11 bridges with vertical clearance data on I-A21 in Alaska. Lowest: 154.9ft.
| Clearance | Carries | Crosses | Location | Built | Map |
|---|---|---|---|---|---|
| 154.9ft | Alaska Highway | Yerrick Creek | Mile Point 109.5 | 1985 | Map |
| 154.9ft | Alaska Highway | Cathedral Rapids No 1 | Mile Point 114.1 | 1985 | Map |
| 154.9ft | Alaska Highway | Robertson River | Mile Point 123.2 | 1944 | Map |
| 154.9ft | Alaska Highway | Cathedral Rapids No 2 | Mile Point 114.6 | 1985 | Map |
| 154.9ft | Alaska Highway | Cathedral Rapids No 3 | Mile Point 114.9 | 1985 | Map |
| 154.9ft | Alaska Highway | Bear Creek | Mile Point 133.2 | 1985 | Map |
| 154.9ft | Alaska Highway | Chief Creek | Mile Point 134.6 | 1985 | Map |
| 154.9ft | Alaska Highway | Berry Creek | Mile Point 147.3 | 1990 | Map |
| 154.9ft | Alaska Highway | Sears Creek | Mile Point 150.2 | 1982 | Map |
| 154.9ft | Alaska Highway | Dry Creek | Mile Point 153.8 | 1957 | Map |
| 154.9ft | Alaska Highway | Sheep Creek | Mile Point 118.1 | 1985 | Map |