This is a list of bridges and crossings over the Niagara River in order from Lake Erie downstream (generally northward) to Lake Ontario. Bridges and crossings marked * cross branches of the river within the United States, while those marked † cross within Canada. All others cross the full river and connect the U.S. and Canada. The endpoints of each bridge or crossing are shown in order from right to left facing downstream.
| County(ies) | Crossing | Carries | Location | Coordinates |
|---|---|---|---|---|
| Erie-Niagara RM | Peace Bridge | Queen Elizabeth Way | Buffalo, NY - Fort Erie, ON | |
| Erie-Niagara RM | International Railway Bridge | Canadian National Railway freight trains | ||
| Erie | I-190/NY 324 | Tonawanda - Grand Island, NY | ||
| Erie-Niagara | I-190 | Niagara Falls - Grand Island, NY | ||
| Niagara |
| First Street | Mainland - Goat Island (Niagara Falls, NY) | |
| Niagara |
| Footpath | Goat Island - Three Sisters Island (Niagara Falls, NY) | |
| Niagara |
| Road for Niagara Scenic Trolley (not open to cars) | Mainland - Goat Island (Niagara Falls, NY) | |
| Niagara |
| Footpath | Luna Island - Goat Island (Niagara Falls, NY) | |
| Niagara-Niagara RM | Rainbow Bridge | / - | Niagara Falls, NY - Niagara Falls, ON | |
| Niagara-Niagara RM | Michigan Central Railway Bridge | Disused (was Canadian Pacific Railway) | ||
| Niagara-Niagara RM | Whirlpool Rapids Bridge | Road (for NEXUS users only) and Amtrak/Via passenger trains | ||
| Niagara RM | †Whirlpool Aero Car | Scenic cable car across Niagara Whirlpool | Niagara Parkway at Victoria Avenue, north of Niagara Falls, Ontario | |
| Niagara-Niagara RM | Lewiston-Queenston Bridge | I-190 - Highway 405 | Lewiston, NY - Queenston, ON | |