A State-of-the-Art Structure
Steel is one of the most sophisticated building materials available today. Its state-of-the-art composition can bring about significant cost savings, as well as innovation in building. The advantages of steel as a lighter weight and more durable material than concrete results in quicker and easier construction.The Seneca style is a bow-string Pratt Truss girder bridge is formed by mechanically curving the top chord into an arch shape along a parabolic curve. It has vertical members at every panel point which shrinks the floor beams and minimizes or eliminates stringer beams.
Aesthetics and Practicality
The truss design is a welded or bolted Pratt truss configured in the Seneca style as manufactured by U.S. Bridge. The Seneca style is a beautiful curved shape that adds to the efficiency of the bridge. The trusses each have a continuous arched top chord, a single diagonal member in each truss panel, and a vertical member at each interior bottom chord panel point. The bottom (tension) chord of each truss consists of two equal-sized members with adequate section properties to provide redundancy.
The Seneca style offers many benefits, thus making it a preferred bridge. This bridge has an all-bolted construction option, which allows for easy on-site erection. It also has upper bracing that supports for longer length spans of up to 300′. Further, there are galvanized or self weathering finishes available. Lastly, the Seneca bridge guarantees a life span of 100+ years.
Gallery
View the U.S. Bridge portfolio of Seneca Designs
Compare Seneca to Other Bridges
| Bridge Type | Min Length | Max Length | Min Width | Max Width | Use |
|---|---|---|---|---|---|
| Cortez | 10 | 80 | 8 | 100 | Permanent |
| Cambridge | 40 | 200 | 10 | 40 | Permanent |
| Cambridge Flat | 40 | 200 | 10 | 40 | Permanent |
| Viking | 40 | 200 | 10 | 40 | Permanent |
| Seneca | 40 | 200 | 10 | 40 | Permanent |
| Thru Truss | 60 | 300 | 10 | 40 | Permanent |
| Liberty | 50 | 200 | 10 | 36 | Permanent or Emergency |
