Corridor Management Plans

Corridor Management Plans

A corridor management plan (CMP) is a grassroots-level community planning document that covers the entire scenic roads.

A CMP is an inventory of the characteristics, features, resources and special qualities of the roadway. The document consists of the following components that, together, provide for the conservation and enhancement of the roadway's intrinsic qualities while promoting tourism and economic development, all for the users' enjoyment of the roadway.

  • Location
  • Physical description
  • Intrinsic qualities
  • Visitor needs and expectations
  • Marketing and promotion
  • People's involvement & responsibilities

In addition, the FHWA requires specific elements that must be in any CMP.

The CMP must be completed as part of nominating a scenic road for national designation.


The location component of a CMP includes descriptive language and a well-illustrated location map showing the corridor boundaries (length and width), population centers, natural landmarks and labeled routes.

Although not required, United States Geological Survey (USGS) maps are suggested because they provide excellent details of landforms and building locations.

Physical Description

The CMP should have a description of the physical corridor of the road and its safety. Such description includes a discussion of the design standards for any proposed modifications to the roadway (e.g., shoulder improvements, road widening, curve straightening). The document should evaluate the likely effects of designation to the natural and cultural intrinsic qualities associated with the byway corridor.

There also should be discussion on how the "footprint" of the corridor was developed by determining why the endpoints and widths were chosen along its length.

The CMP should provide a general review of the roadway's safety and accident record to identify any improvements to the highway by design, maintenance or operation to enhance the motorist enjoyment of the scenic road. The CMP should identify areas that may be problems for drivers who are not familiar with the route and identify possible corrections.

Intrinsic Qualities

Intrinsic qualities are features that are considered representative, unique, irreplaceable, or distinctly characteristic of an area.

The CMP should analyze and describe the intrinsic qualities and how they are to be managed and interpreted. Specifically, the CMP should include these areas of intrinsic quality documentation:

  • Intrinsic Quality Assessment
  • Intrinsic Quality Management Strategy
  • Interpretation Plan

Intrinsic Quality Assessment

Identify the intrinsic qualities along the roadway and describe the resources that contribute to these qualities. Evaluate which qualities are of local, regional or national importance. There are six intrinsic qualities and a brief explanation follows:

  • Scenic: Beauty, whether natural or human-made. The quality of the features is measured by how memorable, distinctive, uninterrupted and unified they are.
  • Natural: Minimal human disturbance of the natural ecological features that are associated with the region.
  • Historic: Landscapes, buildings, structures or other visual evidence of the past. It has to be something that can still be seen, not just the site of something that used to be there.
  • Cultural: Visual evidence of the unique customs, traditions, folklore or rituals of a currently existing human group.
  • Archaeological: Visual evidence of the unique customs, traditions, folklore or rituals of a no-longer existing human group.
  • Recreational: The road corridor itself is used for recreation like jogging, biking, roadside picnics or direct access to recreational sites like campgrounds, lakes, ski lodges, sightseeing, etc.

Intrinsic Quality Management Strategy

Describe how the intrinsic qualities will be managed through preservation or conservation and what protection tools are available (e.g., zoning, overlay districts, easements).

Interpretation Plan

Describe what methods are in place or planned to familiarize visitors with the significant byway resources (e.g., museums, festivals, interpretive markers, kiosks).

Visitor Needs & Expectations

The CMP should identify elements that are in place and planned to meet the needs and expectations of visitors, locals residents and business. Specifically, the needs and expectations include the elements that follow.

Visitor Experience Plan

List and discuss how to minimize any disruptions to the visitor experience. Identify plans for making improvements to enhance that experience.

Development Plan

Describe methods for enhancing existing development and for accommodating new development while preserving the intrinsic qualities of the corridor (e.g., design review, land management techniques, economic incentives).

Commerce Plan

Describe how commercial traffic and business access, including services for travelers, will be accommodated while ensuring the safety of sightseers, bicyclists and pedestrians.

Sign Plan

Describe how the number and placement of highway signs will support the visitor experience and help tourists find their way while not obscuring or detracting from scenery. This plan should consider signs for international tourists who may not be fluent in English.

Outdoor Advertising Control Compliance

Show that all existing local, state and federal laws on the control of outdoor advertising are being met.

Marketing & Promotion

The CMP should describe how the route's promotion and marketing will be accomplished.

Marketing Narrative

Describe how the scenic road be marketed and publicized, what actions are in place and what is planned.

Promotion Plan

Describe how the scenic road will be promoted, interpreted and marketed to attract travelers, including those from other countries, and identify the organizations or agencies responsible for these activities.

Multilingual Information Plan

Address multilingual information needs, what is planned and what is available for the international visitor.

Tourism Plan

Describe how increased tourism will be accommodated, if this is projected. Include how lodging and dining facilities, roadside rest areas and other tourist necessities are in place or planned.

