The construction phase is the end of the planning phase and beginning of the implementation phase. At this point, the DOTs have the majority of the responsibility for ensuring the agreements made to date are carried out in the spirit of the planners. An implementation liaison, identified in Step 3.3, can greatly assist in this effort.
The Decision Guide is primarily intended to assist in the planning and selection of wildlife crossing structures as mitigation for highway impacts to wildlife. Thus this phase of the guide is limited to noting that for purposes of ensuring wildlife crossing structures work as intended, it is not only important to plan, but also to implement, the elements documented in the implementation plans pertinent to mitigation.
4.1 During and after construction of the project's wildlife crossing structures, the monitoring plan is a key tool to determine the effectiveness of the mitigation. Performance measures identified in Step 1.3 will assist the implementation liaison in determining if project objectives are being met.
4.2 The maintenance plan begins when needed, with elements of wildlife crossing structures possibly requiring evaluation and possibly maintenance prior to the completion of construction of the project. Regular maintenance is more likely with lower durability items such as fences, but may also be a result of damage from construction activities. Continual attention to maintenance is the key to the proper functioning of structures.