The building, now known as the Cahokia Courthouse, traces its ancestry back to a French-Canadian log cabin built by one of these settlers about 1740.
|French colonial building style "Poteaux-sur-solle."|
The American frontiersmen invested a substantial amount of their very limited resources to set up a legal infrastructure of local self-government. On April 27, 1790, St. Clair County, Illinois, the first county located within the Illinois region of the Northwest Territory, was organized. Soon afterwards, the 1740 Cahokia house, an unusually well-built structure, was promoted to the status of a courthouse for the new county. In 1804 the federal government opened its first Illinois land office, in Kaskaskia, to sell former Native American land to settlers. Soon the population of St. Clair County grew far too large for the small log cabin to be adequate as a courthouse.
From December 1803 until the spring of 1804, Lewis and Clark used the Old Cahokia Courthouse as a headquarters for collecting information, meeting with territorial leaders, gathering supplies and corresponding with President Thomas Jefferson while the party camped at nearby Camp River Dubois.
In 1904, promoters for the St. Louis World's Fair discovered the old Cahokia courthouse, which by this time had become one of the oldest surviving buildings in Illinois. They bought it, dismantled it, and carried the surviving posts and other wooden pieces across the river to St. Louis for rebuilding as a fair attraction.
The courthouse appears to have survived this experience and to have excited interest from Illinoisans. At the end of the fair, the cabin was again dismantled, this time for a 1906 rebuilding in Jackson Park in Chicago.
Cahokia residents resented the fact that their oldest building had been moved to the opposite end of the state and began in the late 1920s to lobby for return of the historic courthouse. This lead the state to purchase the building and the land on which it was originally located. The remaining original fabric was returned to Cahokia and incorporated into the building that was constructed back on the original courthouse foundation.
By this time, however, very little of the 1740 cabin remained. Each act of dismantling and reconstruction had replaced much of the original wood with new timbers. The third reconstruction was mostly a new building. The state of Illinois stated that the rebuilt Cahokia courthouse contained some pieces of timber from the original structure.
|Cahokia Courthouse interior.|
Cahokia Courthouse State Historic Site