Lewis and Clark State Historic Site

Lewis and Clark State Historic Site
A Confluence Greenway Attraction

Main Partner
Illinois Historic Preservation Agency

#1 Lewis & Clark Trail
Hartford IL 62048

(By car) Three miles north of I-270 on Illinois Route 3. Turn left (west) at the first stoplight (New Poag Road).

(By bike) On the Confluence Trail, which runs north from Granite City to Alton (see Trail description on this website).

Wednesday through Sunday 9:00 am – 5:00 pm


(618) 251-5811

History and Features
On December 12, 1803 William Clark and his men entered the River Dubois near the present city of Hartford IL and pulled up on the southern bank. The river’s mouth made a good harbor for boats, and its location was quite near the mouth of the Missouri River, the route chosen for the Corps of Discovery expedition. Clark chose this spot for the group’s winter camp.

Today, the Lewis and Clark State Historic Site – the first official site on the National Lewis and Clark Trail – includes an Interpretive Center, a replica of Camp DuBois and the Corps of Discovery Monument. The Interpretive Center, focused on the story of Lewis and Clark in Illinois, contains a 55-foot full-scale model of the expedition’s keel boat. Constructed by hand, the boat’s mast is 30 feet high. One side of the boat is cut away to show how provisions were packed for the journey. A 12-minute film immerses visitors in the preparations and challenges facing the expedition. The nearby Monument is a circular memorial that chronicles Lewis and Clark’s passage through the 11 states comprising their route. This historic site has a spectacular view of the confluence of the Mississippi and Missouri Rivers.

For more information about the Lewis and Clark State Historic Site, see