Sturgess, J. and Motley, C. (2022). Helland Bridge, Cornwall, Archaeological recording and watching brief. Cornwall Archaeological Unit. https://doi.org/10.5284/1118773. Cite this using datacite

Title
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Title:		 Helland Bridge, Cornwall, Archaeological recording and watching brief
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Series:		 Cornwall Council Historic Environment Service unpublished report series
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Downloads:
cornwall2-509550_217031.pdf (10 MB) : Download
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Biblio Note		 This report was uploaded to the OASIS system by the named Publisher. The report has been transferred into the ADS Library for public access and to facilitate future research.
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DOI
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DOI
https://doi.org/10.5284/1118773
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Publication Type:		 Report (in Series)
Abstract
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Abstract:		 Aims The principal aims of the archaeological work were to create a record of the damaged area of the bridge prior to any repair works, to monitor the dismantling works and create an archaeological record of features/material uncovered, and to create a photographic record following the completion of repairs. The objectives are to: • Obtain an archaeological record of the bridge prior to and following repairs. • To record all archaeological features, layers and finds uncovered during the course of the works. • To identify any artefacts relating to the construction of the bridge. • Store the long-term conservation of the project archive in appropriate conditions. Methods All recording work was undertaken according to Chartered Institute for Archaeologists (CIfA) (CIfA 2020) and Historic England (2016) guidance. Desk–based assessment During the desk-based assessment historical databases and archives were consulted in order to obtain information about the history of the site and the structures and features that were likely to survive. The main sources consulted were as follows: • Cornwall HER • Images of England online listed buildings database • Early maps and photographs (see Section 12.1) • Published histories (see Section 12.2) Fieldwork Prior to dismantling a rapid record of the whole bridge was made with a more detailed record of the damaged area. A measured plan of the granite coping stones on the western side of the bridge was created, so that the coping stones and cramps could be numbered and reset in their original locations as part of the reconstruction. Notes were made along with annotations to the drawings to provide details of both historic development and fabric. A rapid photographic record was made of the damaged walling to record a) the damage, b) extent of rebuild and c) the general lay and style of build in order to guide the reconstruction. The dismantling works were undertaken under archaeological supervision. This included taking down part of the existing parapet and walling below to a level immediately above the keystone of the southernmost arch. Following dismantling, section drawings were created to show the extent of the dismantled area, road surfaces and make-up, and the parapet wall. Colour photographs of all elevations and sections along with architectural details were taken with a digital camera (at a resolution of 10 million pixels or higher). These form the archive. Photograph included a metric scale bar, except where Health and Safety considerations made this impractical. Descriptions of the damaged walling were made in note form and by annotation of drawings to record fabric and construction, phased development through time and architectural details. Following the completion of the rebuilding work, a further photographic record was made. Post-fieldwork All site materials were prepared for long term storage. This included: • Finalisation of measured drawings. • Archiving of drawings, photographs, paperwork and digital files. • Filing of digital colour photographs and limited image editing (eg, composition, lighting) where appropriate. • Creation of an archive report. • Completion of the Historic England OASIS record (online access to archaeological investigations). • Preparation of CAU archive. Cornwall Archaeological Unit was commissioned by Cormac Solutions Ltd to carry out archaeological recording work and supervision prior to, during and following emergency repairs to Helland Bridge, at Hellandbridge near Bodmin located at NGR: SX 06520 71500 (Figs 1 and 2). The bridge is a Grade I Listed Building which dates from the early 15th century (List Entry Number: 1327910) and has long been regarded as an excellent example of medieval bridge building in Cornwall.
Author
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Author:		 Jo Sturgess
Connor Motley
Publisher
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Publisher:		 Cornwall Archaeological Unit
Other Person/Org
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Other Person/Org:		 Cornwall and Scilly HER (OASIS Reviewer)
Year of Publication
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Year of Publication:		 2022
Locations
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Locations:
District: Cornwall
County: Cornwall
Country: England
Parish: St. Mabyn
Grid Reference: 206519, 71499 (Easting, Northing)
Subjects / Periods
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Subjects / Periods:
PHOTOGRAPHIC RECORDING (Event)
WATCHING BRIEF (Event)
Identifiers
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Identifiers:
OASIS Id: cornwall2-509550
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Created Date
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Created Date:		 03 May 2024