Louisiana Purchase

To see the granite monument that marks the site at which all parts of the Louisiana Purchase states west of the Mississippi would subsequently be measured, you'll walk along an elevated boardwalk above the headwater swamp.

Length: 0.20 miles
Loop Trail? No
Allowed Uses: Agency: State
Entry Fee? No
Parking Fee? No

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Location: Brinkley, At Louisiana Purchase State Park on US 49 NW of Helena.
States: Arkansas
Counties: Lee, Monroe and Phillips
Latitude: 34.64567   Longitude: -91.05391

Louisiana Purchase State Park is located south of Brinkley. From I-40 at Brinkley, take U.S. 49 and travel 21 miles south, then go two miles east on Ark. 362 to the park.


This National Historic Landmark preserves the initial point from which all surveys of the property acquired through the Louisiana Purchase of 1803 initiated. To see the granite monument that marks the site of the initial point, you'll walk along an elevated boardwalk above the headwater swamp in which the monument is located.

Additional Details

Primary Surface: Boardwalk
Secondary Surface: None
Average Grade: 0%
Elevation Low Point: Not Available
Elevation High Point: Not Available
Year Designated: 1981

Contact Information

For more information and current conditions, contact the trail manager (listed below). For questions, suggestions, and corrections to information listed on the website, contact American Trails.

Trail Management:
Arkansas State Parks
Hwy 362
Brinkley , AR 72049
(888) 287-2757



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