Accessibility Information

at Washington State Park

Accessible SymbolThis symbol indicates that the specified area is fully compliant with Americans with Disabilities Act Accessibility Guidelines (ADAAG).

Park Office

Parking for the office is located near the interpretive center and parallel to the sidewalk. The path is uneven flagstone and has a step. Being a historic structure built by the Civilian Conservation Corps, the office has not been modified. Park information and assistance can also be found April through October at Thunderbird Lodge (operated by the park concessionaire) and in the campground with the campground host. 

Interpretive Center/Small Petroglyph Site

Parallel parking is adjacent to a flagstone sidewalk. The entrance to the interpretive center has mostly level flagstone and a 34-inch-wide doorway. Floor level is 2 inches lower than the threshold. Inside, you’ll find a mostly level flagstone floor and interpretive exhibits. A flagstone path leads past the interpretive center to a petroglyph site. Here, a railed wooden observation deck is provided. An 8-inch step is encountered at the deck. 

Across the road from the interpretive center is a Korean War memorial, which has a paved pull-off area and is accessible to all visitors.

Accessible SymbolPicnic Areas

Two accessible picnic sites are provided. The first one is found at the swimming pool picnic area. It includes a signed parking space, paved pathway, extended-end table and pedestal grill.

The second site is adjacent to the Thunderbird Lodge parking lot. Here you’ll find a shady site with a signed parking space, paved pathway, extended-end table and a pedestal grill.


  • The wooded campground offers one basic and two electric accessible campsites, which provide a fire ring, an extended-end table, a lantern post and a pedestal grill. Accessible vault toilets and water hydrants are found in both loops.
  • The main showerhouse has one accessible parking space located to the right as you pull in. A paved pathway leads to the entrances. Inside, you’ll find roll-in showers with grab bars and a seat and front-transfer toilets. The lavatories can be rolled under. Electric outlets may be difficult for some users to reach. 
  • The laundry has two sets of top-operated machines with long sorting tables provided. The average maneuvering width is 3 feet. The breezeway contains an information board.
  • Near the main showerhouse is an accessible playground with a wood chip pathway.
  • The amphitheater, located just down from the playground, has a paved pathway leading to a seating area with room for wheelchairs. Unmarked parking is along the road. 
  • The dump station has not been modified. 

Special-Use Area

This area has a gravel parking lot and is mostly level to a slight slope of 3%. Tables and fire rings are provided on natural turf. The water fountain, hydrant and vault toilet are not modified for accessibility.

Accessible SymbolThunderbird Lodge Store

This historic structure offers four accessible parking spaces with a paved path to the entrance. A spacious interior houses an accessible restroom and the park store, which is operated by the park concessionaire. Cabin, watercraft and swimming pool rentals, as well as limited park information, are available here.

Accessible SymbolCabins

Cabin 10

This cabin has paved parking with a very slight slope and a pathway to the patio entrance. The patio offers an extended-end table and a pedestal grill. The door has a lever-style handle and opens into a large living area and accessible kitchen. Overhead cabinets may be out of reach for some users. Wide doorways open into bedrooms that provide lowered shelves and closet rods. The bath has an accessible lavatory with lowered mirror, lowered towel shelves, a side-transfer toilet and a tub/shower with grab bars and a removable shower seat. The showerhead is adjustable.

Big River Day-Use Area

The picnic sites have not been modified at this time. The vault toilets in this area are accessible. Access to the Big River is not ADA accessible at this location.

Accessible SymbolBig River Shelter House

The shelter has level, paved parking with one signed space. A paved pathway leads past an accessible water fountain to the entrance. This shelter provides an extended-end table, a group grill and seating for 96 people. An accessible playground is located nearby with a paved pathway and a seating area. Also, an additional signed parking space offers easy entry to the accessible vault toilet.

CCC Shelter House

This historic shelter has level, paved parking with a fine gravel and dirt path to the structure. Here, you’ll encounter a 12-inch step up into the flagstone-floored building. There have been no modifications done to this structure. Seating accommodates 84 people and includes a group grill and a fireplace. The vault toilet is not accessible. 

Accessible SymbolSwimming Pool

Level, paved parking is provided with a wide pathway to the change house. Wide hallways allow easy access to the pool deck and change rooms. Side-transfer toilets, lowered mirrors and clothes hooks, accessible lavatories and roll-in showers are provided. An accessible water fountain is available in the breezeway. A shaded deck area is located near the concession area. Accessible seating is available. The pool is accessible via a paved ramp with a downward slope of approximately 10%. The concession stand has not been modified.

Nearby, a picnic area provides two signed spaces with an accessible picnic site. The playground and water fountain have not been modified. Restrooms are located near the playground and have a roll-under lavatory and a side-transfer toilet.

Accessible SymbolPetroglyph Interpretive Shelter

Plenty of level, unmarked parking is available. A level pathway leads through the information kiosk and under the shelter, which provides overhanging interpretive panels. 

Big River Valley Gazebo Overlook

This area offers level parking but otherwise is not modified.

Boat Launch

The boat launch, maintained jointly with the Department of Conservation, has an ADA accessible pad that allows wheelchairs direct access to a boat preparing to launch.


Due to topography, trails have not been modified.

For more information, contact the park:

Washington State Park
13041 State Highway 104
De Soto, MO 63020-7000
1-800-379-2419 TDD

Last updated: April 2023