The following bridges and ferries cross the Saint John River in the Canadian province of New Brunswick and U.S. state of Maine.
Crossings
| Name | Carries | Right (west) bank | Left (east) bank |
|---|---|---|---|
| Dickey Road | Dickey, Maine: SR 161 | ||
| Clair-Fort Kent Bridge | US 1 | Fort Kent, Maine: US 1 / SR 161 | Clair, New Brunswick: New Brunswick Route 205 |
| Edmundston–Madawaska Bridge | Bridge Street | Madawaska, Maine: US 1 | Edmundston, New Brunswick: New Brunswick Route 120 |
| railway bridge | Maine Northern Railway (MNR Van Buren Subdivision) | Van Buren, Maine | Saint Leonard, New Brunswick |
| Saint Leonard-Van Buren Bridge | New Brunswick Route 17 | Van Buren, Maine: US 1 | Saint Leonard, New Brunswick: New Brunswick Route 17 |
| New Brunswick Route 2 | Grand Falls: Route 2, New Brunswick Route 218 | Grand Falls: Route 2, New Brunswick Route 108 | |
| railway bridge | Multi-use trail (formerly Canadian Pacific Railway CP Edmundston Subdivision) | Grand Falls | Grand Falls |
| New Brunswick Route 130 | Grand Falls: Route 130 | Grand Falls: New Brunswick Route 108 | |
| Brooks Bridge | Brooks Bridge Road | Limestone | New Brunswick Route 105 |
| Perth-Andover Bridge | New Brunswick Route 109 | Andover: Route 109 | Perth: New Brunswick Route 105, Route 109 |
| New Brunswick Route 130 | Florenceville: Route 130, New Brunswick Route 110 | East Florenceville: Route 130, New Brunswick Route 105 | |
| Florenceville Bridge | Old Florenceville Bridge | Florenceville: Route 110 | East Florenceville: New Brunswick Route 105 |
| Hugh John Flemming Bridge | New Brunswick Route 130 | Hartland: Route 130, New Brunswick Route 105 | Somerville: Route 130, New Brunswick Route 103 |
| Hartland Bridge | Hartland Bridge Road | Hartland: New Brunswick Route 105 | Somerville: New Brunswick Route 103 |
| Grafton Bridge | New Brunswick Route 585 | Woodstock: Route 103 | Grafton: Route 105, Route 585 |
| Hawkshaw Bridge | Hawkshaw Bridge Road | Pokiok: New Brunswick Route 102 | New Brunswick Route 105 |
| Westmorland Street Bridge | Westmorland Street | Fredericton: New Brunswick Route 101, New Brunswick Route 102 | Fredericton: New Brunswick Route 105 |
| Fredericton Railway Bridge | Multi-use trail (formerly Canadian National Railway CN Nashwaak Subdivision) | Fredericton | South Devon |
| Princess Margaret Bridge | New Brunswick Route 8 | Fredericton: Route 8 | Fredericton: Route 8, New Brunswick Route 10, New Brunswick Route 105 |
| Burton Bridge | Burton Bridge | Oromocto: New Brunswick Route 102 | Maugerville: New Brunswick Route 105 |
| Saint John River High Level Crossing | Route 2 | Gagetown: Route 2, New Brunswick Route 102 | Canning: Route 2, New Brunswick Route 105 |
| Gagetown Ferry (cable ferry) | Gagetown: New Brunswick Route 102 | Lower Jemseg: New Brunswick Route 715 | |
| Evandale Ferry (cable ferry) | Evandale: New Brunswick Route 102 | Route 124 | |
| Westfield Ferry (cable ferry) | Westfield: New Brunswick Route 177 | Hardings Point: New Brunswick Route 845 | |
| Reversing Falls Railway Bridge | New Brunswick Southern Railway (NBSR McAdam Subdivision) | Lancaster | Saint John |
| Reversing Falls Bridge | Route 100 | Lancaster: Route 100 | Saint John: Route 100 |
| Saint John Harbour Bridge | New Brunswick Route 1 | Saint John: Route 1 | Saint John: Route 1, New Brunswick Route 100 |