These plans show all the details necessary to fabricate this barrier system.
This guardrail system may be used on designated scenic byways and heritage tour routes if funding can be arranged.
The Steel-backed Timber Guardrail system consists of a timber rail with a steel plate attached to the back to increase its tensile strength.
The most desirable method of terminating a run of Steel-backed Timber Guardrail is with a buried terminal in a backslope. When this is not feasible, the system is limited to use on highways with a posted speed of 45 mph or less, and the barrier run is required to flare away from the traveled way and terminate in a berm.
View Plan Sheet TB-25 (pdf 273 KB)
View Plan Sheet TB-26 (pdf 285 KB)
View Plan sheet TB-27 (pdf 198 KB)
View Plan Sheet TB-28 (pdf 386 KB)
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