Boston’s Bike Lanes Are Driving a Cycling Surge

A Test of Demand, Not Just Design

Boston’s push to expand protected bike lanes is showing measurable results. A new city report examining changes from 2023 to 2024 finds that bicycle trips increased significantly across several corridors, while motor vehicle traffic declined modestly in nearby areas. The findings follow the rollout of the Better Bike Lanes project, a key plank of Mayor Michelle Wu’s election platform aimed at improving cycling infrastructure citywide.

By fall 2024, Boston had installed a network of protected bike lanes, bikeways, and redesigned crossings. City officials then set out to determine whether the perceived demand for safer cycling routes was real — and the data suggests it was.

Big Gains in Key Neighborhoods

Results varied by location, but some areas saw dramatic increases in bike usage. On Boylston Street in the Back Bay, observed daily bike trips jumped 83 percent, rising from 615 to 1,127 after protected lanes were installed and separated from traffic with metal bollards. Downtown on Milk Street, nearly 200 more cyclists were recorded using the new single-direction bike lane than before, when riders had to share space with cars.

Elsewhere, Western Avenue in Allston and Brighton saw an average daily increase of more than 200 bikes, representing a 51 percent rise. Even more modest corridors showed growth, such as South Street in Brighton, where bike traffic increased 22 percent.

Fewer Cars, Without Added Congestion

The study also examined whether cyclists were leaving cars behind. Near Fairfield Street, traffic flows dropped by about 9 percent between September 2022 and September 2024. Near Arlington Street, the decrease was even more pronounced at 14 percent, suggesting some drivers are choosing bikes instead.

Supporters Call It Evidence-Based Policy

Cycling advocates say the results reinforce the value of protected bike infrastructure. Boston Cyclists Union Executive Director Tiffany Cogell said the lanes are reducing crashes, improving predictability, and expanding mobility options without increasing congestion. For city planners, the report offers data-driven insight into how street design can influence travel behavior.