Construction and description Cogan House Covered Bridge

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interior view of burr arch , timber framing; red metal framework beyond west entrance prevents vehicles larger posted limits entering.


landis not if bridge built in 1877 or 1878, every other source mentions date agrees 1877. valentine ( tine ) meyers (or meyer), millwright , resident of hamlet of quiggleville in lycoming township, built bridge. timbers bridge cut @ , down , steam powered sawmill owned robert wood, short distance north of bridge site. head sawyer @ mill john mecum. wood used pine, cut in nearby forests , hauled in ox carts mill. largest timbers used in bridge 16 feet (4.9 m) long.


meyers not believed have had experience building bridges , set construction in unique manner. timber framework first assembled in field next sawmill, each new piece bolted place after being cut. if piece did not fit, more careful measurements made , new piece cut , tested. outlines of sections curved beams burr arch first marked chalk on wood, saw crew lifted , guided hand against sawblade cut curve. after framework completed in field, taken apart, loaded onto same ox carts used bring logs mill, , taken bridge site. there framework reassembled on bridge abutments. bolts used hold of large pieces together, while cross-pieces , small braces nailed in place.



underside of bridge looking west


the cogan house covered bridge added nrhp in 1980 , listed on 2009 national bridge inventory (nbi). according nbi, covered bridge 94 feet 2 inches (28.7 m) long, roadway 14 feet 5 inches (4.4 m) wide, , maximum load of 7.2 short tons (6.5 t). according nrhp, bridge s road surface width 19 feet 7 inches (6.0 m), load 4.0 short tons (3.6 t), , clearance height 10 feet 6 inches (3.2 m). width sufficient single lane of traffic. of 2011, clearance height posted on bridge has been reduced 8 feet 6 inches (2.6 m), , posted maximum load has been reduced 3.0 short tons (2.7 t). according landis, top of burr arch 11 feet (3.4 m) above floor of bridge.


the covered bridge rests on original stone abutments, have since been reinforced concrete made of cement. bridge deck made of crosswise planking, overlaid runners in western half , lengthwise planking in eastern half. upper part of portals , clapboard siding made of pine boards, , stops 3 feet (0.9 m) below roof line. although bridge painted red part of 1998 restoration, in 1964 described unpainted, , not seem have been painted in 1980, nrhp nomination form describes how rough horizontal siding ... help[s] small bridge blend surrounding forest . roof covered wooden shingles. bridge not have parapets , has no steel reinforcements .









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