Hoyle, Tanner & Associates, Inc.

Swiftwater Covered Bridge (Built in 1849)

Bath, New Hampshire

The Swiftwater Covered Bridge was rehabilitated due to severe rot throughout the bridge.

Services Provided:

	Inspection
	Rehabilitative Design
	Bidding Administration
	Construction Administration/Observation

Goals:

	H6 (6 Ton) load capacity
	Retain existing members

Unique Factors:

This is the oldest remaining Paddleford truss covered bridge in the world

Project Highlights:

	Paddleford Trusses
	NHDOT Municipal Bridge Aid Program Project
	Existing structure is the fourth to be built on this site, the original having been built in 1810.
	Hoyle, Tanner & Associates, Inc. personnel presented a paper on this project at the ASCE Structures Congress in Washington, D.C.
	The floor and roof framing was undersized for modern loadings. Both were strengthened by retaining existing members and augmenting with new