| Project Name | Status | County | Project type | Primary Threat | |
|---|---|---|---|---|---|
 |
Ralston Cemetery | Saved | Jefferson | Colorado's Most Endangered | Vandalism |
|
|
Red Cliff Arch | Progress | Eagle | ||
 |
Red Cliff Town Hall | Alert | Eagle | Colorado's Most Endangered | Economic Challenges, Lack of Maintenance, Vacancy |
|
|
Red Mountain Mining District | Saved | Ouray, San Miguel | Colorado's Most Endangered | Natural Elements |
|
|
Redstone Castle | Saved | Pitkin | Colorado's Most Endangered | Demolition |
|
|
Redstone Castle | Complete | |||
|
|
Rehder Block | Active Project | Routt | CPI Easement | |
|
|
Reiling Gold Dredge | Saved | Summit | Colorado's Most Endangered | Demolition by Neglect |
|
|
Rialto Theatre | Saved | Alamosa | Colorado's Most Endangered | Natural Elements |
|
|
Rifle Masonic Lodge | Complete | |||
|
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Rito Seco Creek Culvert | Progress | Costilla | ||
|
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Riverside Cemetery | Alert | Adams, Denver | Colorado's Most Endangered | Lack of Maintenance |
|
|
Rock Creek Stage Stop | Saved | Routt | Colorado's Most Endangered | Demolition by Neglect |
|
|
Rouch Gulch Bridge | Progress | Fremont | ||
|
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Sacred Heart Church | Alert | Costilla | Demolition by Neglect | |
|
|
Saguache Hotel | Active | Saguache | Construction Documents, Door Restoration, Exterior Restoration, Masonry Restoration, Porch Restoration, Window Restoration | |
|
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Saguache Hotel, Saguache | Active Project | Saguache | CPI Rural Revitalization Grant Project | |
|
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Salida Opera House | Progress | Chaffee | Colorado's Most Endangered | Demolition by Neglect |
|
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San Juan River Bridge | Progress | Montezuma | ||
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San Miguel River Bridge | Progress | San Miguel |
