Hello Mudslide, That's a very interesting item you have there- 'specialized', specific use - it looks like the curved segment was either made that way/ or was bent a long time ago. Can you tell if it was made that way? How thick is the item? Might be a part from a hand wagon/ or carriage. What else have you found in the area/ site? More pics might help. Hope someone comes up with an answer.
yelnif