Section 2: Documentation Requirements and Guidelines
Anchor: #i1006951Documentation Requirements for Existing Locations
When replacing a structure, prepare a comparative 100-year hydraulic analysis between existing and proposed structures. When rebuilding, improving, or rehabilitating a roadway, consider associated drainage facilities such as improvements, extensions, paralleling, replacements, and leaving the facility unchanged.
Whatever action is taken, the plans and submission information should document sufficient data, along with basic pertinent hydrologic and hydraulic information.
- In most cases, refer to the Data Documentation Requirements table for items to be included in the plans.
- If verified, use data from the original documentation file.
- If previous hydraulic data are available and applicable, provide a note on the proposed plans referring to the Control Section and Job number (CSJ), and state verification of the data.
Documentation of experience with the past performance of a facility is also useful. Such experience may include operation during flood events, erosion activity, structural response to flood events, failures, maintenance required (and for what reason), and description and cost of maintenance.
District offices should develop and maintain systematic documentation files of facility experiences either at the district or at the local level.
Refer to the stipulations found in 23 CFR §650.117 for absolute requirements on federally funded projects. Pertinent information from this document is in the Federal Aid Policy Guide (FAPG) in Policy. The detail of design investigation and documentation should be proportional to the risk associated with encroachment and other economic, engineering, social, or environmental concerns. Consult resource agencies for assistance with documentation. See Resources for primary resource agencies.
Anchor: #i1007007Documentation Reference Table
The following tables indicate the required documentation of various facility types for preliminary review, PS&E (Plans, Specifications, and Estimates) review, and field change requests. The tables also indicate whether the information should reside in construction plans. The construction plans constitute part of the permanent file, but not all project information resides in the construction plans.
The following table shows the data documentation requirements:
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Documentation Item (by facility type) |
Stage |
Location of Information |
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