| Designator | SBB50d | 
| Material | Steel Tube/Box (B) | 
| Test Specification | AASHTO MASH 2016 | 
| Test Level | TL-4 | 
| Perm/Temp | Permanent | 
| Mounting Type | Curb/Sidewalk | 
| Deck Type | Conventional Reinforced Concrete | 
| Aesthetic | No | 
| See-Through | Yes | 
| Retrofit | No | 
| Combo Traffic/Pedestrian | No | 
| Contact | Alaska Department of Transportation | 
| Drawing Status | Review Complete | 
| Manufacturer | Non-Proprietary | 
| FHWA Eligibility Letter | B-327.pdf | 
| Components | |
| Drawings | SBB50d_20180514.pdf | 
| Other Docs | SBB50d_mash_report_two_201904.pdf | 
| Archive | |
| External Links | 
Alaska MASH 2-Tube Bridge Rail
    
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