Technical Report

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{\large\scshape Meridian Structural Consultants}\\
{\small Civil and Structural Engineering \quad | \quad Portsmouth, UK}\\[0.2em]
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{\Huge\bfseries\color{accent} Load Rating Analysis of the\\[0.25em] Alder Creek Road Bridge}\\[1.2em]
{\large Assessment of Live-Load Capacity under BD 21 Criteria}

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\textbf{Report No.} & MSC-TR-2026-041 \\
\textbf{Revision} & C \\
\textbf{Date} & 15 May 2026 \\
\textbf{Prepared for} & Wexford County Highways Department \\
\textbf{Prepared by} & R. Adeyemi, CEng \\
\textbf{Checked by} & L. Marchetti, CEng \\
\textbf{Status} & Issued for Review \\
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\textbf{\color{accent} Revision History}\\[0.4em]
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\textbf{Rev} & \textbf{Date} & \textbf{Description} & \textbf{Approved} \\
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A & 20 Mar 2026 & Initial draft for internal review & LM \\
B & 14 Apr 2026 & Updated girder section losses from site inspection & LM \\
C & 15 May 2026 & Incorporated client comments, revised load factors & LM \\
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{\small This document is confidential and prepared solely for the named client.
It may not be reproduced without written permission.}

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\section{Introduction}
The Alder Creek Road Bridge is a two-span steel girder bridge built in 1968
carrying a single carriageway over Alder Creek. Wexford County Highways
Department commissioned this assessment after routine inspection identified
section loss in the bottom flanges of both main girders.

\section{Scope}
This report determines the safe live-load capacity of the superstructure,
accounting for measured corrosion losses, and recommends any interim traffic
restrictions. Substructure and hydraulic assessments are outside the scope.

\section{Summary of Findings}
The governing girder retains \SI{87}{\percent} of its original flexural
capacity. The bridge can safely carry vehicles up to \SI{32}{\tonne} gross
weight without restriction. A repainting and monitoring programme is
recommended within 24 months to arrest further section loss.

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