New Bridge Design Renderings
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New and Existing Bridge Details
| Detail | New | Existing |
|---|---|---|
| Road width | 40' | 21' |
| Channel width | 750' | 650' |
| Main bridge structure type | Steel through-truss | Steel through-truss |
| Total length of steel truss | 1352' | 1152' |
| Total length of bridge | 1724' | 1702' |
| Max height above normal water level | 180' | 165' |
| Channel clearance | 60-64' | 68' |
| Bridge deck type | Reinforced concrete | Welded steel grate |
| Bridge deck width | 40' | 21' |
| Driving lane widths | 12' | 10' |
| Shoulder widths | 8' | No shoulders |
| How the roadway grade changes across the bridge | Continuous gradual curve | Straight lines with sharp changes |
| Steepest roadway slope | 6% | 7% |
| Speed limit on the bridge | 25 MPH | 25 MPH |
New and Existing Bridge Side By Side
Bridge Details
Durable Bridge Coating System
To ensure our bridge stands the test of time, we are using an advanced duplex coating system that combines two protective layers for maximum durability. The process begins with thermal spray zinc (TSZ) metalizing, which applies a protective zinc layer to prevent rust. This is followed by a multi-layer epoxy and urethane system to enhance durability and UV resistance.
For exterior surfaces, we use ZmSU - a combination of zinc metalizing, an epoxy sealer, and a UV-resistant urethane topcoat for protection against sunlight and wear. For interior steel surfaces, which are not exposed to UV rays, we use ZmSE+E, incorporating an extra epoxy layer for enhanced resilience.
This innovative coating system is designed to ensure the bridge remains strong and visually appealing for its 100-year design life.