civilian Conservation Corps in the mid-1930s and houses interpretive displays, which provide a glimpse into the cultural and natural history of the park. The nature center contains informational brochures a guest book.

rustic rock building


Sunrise to sunset, year-round


38.083779, -90.674222

Park Hours

For temporary closures related to weather, stewardship activities and maintenance, visit our Park and Site Status Map.

COVID-19 Temporary Hours

As of Thursday, April 1, concessionaire operations at Thunderbird Lodge will open Friday, Saturday and Sunday through mid-May, when hours will expand to seven days a week. Pool operations will open May 29. Lodging, float trips, watercraft rental and retail by Missouri Park Adventures will continue following all social-distancing guidelines. Face coverings are encouraged and may be required by local order.See for more information.

Park Grounds:

  • 7 a.m. to sunset, year-round.
  • November through March
    The roads to Shelter #1/CCC Ridge, the swimming pool, cabins and the Big River Day-Use Area (including Shelter #2/Big River Day-Use Area Shelter) are closed to vehicles. They are open to foot traffic.

Interpretive Center hours

Sunrise to sunset, year-round

Park Office hours

April through October

  • 9 a.m. to 4 p.m., Monday through Friday
  • Closed Saturday and Sunday

November through March

  • 9 a.m. to 4 p.m., Monday, Tuesday, Thursday and Friday
  • Closed Wednesday, Saturday, Sunday and state holidays

Please note there may be times when the office is closed while staff are working in the park.