Related Links: Construction Updates

Bypass 4 Widening Work To Begin This Spring!

After years of planning, the widening of Bypass 4 through Fairfield, Hamilton and Fairfield Township is set to become a reality beginning this year. Already, relocation of utilities has begun, with road crews ready to begin construction in the spring. The first segment of the roadway to see construction will be the Tylersville Road & Bypass 4 intersection and the segment of the Bypass adjacent to that intersection. The City of Fairfield section from the south end of the Bypass from State Route 4 to just south of Symmes Road will begin construction shortly after the Tylersville phase. Significant improvements to the intersection with Hamilton-Mason Road will follow in the summer. Construction of the Symmes Road intersection is planned for the fall.

Through cooperative planning by the City of Fairfield and Butler County Transportation Improvement District (TID), the SR 4 Bypass will be widened to four lanes from SR 4 to SR 129. A six lane section will run from Symmes Road to Tylersville Road. A "superstreet" intersection design will be utilized for the intersections of the Bypass with Hamilton-Mason, Tylersville and Symmes Roads.

Within the City of Fairfield, the intersection of the Bypass and Port Union Road will be widened; the intersection of the Bypass with State Route 4/Ross Road will be modified to utilize a new "diversion road" that will split the traffic between multiple intersections, improving the flow of traffic. More information on this design will be available at the City’s website once detailed drawings are completed.

In addition to the widening between SR 4 and SR 129, the TID is working on a potential plan for lanes north of Rt. 129. The initial widening, however, will only involve the Bypass to the south of SR 129.

Bypass 4 Overview

 • 5 Construction Phases

Bypass 4 at Port Union

 • Bypass 4 at Port Union - Before & After

Bypass 4 at Route 4 (Dixie Highway)

 • Bypass 4 at Route 4 - Before
 • Bypass 4 at Route 4 - After
   Traffic Flows
 • Bypass 4 at Route 4 - Ross to Route 4
 • Bypass 4 at Route 4 - Route 4 to Bypass 4
 • Bypass 4 at Route 4 - Route 4 to Ross
 • Bypass 4 at Route 4 - Bypass 4 to Route 4
 • NEW - Video Animations