From the York Region (The Regional Municipality of York):

Intermittent overnight closures begin on Monday, March 24, 2025 on Stouffville Road, between Bayview Avenue and Leslie Street, in the City of Richmond Hill to ensure safe crossing of the endangered Jefferson Salamanders.

Closures will only occur when it rains as the salamanders only make the passage during rain events.

Learn more by visiting https://www.york.ca/newsroom/news/endangered-species-jefferson-salamander-return-summer-breeding-grounds