Abutment Designs by Excel Bridge
Conditions:
Excel Bridge only designs abutments for Excel bridges.
Small bridge abutments may be designed by assuming 1,500 psf soil conditions, but you may save significant money by getting a soil report. Larger bridges (i.e. greater than 1,000 square feet) require a report from a geotechnical company.
Assumptions:
The same design will be used for both ends of the bridge.
Abutment design ordered at the same time and on the same drawings as the bridge or the cost will be higher.
Responsibility of others:
Provide all load conditions except dead load.
All materials and construction.
Providing soil test data.
Materials required:
Concrete shall develop 3k psi compressive strength in 28 days & shall contain 5% entrapped air.
Reinforcing bars shall conform to ASTM A615-Grade 60.
Description:
The following is typical only, and is only intended to help you roughly estimate your construction cost. This design is placed on undisturbed soil and uses #5 bar. Excel’s engineer will specify drilled-in anchors for your convenience when possible.
Plan view dimensions: Total length is usually 2′ to 4′ longer than the bridge deck width. The bearing shelf is typically 16″ to 18″ and
the stem wall is usually 8″ wide or more. Footer is usually same length as the wall and two or three times the wall width.
Elevation view dimensions: Footer usually 1″ high, wall is tall enough to reach below the frost line and to undisturbed bearing soil.
The drawings below are only examples and your abutment design may vary considerably:
