The Bowmansdale bridge was relocated in 1972 a few miles down the picturesque Yellow Breeches creek, separating York and Cumberland Counties in Pennsylvania, to sit on the campus of Messiah College. The bridge is open to both vehicle and pedestrian traffic, and connects the main campus with the college's complex of athletic fields.
By spring of 2011, the bridge's siding and shingle roof had exceeded their service life. FHTC was contracted to provide and install new poplar board-and-batten siding and a new roof of Western Red Cedar shingles, as well as performing a number of minor timber repairs, installing a new lightning suppression system, and upgraded interior lighting and applying a fire-retardant to the timbers, siding, and roof materials.
To reduce maintenance and improve the lifespan of our repairs, we chose to use a natural linseed-oil-based paint for the siding instead of modern synthetic latex paint. This paint is a combination of natural purified and aged linseed oil carrying natural color pigments. The oil soaks into and preserves the wood and binds the pigments so that the paint cannot peel. With minor service, this paint should last many decades.
Click on images below to view at larger size.
Before our start of work -- Peeling paint, deteriorated woodwork, and a failed roof.
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Beginning to raise the temporary support structure for our work platforms.
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Temoprary staging installed for access to east side roof and siding.
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All downstream side roofing and siding removed.
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Roof reinstallation under way.
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Beautiful new 24" Royal Blue Label cedar shingles.
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East side siding painted with one coat of linseed oil and a coat of linseed oil paint -- then installed and brush-painted with another coat of linseed oil paint.
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West roof and siding remover -- Clear view of Burr Arch Truss
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Staging moved to the west side of the bridge, siding and roofing removed, and new shingles in progress.
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New trim to replicate old decorative rake boards.
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West side shingles in progress, showing triple coverage of highest-grade 24" clear cedar shingles.
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Detail of our method of securing temporary work platforms which let us work clear of the protected stream and required no permanant changes to the bridge.
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Roof nearly complete -- new siding in progress.
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Interior view of east truss showing new poplar siding and underside of cedar roof.
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Nearly complete. The richness of the color of the traditional paint is breathtaking.
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The new view seen by passers-by as they approach the bridge on Creekside Drive.
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South Portal End -- Complete
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North Portal End -- Complete
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Completed Bridge Restoration -- View from South East
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Bowmansdale Bridge, Grantham, PA -- Completed Covered Bridge Restoration
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