Threave Bridge
| Threave Bridge | |||||
| Location Map ( geo) | |||||
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| County | |||||
| Kirkcudbrightshire | |||||
| Highway Authority | |||||
| Transport Scotland | |||||
| Opening Date | |||||
| 1825, 1987 | |||||
| Additional Information | |||||
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| On road(s) | |||||
| A75 | |||||
Threave Bridge was built in 1825 in order to realign the Carlisle to Portpatrick road away from the tight dogleg over the Bridge of Dee. It consists of three stone arches over the river, the two piers both founded in the river bed and protected by semi-circular cutwaters. The bridge has been attributed to various people over the years, including Thomas Telford. However, while it certainly bears a resemblance to many of his designs, the attribution cannot be confirmed.
The central arch of the bridge is larger than the two flanking arches, which originally gave it a slightly humped profile. However, in 1986/7, the bridge was doubled in width to better cope with the substantial increase in traffic on the A75. The old facing stonework was taken down on the downstream side and a new concrete section, matching the original arch profiles, was constructed. At the same time, however, the roadway was raised slightly to remove the hump, and so the reconstructed stonework differs slightly from the original as the string course and parapets are now horizontal. The parapet on the upstream side was also rebuilt to be horizontal.
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