Caltrans Vegetative Spec Guidance

Caltrans improves specification and guidance for "Minor Concrete Vegetation Control."  
Caltrans issues an up-dated specification and a new guidance document for "Minor Concrete Vegetation Control."  The changes are intended to further help the goals of reducing herbicide use and maintenance activities by using concrete under new guardrails and barriers.  The specification change also addresses an issue in the comprehensive strength requirement for the concrete mix that made the prior specifiction difficult. 
Caltrans CPB #17- 6 -