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Steel grey is the new green.
Your go-to partner for "greener" bridging solutions.

Greener infrastructure solutionsAIL has identified environmental stewardship and commitment to sustainability as part of our company’s strategic plan and our vision for the future. As we have in the past, we will continue to actively examine strategies to advance that vision and our commitment to leadership for our industry.


Our Engineered Solutions deliver environmental benefits in many different ways.

Recycled and recyclable steel

Many of AIL products use a high degree of steel, the world’s most-recycled material. Given the increased awareness of “green” construction, steel is the material of choice because of its major recycled content and recyclability attributes. Steel products use less energy to manufacture, ship and install than their concrete counterparts.

Naturally-weathering steel

Our Prefabricated Steel Bridges are made from recycled steel and are available in naturally-weathering or custom-painted finish options. Weathering steels provide a number of environmental benefits.

Minimal site impact

Minimal site impact

Efficient bridge and culvert designs install quickly and easily with minimal site impact.

Open flow designs

Open flow designs

Wide-span capability prevents blockages and flooding associated with concrete box designs.



Virtually no maintenance compared to concrete, reduces future costs, negative site impact.

Salt and soft water

Salt and soft water

Use of corrosion/abrasion-resistant Dur•A•Span Aluminum protects salt and soft water habitat.

Fish Passages

Fish passages

Fish baffle inserts and open-bottomed culverts with integrated footings facilitate fish movement.

Fauna crossings

Wildlife crossings

Custom-designed underpass and overpass crossings help protect species, preserve habitat, and increase safety.

Culvert relines

Culvert relines

Help salvage older structures and avoid the cost, safety and environmental issues of full replacement.