A 95-Year-Old Concrete Arch Bridge: From Materials Characterization to Structural Analysis

Area of Science:

• Structural Engineering
• Materials Science
• Heritage Conservation

Background:

• Assessing the structural integrity of aging concrete arch bridges is crucial for public safety and infrastructure longevity.
• The Jagodnik bridge, a 95-year-old concrete arch structure in Poland, required evaluation under current traffic loads.
• Understanding the mechanical properties of historical construction materials is vital for accurate structural assessments.

Observation:

• Mechanical properties of the original concrete and reinforcement were determined through core and bar stub testing.
• Structural analysis was conducted to evaluate the bridge's bearing capacity and serviceability under contemporary traffic demands.
• The effectiveness of implemented structural improvements, including a new deck slab and protective mortar layer, was observed.

Findings:

• The structural analysis validated that the 95-year-old concrete arch bridge meets today's load requirements for bearing capacity and serviceability.
• The implemented structural improvements, comprising a new deck slab and protective mortar, proved effective in enhancing the bridge's performance.
• The study confirmed the successful integration of modern engineering techniques with historical structures.

Implications:

• Combining numerical modeling with laboratory testing provides a viable strategy for preserving valuable, aging infrastructure.
• The successful renovation of the Jagodnik bridge demonstrates a sustainable approach to heritage conservation, preventing demolition.
• This methodology offers significant environmental and economic advantages by extending the service life of existing structures.