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MISSISSIPPI RIVER BRIDGE AT LANSING

New Bridge Design Overview


New and Existing Bridge Side By Side

New and existing Lansing Bridge side by side Click image to view large version

New and Existing Bridge Details

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 Lansing Bridge details Click image to view large version


Durable Bridge Coating System

TSZ Arc Spray 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.

Exterior (ZmSU) and Interior (ZmSE+E) coating

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.

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