| Vernita Bridge | Benton, WA | 18.2 miles | SE |
| Twin Bridges | Benton, WA | 45.7 miles | SE |
| Umatilla Bridge | Umatilla, OR | 70.6 miles | SE |
| Madame Dorion Bridge | Walla Walla, WA | 73.9 miles | SE |
| Lewis Bridge | Lincoln, WA | 75.8 miles | NE |
| Luckenbill Bridge | Walla Walla, WA | 78 miles | SE |
| Rocky Ford Bridge | Lincoln, WA | 79.3 miles | NE |
| Canyon Bridge | Pierce, WA | 81.3 miles | SW |
| Lyons Ferry Bridge | Franklin, WA | 83.1 miles | SE |
| Natural Bridge | Pierce, WA | 86.1 miles | NW |
| Cora Bridge | Lewis, WA | 91.5 miles | SW |
| Sam Hill Memorial Bridge | Sherman, OR | 93.1 miles | SW |
| Taylor Bridge | Gilliam, OR | 97 miles | SW |
| Rieth Bridge | Umatilla, OR | 98.6 miles | SE |
| Cottonwood Bridge | Sherman, OR | 99.5 miles | SW |
| Joe West Bridge | Umatilla, OR | 101.1 miles | SE |
| Dorothy Bridge | Umatilla, OR | 102.3 miles | SE |
| Wickersham Bridge | Walla Walla, WA | 102.6 miles | SE |
| The Dalles Bridge | Wasco, OR | 104.4 miles | SW |
| The Dalles Bridge | Klickitat, WA | 104.4 miles | SW |
| Tucker Bridge | Hood River, OR | 114.2 miles | SW |
| Bridge of the Gods | Hood River, OR | 125.9 miles | SW |
| Dry Run Bridge | Hood River, OR | 127.1 miles | SW |
| High Bridge | Hood River, OR | 127.8 miles | SW |
| Four One Half Mile Bridge | Hood River, OR | 128 miles | SW |
|