| Fisher Bridge | Whitman, WA | 14.8 miles | NE |
| Matlock Bridge | Whitman, WA | 19.6 miles | NE |
| Central Ferry Bridge | Whitman, WA | 20.2 miles | SE |
| Lyons Ferry Bridge | Franklin, WA | 22.9 miles | SW |
| Torrence Bridge | Whitman, WA | 23.9 miles | NE |
| Rocky Ford Bridge | Lincoln, WA | 33.7 miles | NW |
| Indian Timothy Bridge | Asotin, WA | 49.6 miles | SE |
| Luckenbill Bridge | Walla Walla, WA | 53.4 miles | SW |
| Clearwater River Memorial Bridge | Nez Perce, ID | 57.3 miles | SE |
| Wickersham Bridge | Walla Walla, WA | 59.4 miles | SW |
| Lewis Bridge | Lincoln, WA | 68.3 miles | NW |
| Joe West Bridge | Umatilla, OR | 69.9 miles | SW |
| Dorothy Bridge | Umatilla, OR | 70 miles | SW |
| Madame Dorion Bridge | Walla Walla, WA | 71.6 miles | SW |
| Twin Bridges | Benton, WA | 75.9 miles | SW |
| Vernita Bridge | Benton, WA | 83.4 miles | SW |
| Dent Bridge | Clearwater, ID | 88.4 miles | SE |
| Umatilla Bridge | Umatilla, OR | 91.5 miles | SW |
| Klavano Bridge | Stevens, WA | 96.3 miles | NE |
| Steinmetz Bridge | Stevens, WA | 97.1 miles | NE |
| Rieth Bridge | Umatilla, OR | 97.4 miles | SW |
| Cow Creek Bridge | Wallowa, OR | 97.9 miles | SE |
| Rice Creek Bridge | Idaho, ID | 101.4 miles | SE |
| Antler Ridge | Idaho, ID | 137.9 miles | SE |
| Wind River Pack Bridge | Idaho, ID | 139.6 miles | SE |
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