If you happen to be thinking of demolishing the road bridge in Athlone at any time, please try to remove the foundation stone carefully, without breaking it, and look for a cavity.
Mr Rhodes, the principal Engineer of the River Shannon Improvement Works, having paid a visit of inspection to the bridge works of Athlone; a copperplate, with an inscription thereon, was deposited in a cavity in the foundation stone, which was laid on the 6th instant. The site on which the new bridge is to be erected is 70 yards up the river from the present bridge. The new bridge is to consist of three elliptical stone arches, each of 60 feet span, and 14 feet rise, and one iron swivel arch of 40 feet, to admit the passage of steam vessels of a large class.
The Galway Vindicator and Connaught Advertiser 27 November 1841
If you find the copperplate, do please tell us what the inscription says.