Lieutenant Governor Robert Duffy announced the beginning of the "Peace Bridge U.S. Widening Approach" Wednesday.
The $1.3 million project will add 200,000 square feet of approach space for U.S. bound vehicles.
It's also expected to improve the flow of traffic.
Construction on Phase 1 of the project is expected to begin in the Fall.
The entire widening project will cost about $13 million.