| Designator | SBB46d | 
| Material | Steel Tube/Box (B) | 
| Test Specification | NCHRP Report 350 | 
| Test Level | TL-4 | 
| Perm/Temp | Permanent | 
| Mounting Type | Steel Floor Beam | 
| Deck Type | |
| Aesthetic | No | 
| See-Through | Yes | 
| Retrofit | Yes | 
| Combo Traffic/Pedestrian | No | 
| Contact | RoadSafe LLC | 
| Drawing Status | No Drawing | 
| Manufacturer | Non-Proprietary | 
| FHWA Eligibility Letter | B-50A.pdf | 
| Components | |
| Drawings | SBB46d(final).pdf | 
| Other Docs | |
| Archive | |
| External Links | 
Modified NETC 4-Bar for Through-Truss Bridges
    
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