Trail Rehabilitation
Scope Tip
Before defining rehabilitation work, consider whether the existing trail should be rehabilitated or whether a reroute is the more appropriate solution. Where the existing alignment is contributing to severe or recurring problems, repairing the damage and addressing the underlying causes may require more work than relocating the trail to a more appropriate alignment. Rehabilitation may include localized reroutes, but when rehabilitation is appropriate, use the applicable Construction Scope Items to clearly define the work involved.
Scope Item Definition
Restore or improve an existing trail when routine maintenance alone is no longer sufficient to address its condition, function, or intended trail experience.
Trail rehabilitation may include substantial work to existing tread, drainage, surfacing, structures, specialty trail features, or other trail components while retaining all or portions of the existing trail and alignment.
When / Where It Applies
Trail rehabilitation may be appropriate when:
An existing trail has deteriorated beyond what can reasonably be addressed through routine maintenance.
Erosion, drainage, tread degradation, widening, or other problems require substantial treatment.
Existing surfacing, hardening, structures, or specialty trail features require substantial repair or replacement.
Portions of an existing trail need to be modified or rerouted to address site conditions or improve trail function.
An existing trail needs improvements to better meet current trail specifications, management objectives, intended uses, or desired trail experience.
Scope Considerations
Depending on the project, the scope should consider and clearly define:
Trail sections, locations, and features to be rehabilitated.
Existing conditions and known causes of degradation or deficiencies.
Intended trail uses, desired trail experience, and applicable trail specifications or management objectives.
Rehabilitation treatments and types of work included.
Whether portions of the existing trail should be retained, repaired, replaced, rerouted, or decommissioned.
What may be adjusted or determined in the field and who has authority to make those decisions.
Materials to be reused, salvaged, provided, imported, or removed.
Access, equipment, staging, hauling, and material-transport constraints.
Applicable permits, approvals, BMPs, resource-protection requirements, or seasonal restrictions.
Required finished conditions and approval requirements.
For specific tread, drainage, surfacing, hardening, structure, specialty-feature, restoration, or decommissioning work, use the applicable Construction Scope Items to further define the work.
Owner-Provided Information
The owner should provide the following, if available and applicable:
Trail maps, GIS data, and existing trail or feature inventories.
Trail Inventory + Condition Assessment findings, previous assessments, maintenance records, or inspection reports.
Existing plans, drawings, specifications, or as-built information.
Trail specifications, management objectives, intended uses, or other applicable standards.
Known site, trail, drainage, structural, resource, or user-related concerns.
Applicable permits, approvals, BMPs, environmental documentation, and resource-protection requirements.
Available information about access, staging, material sources, seasonal restrictions, and other construction constraints.
Construction Specifications + Field Decision-Making
Because rehabilitation responds to existing and sometimes uncertain field conditions, the scope should clearly identify what is fixed, what may be adjusted or determined in the field, who has authority to make those decisions, and how unforeseen conditions or changes will be addressed.
Applicable Construction Scope Items should be used to further define specifications and requirements for specific types of rehabilitation work.
Completed Work / Deliverables
Depending on the scope, completed work may include:
Rehabilitated trail tread, corridor, drainage, surfacing, structures, or specialty trail features.
Rerouted or reconstructed trail sections.
Stabilized and restored areas disturbed by the work.
Removal or treatment of abandoned or replaced trail sections, features, materials, or construction debris.
Required as-built documentation, photographs, GIS data, quantities, or other project records.
Quality Assurance + Approval
Quality assurance and approval should be based on the project scope, applicable trail specifications, plans or design requirements, and required finished conditions.
The scope should identify applicable criteria for evaluating completed work, required inspections or documentation, responsibility for approving field adjustments and completed work, and how deficiencies will be addressed before final approval.
Pricing & Payment Considerations
Trail rehabilitation may be priced as a lump sum, by trail mile or linear foot, by work item or quantity, on a time-and-materials basis with a not-to-exceed amount, or through a combination of methods.
Pricing will depend on existing conditions, the type and extent of rehabilitation, access and material transport, and how much of the work and quantities can be defined in advance.
Where conditions or quantities are uncertain, clearly define how estimated quantities, changed conditions, additional work, and resulting adjustments to price or scope will be handled.
Common Scope & Contracting Issues
Using “trail rehabilitation” without defining the specific work included.
Not adequately assessing existing conditions or underlying causes before defining the work.
Rehabilitating an existing alignment when rerouting may provide a more appropriate solution.
Not distinguishing what will remain, be repaired, replaced, rerouted, or removed.
Unclear field decision-making authority when conditions differ from those anticipated.
Not defining which construction activities are included or how they will be quantified and priced.
Underestimating access, material transport, staging, or other logistical requirements.
Not establishing how unforeseen conditions, changed quantities, or additional work will be addressed.