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About the McHenry Avenue Corridor

The McHenry Avenue corridor runs south/north and serves as a direct link between the Cities of Modesto and Escalon, and also connects State Routes 108 and 120. Within the corridor, the Stanislaus River Bridge spans from Stanislaus County to San Joaquin County and ends at the intersection of McHenry Avenue and East River Road. The bridge is only one of three river crossings in the southeast region of the County with the other two being Highway 99 to the west and Santa Fe Road to the east. Unlike the other two river crossings, the central location of the McHenry Avenue corridor significantly reduces the commute distance between the Cities of Modesto and Escalon.

The Stanislaus River and SSJID Canal bridges were originally constructed 58 and 86 years ago (as of 2017), respectively, and have exceeded their original design life. In addition, the increased traffic volumes through the intersection of McHenry Avenue / River Road over the past years have impacted traffic circulation and air quality. In April of 2016, Public Works of San Joaquin County installed a temporary roundabout to relieve existing traffic congestion; however, significant additional improvements are required to accommodate future growth.

What is the McHenry Avenue Corridor Improvements Project?

The McHenry Avenue Corridor Improvements project will enhance safety,
inter-regional traffic circulation, and air quality. The improvements will include:

  • 1.1 miles of widening along McHenry Ave from 1,487 feet south of River Road to 190 feet south of Jones Road.
  • Stanislaus River and SSJID Canal Bridges will be replaced with wider and safer bridges, satisfying current seismic design standards.
  • Installation of a two-way left turn center lane to facilitate turns into and out of driveways on McHenry Ave.
  • Increased width of roadway shoulders to accommodate alternative travel modes, including bicyclists.
  • Installation of a traffic signal on McHenry Ave and River Rd that will accommodate existing and future traffic demands.

Construction began in April of 2017 and is expected to be completed by mid-2020. Traffic delays should be expected for the entire duration of the project. Delay times may vary depending on the construction activity of the day.

Stay informed about the project’s progress by subscribing to text and/or email updates or by frequently visiting the construction updates and traffic information pages of this website.

Project Maps


The project was awarded on February 28th, 2017 to Myers & Sons Construction in the amount of $21,934,144.50.

Funding for this project will be provided from the following programs/sources:

  • Federal Highway Bridge Program
  • Congestion Mitigation & Air Quality Program
  • Regional Surface Transportation Program
  • Seismic Proposition 1B Program
  • Measure K Local Street Repair Funds