Helical anchors for bridge abutments
Bridge abutments are a natural place to use our helical anchors and/or geo piles
because the soils often have a high water table that's also deep, making drilled
concrete piers of driven concrete piles difficult to use. In addition, construction
conditions surrounding the water and mud area usually present a problem, especially
during that environmentally unfriendly concrete pour.
Below is a photo sequence of the Winslow Geo Anchor used in the foundation of a
70-foot bridge (H20-44 loading) in Northern California. The span crosses a large
stream, enabling the development of two prime hillside lots previously restricted
due to the inability of transporting materials from one side to the other. 14 anchors
were used in the foundation -- seven on each side -- instead of 20 piers initially
architected. The structure easily met the 37-ton load (enough to support a county
fire engine) requirement, as each anchor alone was tested at 50 tons capability.
The developer liked our work (you can read more in the 'Application Spotlight' section
on the Home Page), and noted the Winslow Geo Anchor saved nearly 50% in materials
and labor. However, it was the Department of Fish and Game who really enjoyed the
fact we had no impact on the stream itself, as the helical anchors were easily installed,
environmentally friendly, and extremely structurally sound -- factors made the code
and review process easy. OK, the owner liked that ease of code review too . . .
Our helical anchors and geo piles provide exceptionally strong bearing capacity
to bridge abutments, towers, and poles in unstable soils. Contact us for further
details, and let us design one for you.
Next Photo Sequence