List of Classified Structures
List of Classified Structures
Return to Results Page 
Advanced Search
Record: 1  20 21 22 23 24 25 26 27 28 29 30 31 of 26261
Identification:

Preferred Structure Name:
Motor Roads - Retaining Walls
Structure Number:
60115-008
Other Structure Name(s):
 
Other Structure Name(s)
No records.
Park:
Acadia National Park
Historic District:
 
Historic District
No records.
Structure State:
Maine
Structure County:
Hancock
Region:
Northeast
Cluster:
New England
Administrative Unit:
Acadia National Park
LCS ID:
751890
 
Historical Significance:

National Register Status:
Determined Eligible - SHPO
National Register Date:
09/18/2008
National Historic Landmark?:
No
Significance Level:
Contributing
Short Significance Description:
Part of Motor Road System that is nationally significant under Criterion A for conservation, recreation and transportation, Criterion B for association with John D. Rockefeller, Jr., and Criterion C for architecture & engineering.
Long Significance Description:
The ACAD Motor Road System is significant under Criterion A for illustrating the NPS system-wide goal of providing public access to national parks while conserving natural beauty, Criterion B as an example of John D. Rockefeller, Jr.’s interest in the construction and beautification of roads in the national parks and his collaboration with the NPS, and Criterion C as including excellent examples of the NPS Rustic Design style. The period of significance for the road system begins in 1922 when Superintendent George B. Dorr submitted a plan to the NPS for the park’s first motor road, and ends in 1958 when the final segment of the system was completed.

Construction of the ACAD Motor Road System was conceived to allow the construction of roads for automobiles in the park while preserving its natural beauty. The system began in 1922 when Superintendent Dorr submitted a plan to NPS Director Stephen Mather for a motor road that ran from Eagle Lake Road and along Eagle Lake and Jordan Pond. Rockefeller contributed much of the vistion, resources, and supervision necessary to accomplish the construction of the Motor Road System, his interest stemming from preventing automobile use of the carriage roads that he was constructing on the island. In 1927 the park developed a Master Plan in which all projects that would be characterized by the emerging NPS Rustic Design style, which created a rugged and frontier-like quality appropriate to a wilderness setting while allowing features to be customized with local materials to fit the setting.

Retaining walls were built in situations where rock embankments were going to be too wide or high. The walls were constructed using locally quarried stones, which evoked the Rustic Design Style and blended well with the adjacent rock outcroppings. The use of such walls helped minimize the width of cut and fill sections and, like rock embankments, also helped preserve adjacent vegetation. Some of the retaining walls were mortared, but most were dry-laid construction, which allowed water to seep through the joints. In the steepest areas, the retaining walls aften included part of a longer guardwall, the stones secured on top of the wall in a mortared trench.
 
Construction Period:

Construction Period:
Historic
Chronology:
 
Physical Event
Begin Year
Begin Year CE/BCE
End Year
End Year CE/BCE
Designer
Designer Occupation
1. 
Built
1927
CE
1958
CE
NPS
Other
 
Function and Use:

Primary Historic Function:
Enclosure/Exclosure
Primary Current Use:
Enclosure/Exclosure
Other Functions or Uses:
 
Other Function(s) or Use(s)
Historic or Current
1. 
Erosion Control
Historic
2. 
Erosion Control
Current
 
Physical Description:

Structure Type:
Grounds/Landscape
Material(s):
 
Structural Component(s)
Material(s)
1. 
Superstructure
Stone
Short Physical Description:
44 dry-laid stone retaining walls (10,504 lf) and 9 mortared stone retaining walls (1,708 lf). There are also 17 guardwall/retaining wall structures (4,430 lf) with dry-laid or mortared retaining walls topped by a guardwall comprised of individual stones or a low mortared parapet-type wall.