Please read the following table in Markdown format and then answer the question according to the table. Table cells in one row are seperated by '|', and different rows are seperated by '
'.

Table:
| Name | Built | Listed | Location | County |
| --- | --- | --- | --- | --- |
| Boise River and Canal Bridge | 1922 | 2007-02-07 | Caldwell | Canyon |
| Bullion Tunnel | 1910 | 1984-09-20 | Avery | Shoshone |
| Capitol Boulevard Memorial Bridge | 1931 | 1990-11-05 | Boise | Ada |
| Cold Springs Pegram Truss Railroad Bridge | 1894, 1917 | 1997-07-25 | Ketchum | Blaine |
| Conant Creek Pegram Truss Railroad Bridge | 1894, 1911, 1916 | 1997-07-25 | Grainville | Fremont |
| Gimlet Pegram Truss Railroad Bridge | 1894, 1914 | 1997-07-25 | Ketchum | Blaine |
| Grace Pegram Truss Railroad Bridge | 1894, 1913 | 1997-07-25 | Grace | Caribou |
| Ninth Street Bridge | 1911 | 2001-09-14 | Boise | Ada |
| North Fork Payette River Bridge | 1933 | 1999-04-02 | Smiths Ferry | Valley |
| Owsley Bridge | 1921 | 1998-09-18 | Hagerman | Gooding |
| Ririe A Pegram Truss Railroad Bridge | 1894, 1914 | 1997-07-25 | Ririe | Jefferson |
| Ririe B Pegram Truss Railroad Bridge | 1894, 1914 | 1997-07-25 | Ririe | Jefferson |
| St. Anthony Pegram Truss Railroad Bridge | 1896, 1914 | 1997-07-25 | St. Anthony | Fremont |
| Washington Water Power Bridges | 1929, 1930 | 1996-12-20 | Post Falls | Kootenai |
Question:
When was the historic place listed that's in canyon county?
Answer:
2007-02-07