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Potter Road over Conway Lake
Eaton, New Hampshire |
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The
bridge was a structurally deficient structure and listed on the NHDOT
Redlist.
Services Provided:
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Engineering Study |
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Cultural Resources Coordination |
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Preliminary & Final Design |
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Permit Application Preparation
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Construction Contract Administration |
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Construction Observation/Engineering
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Goals:
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HL-93 Live Load Capacity |
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Single lane, low maintenance structure |
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Unique Features:
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Utilized timber bridge and approach rail which allowed the
replacement structure to blend into the woodland environment of
the site
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Improved severe “S” curve alignment over the bridge
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Poor soil conditions required cofferdams and deep excavation to
remove and replace poor soil strata with structural fill
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Project Highlights:
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New superstructure consisted of five 21” deep prestressed
concrete deck beams, cast-in-place concrete overlay, asphalt
wearing surface, cast-in-place concrete brush curbs, and timber
bridge railings |
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New substructure consisted of cast-in-place concrete cantilever
abutments and wingwalls |
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NHDOT Municipal Bridge Aid Program Project |
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© 2010 Hoyle, Tanner & Associates, Inc.
All Rights Reserved |