A provincial highway and two interregional highways cross La Baie.
The main road, Highway 170, runs from Highway 70 (which junctions with Highway 175) to Chicoutimi and Port-Alfred.
It becomes an interregional highway along Ha!
Ha!
Bay toward lower Saguenay.
The other interregional highway, the Route du petit Parc (Highway 381), begins at Port-Alfred and heads toward Ferland-et-Boilleau.
These interregional roads both connect the Saguenay-Lac-Saint-Jean region to Charlevoix.
The only intermunicipal highway is Saint-Jean-Baptiste Boulevard, which becomes Grande-Baie Nord Boulevard (Highway 372) on the eastern edge of the borough.
It connects Rivière-du-Moulin in Chicoutimi to Bagotville.

Automobile traffic in the borough passes mostly on Highway 170.
The stretch between Bagotville Airport and Grande-Baie is used by 10,000 automobiles daily.
Between Grande-Baie and lower Saguenay, it drops to 2,500 to 5,000 automobiles.
The Petit Parc (Highway 381) in direction of Ferland-et-Boilleau is used by 1,000 to 2,500 vehicles per day and the ligne Bagot (Grande-Anse Road) between Bagotville Airport and the Grande-Anse Maritime Terminal is travelled by fewer than 1,000 vehicles a day.
In 2000, 5% of vehicles from outside the region came from the Laurentian Wildlife Reserve (Highway 175) and 30% from lower Saguenay using Highway 170.
Over 1,000 heavy vehicles drive between La Baie and Chicoutimi every day using only this road.
Fewer than 500 heavy vehicles a day come from lower Sagenay and Ferland-de-Boilleau.

Public transportation in the borough is provided by the City-owned Société de transport du Saguenay (STS).
Two bus lines link the Chicoutimi and La Baie terminals: the Via Saint-Jean-Baptiste line that uses Highway 372 and the Via Aéroport that goes by Highway 170.
Three bus lines from the La Baie terminal serve the borough year-round and one during the winter.
The Des Érables via Centre d'achats line travels to the Bagotville sector, the Polyvalente de La Baie via Avenue du Parc to Port-Alfred, and the Boulevard de la Grande-Baie Sud to Grande-Baie.
The fourth bus line, Chemin Saint-Louis, travels along Saint-Louis Road during the wintertime.

Cyclists can travel through La Baie using Route Verte 8.
The bicycle path enters La Baie by De la Grande-Baie Nord Boulevard and reaches Laurier-Simard Quay, where it stretches six kilometres along Ha!
Ha!
Bay.
A provincial highway and two interregional highways cross La Baie. The main road, Highway 170, runs from Highway 70 (which junctions with Highway 175) to Chicoutimi and Port-Alfred. It becomes an interregional highway along Ha! Ha! Bay toward lower Saguenay. The other interregional highway, the Route du petit Parc (Highway 381), begins at Port-Alfred and heads toward Ferland-et-Boilleau. These interregional roads both connect the Saguenay-Lac-Saint-Jean region to Charlevoix. The only intermunicipal highway is Saint-Jean-Baptiste Boulevard, which becomes Grande-Baie Nord Boulevard (Highway 372) on the eastern edge of the borough. It connects Rivière-du-Moulin in Chicoutimi to Bagotville.
Automobile traffic in the borough passes mostly on Highway 170. The stretch between Bagotville Airport and Grande-Baie is used by 10,000 automobiles daily. Between Grande-Baie and lower Saguenay, it drops to 2,500 to 5,000 automobiles. The Petit Parc (Highway 381) in direction of Ferland-et-Boilleau is used by 1,000 to 2,500 vehicles per day and the ligne Bagot (Grande-Anse Road) between Bagotville Airport and the Grande-Anse Maritime Terminal is travelled by fewer than 1,000 vehicles a day. In 2000, 5% of vehicles from outside the region came from the Laurentian Wildlife Reserve (Highway 175) and 30% from lower Saguenay using Highway 170. Over 1,000 heavy vehicles drive between La Baie and Chicoutimi every day using only this road. Fewer than 500 heavy vehicles a day come from lower Sagenay and Ferland-de-Boilleau.
Public transportation in the borough is provided by the City-owned Société de transport du Saguenay (STS). Two bus lines link the Chicoutimi and La Baie terminals: the Via Saint-Jean-Baptiste line that uses Highway 372 and the Via Aéroport that goes by Highway 170. Three bus lines from the La Baie terminal serve the borough year-round and one during the winter. The Des Érables via Centre d'achats line travels to the Bagotville sector, the Polyvalente de La Baie via Avenue du Parc to Port-Alfred, and the Boulevard de la Grande-Baie Sud to Grande-Baie. The fourth bus line, Chemin Saint-Louis, travels along Saint-Louis Road during the wintertime.
Cyclists can travel through La Baie using Route Verte 8. The bicycle path enters La Baie by De la Grande-Baie Nord Boulevard and reaches Laurier-Simard Quay, where it stretches six kilometres along Ha! Ha! Bay.
La Baie