People's Involvement & Responsibilities

The CMP should describe who, how and when the local byway management group will implement plans and take responsibility for actions along the route.

Public Participation Plan

Discuss how ongoing public participation will be achieved for the implementation of CMP objectives.

Responsibility Schedule

List the specific and general responsibilities of all agencies, groups and individuals that are part of the team that will carry out the plan. Describe how compliance will be determined. Include a schedule of if, when and how those responsibilities are being met.


Required Elements for a Corridor Management Plan

The Federal Highway Administration lists 14 elements that must be in any corridor management plan (CMP) submitted for national designation.

If the roadway is designated for an All-American Road designation, there are three additional elements that must be in the CMP.

National Scenic Byways and All-American Roads

  • A map identifying the corridor boundaries and the location of intrinsic qualities and different land uses within the corridor
  • An assessment of the intrinsic qualities and their context
  • A strategy for maintaining and enhancing those intrinsic qualities
  • The level of protection for different parts of National Scenic Byways or All-American Roads can vary, with the highest level of protection afforded those parts which most reflect their intrinsic values. All nationally recognized scenic byways should, however, be maintained with particularly high standards, not only for travelers' safety and comfort, but also for preserving the highest levels of visual integrity and attractiveness strategy for maintaining and enhancing each of those intrinsic qualities.
  • A schedule and a listing of all agency, group and individual responsibilities in the implementation of the corridor management plan, and a description of enforcement and review mechanisms, including a schedule for the continuing review of how well those responsibilities are being met
  • A strategy describing how existing development might be enhanced and new development might be accommodated while still preserving the intrinsic qualities of the corridor
  • This can be done through design review, and such land management techniques as zoning, easements and economic incentives.
  • A plan to assure ongoing public participation in the implementation of corridor management objectives
  • A general review of the road's or highway's safety and accident record to identify any correctable faults in highway design, maintenance or operation
  • A plan to accommodate commerce while maintaining a safe and efficient level of highway service, including convenient user facilities, a plan to accommodate commercial traffic while ensuring the safety of sightseers in smaller vehicles, as well as bicyclists, joggers and pedestrians.
  • A demonstration that intrusions on the visitor experience have been minimized to the extent feasible and a plan for making improvements to enhance that experience
  • A demonstration of compliance with all existing local, state and federal laws on the control of outdoor advertising
  • A signage plan that demonstrates how the state will ensure and make the number and placement of signs more supportive of the visitor experience
  • A narrative describing how the National Scenic Byway will be positioned for marketing
  • A discussion of design standards relating to any proposed modification of the roadway
  • This discussion should include an evaluation of how the proposed changes may affect the intrinsic qualities of the byway corridor.
  • A description of plans to interpret the significant resources of the scenic byway

Additional Elements for All-American Road Designations

  • A narrative on how the All-American Road would be promoted, interpreted and marketed to attract travelers, especially those from other countries
  • The agencies responsible for these activities should be identified.
  • A plan to encourage the accommodation of increased tourism, if this is projected
  • Include some demonstration that the roadway, lodging and dining facilities; roadside rest areas; and other tourist necessities will be adequate for the number of visitors induced by the byway's designation as an All-American Road.
  • A plan for addressing multilingual information needs
  • Further, there must be a demonstration of the extent to which enforcement mechanisms are being implemented in accordance with the CMP.

Completed Corridor Management Plans

Scenic Road Roadway Year Documents
Patagonia-Sonoita Scenic Road SR 82 and 83 2003 Completed Plan
Sedona-Oak Creek Canyon Scenic Road SR 89A 2005 Completed Plan
Red Rock Scenic Road SR 179 2005 Completed Plan
Historic Route 66 SR 66 2005 Completed Plan
Coronado Trail US 191 2005 Completed Plan
Mingus Mountain Scenic Road /
Jerome-Clarkdale-Cottonwood Historic Road /
Dry Creek Scenic Road
SR 89A 2006 Completed Plan
Kayenta-Monument Valley Scenic Road US 163 2006 Completed Plan
San Francisco Peaks Scenic Road US 180 2008 Completed Plan
Diné Tah (Among the People) Scenic Road N12 and 64 2009 Completed Plan
Swift Trail Parkway SR 366 2011 Completed Plan
Fredonia-Vermillion Cliffs Scenic Road US 89 2012 Completed Plan


Status of Ongoing CMPs

There are currently five ongoing corridor management plans (CMPs), which are listed below. If you have inquiries about any of these ongoing planning documents, please contact: Local Public Agency Section(link sends e-mail).

Scenic Road Roadway Document
Joshua Forest Scenic Road US 93 Draft Plan
Naat'tsits'aan-Navajo Mountain Scenic Road SR 98 Draft Plan
Tse'nikani-Flat Mesa Rock Scenic Road US 191 Draft Plan
Gila-Pinal Scenic Road (Phase 1 Only) US 60 pending draft
Historic Route 66 (Updated CMP) US 66 pending draft