Stone Arch Bridges

Category: Construction

  • Hinges

    Hinges and the Arch

    Hinges are a part of how an arch collapses. In this post we investigate hinges, how they can be formed, and the ramifications for a stone arch bridge.

  • Stones inserted into to the arch joints

    The Challenge of Small Arches

    Small stone arch bridges present some unique building challenges by virtue of their small size. In some ways they are more difficult to build and less efficient in their use of material than larger arches.

  • Stone Culvert Near Town of Oak Valley

    Deciding Where to Build a Stone Bridge

    Some locations are more ideal for building a stone bridge than others. In this post, we look at what sort of stream characteristics are ideally suited for easy stone bridge construction.

  • Model Roman arch

    The Thrust of the Roman Arch

    The Roman arch has many subtle peculiarities, which in turn make it a good choice for bridge design. In this post we delve in depth into the properties of the Roman arch.

  • Oak Valley culvert (10)

    Abutment Design Theory

    Designing a stable abutment for a stone arch bridge requires that the abutment be thick enough that the thrust line of the arch be safely contained within the thickness of the abutment.

  • Loaded Paver Arch With Backing

    Backing: A Continuation of the Abutment

    Backing is used to provide resistance to the thrust of the arch of a stone arch bridge. In this post, we investigate good practice and using the backing, and demonstrate how it helps to significantly strengthen the arch.

  • SE Satchell Creek Road Rock Creek Bridge

    Mortaring and Cold Weather

    Mortaring becomes dicey during cold weather, as freezes can destroy the integrity of the mortar, making it little better than chalk in properties. Here are some tips to extend the building season without risking mortar freezes.

  • SW 90th Culvert

    Stone Bridge Designs to Prevent Scour

    There are several ways to design a stone arch bridge to help prevent scour down the road. The correct foundation design and an adequate span are key to long-term stability.

  • Tucking grout into arch joints

    Grouting a Rubble Arch

    Grouting a rubble arch is an important part of building a stone arch bridge with rubble masonry. In this post we investigate the process used to fill in the gaps in the joints of the arch.