Hoyle, Tanner & Associates, Inc.

Thompson Covered Bridge - Scour Countermeasures (Built in 1832)

Swanzey, New Hampshire

Removal of a dam immediately downstream of the bridge prompted the need for scour countermeasures for the bridge substructure.

Services Provided:

	Engineering Study
	Design Engineering

Goals:

Provide scour protection while maintaining historic integrity

Unique Factors:

Built in 1832 this is one of the oldest surviving covered bridges in the United States

Project Highlights:

	National Historic Covered Bridge Preservation Program Project
	Hoyle, Tanner is leading a multi-disciplinary team for the project
	Scour countermeasures will include steel sheeting at the pier and stone revetments, wires and bars upstream of the bridge