| Designator | SGR21b |
| System Type | Roadside Barrier (R) |
| Test Specification | NCHRP Report 350 |
| Test Level | TL-3 |
| Rail Type | W-Beam |
| Deflection Category | Semi-Rig |
| Dynamic Deflection | |
| Working Width | |
| Aesthetic | Yes |
| Width | |
| Height | 30" [762mm] < H ≤ 33" [838mm] |
| Manufacturer | Non-Proprietary |
| Drawing Status | Review Complete |
| Contact | Midwest Roadside Safety Facility |
| FHWA Eligibility Letter | B-133.pdf |
| Components | |
| Drawings | SGR21a-b_final20110908.pdf |
| Other Docs | B-133.pdf |
| Archive | SGR21ab.pdf |
| External Links |
Midwest Guardrail System, Wood Post, 37-1/2" Spacing
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