| Vernita Bridge | Benton, WA | 16.7 miles | SE |
| Twin Bridges | Benton, WA | 44 miles | SE |
| Umatilla Bridge | Umatilla, OR | 69.4 miles | SE |
| Madame Dorion Bridge | Walla Walla, WA | 71.9 miles | SE |
| Lewis Bridge | Lincoln, WA | 74.1 miles | NE |
| Luckenbill Bridge | Walla Walla, WA | 75.6 miles | SE |
| Rocky Ford Bridge | Lincoln, WA | 76.7 miles | NE |
| Lyons Ferry Bridge | Franklin, WA | 80.3 miles | SE |
| Canyon Bridge | Pierce, WA | 84.2 miles | SW |
| Natural Bridge | Pierce, WA | 88.9 miles | NW |
| Cora Bridge | Lewis, WA | 94.3 miles | SW |
| Sam Hill Memorial Bridge | Sherman, OR | 94.4 miles | SW |
| Rieth Bridge | Umatilla, OR | 97.1 miles | SE |
| Taylor Bridge | Gilliam, OR | 97.3 miles | SW |
| Joe West Bridge | Umatilla, OR | 98.9 miles | SE |
| Wickersham Bridge | Walla Walla, WA | 100.1 miles | SE |
| Cottonwood Bridge | Sherman, OR | 100.1 miles | SW |
| Dorothy Bridge | Umatilla, OR | 100.1 miles | SE |
| The Dalles Bridge | Wasco, OR | 106 miles | SW |
| The Dalles Bridge | Klickitat, WA | 106 miles | SW |
| Tucker Bridge | Hood River, OR | 116.1 miles | SW |
| Bridge of the Gods | Hood River, OR | 128 miles | SW |
| Dry Run Bridge | Hood River, OR | 129 miles | SW |
| High Bridge | Hood River, OR | 129.8 miles | SW |
| Four One Half Mile Bridge | Hood River, OR | 130 miles | SW |
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