Buttles Street is an MDOT corridor and changes made to it fall within their jurisdiction and control. Once plans are developed for the corridor, MDOT will coordinate the project and ultimately contract for the changes through an open bidding process.
The cost of any work to be done in the corridor is ultimately the responsibility of MDOT, but there are both federal and local shares of the project cost that would be the responsibility of the City of Midland. Typical MDOT projects have required a 2-3% city match previously.
The timeline to start any possible work within the Buttles Street corridor is not known at this time. Once a project design is decided upon, cost estimates will need to be prepared and both MDOT and the City of Midland will need to budget funds for the project. This process is likely to take several years given State of Michigan and City of Midland budgeting processes.