| Designator | SGR55b | 
| System Type | Roadside Barrier (R) | 
| Test Specification | AASHTO MASH 2016 | 
| Test Level | TL-3 | 
| Rail Type | W-Beam | 
| Deflection Category | Semi-Rig | 
| Dynamic Deflection | Unknown | 
| Working Width | Unknown | 
| Aesthetic | No | 
| Width | 12" [305mm] < W ≤ 24" [610mm] | 
| Height | 30" [762mm] < H ≤ 33" [838mm] | 
| Manufacturer | Non-Proprietary | 
| Drawing Status | As Submitted | 
| Contact | Midwest Roadside Safety Facility | 
| FHWA Eligibility Letter | |
| Components | 4-Space W-Beam Guardrail Timber Guardrail Post MGS Timber Blockout for Timber Guardrail Post Plain Round Washer Guardrail Bolt & Recessed Nut Guardrail Bolt & Recessed Nut | 
| Drawings | |
| Other Docs | |
| Archive | |
| External Links | 
Wood-Post MGS with Omitted Post
    
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