REDIDEK® BRIDGE REPLACEMENT SYSTEM
Up to 75% Faster than on-site Field-fabricated Construction
TrueNorth Steel
Bridge Replacement System
TrueNorth Steel’s innovative process uses lightweight prefabricated galvanized corrugated steel bridge deck panels. RediDek® bridge deck panels arrive on site ready to install on existing steel, wood or concrete girders.
Steel Specifications & Span Tables
Table 1 – Engineering Data, 12” x 4-1/4” Bridge Flooring – Type A
| Nominal Gauge | Design Thickness (in) | Yield Strength (ksi) | Approx. Weight (psf) | Moment of Inertia (in4/ft) | Section Modulus (in3/ft) | HS 15-44 | HS 20-44 | HL-93 | U80 |
|---|---|---|---|---|---|---|---|---|---|
| 12 | 0.104 | 50 | 7.4 | 6.05 | 2.92 | 65 | 52 | 52 | N/A |
| 9 | 0.149 | 50 | 10.5 | 8.83 | 4.02 | 77 | 61 | 61 | 59 |
| 7 | 0.179 | 50 | 12.6 | 10.59 | 4.78 | 89 | 70 | 70 | 67 |
The allowable net spans presented in the table above are for informational purposes only and require consultation with the project engineer for specific product application recommendations.
Features and Benefits
- AISC-certified manufacturing facilities ensure the highest quality construction and fabrication.
- Fracture Critical Endorsement to meet the most stringent bridge fabrication demands.
- Sophisticated Paint Endorsement.
- Designed and fabricated to applicable AASHTO/ASTM Standards
REDIDEK® Specifications
- Net span is the clear span between girder flanges.
- Allowable net span is based on 3-3/4” of gravel ballast cover above the top flange of 4-1/4” decking.
- Steel decking shall be 4-1/4”deep x 12” lay length “Type A” galvanized corrugated steel conforming to ASTM
- A653 grade 50.
- Steel decking shall be galvanized G200 coating weight per ASTM A653.