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Franklin County Engineer

As a local public works agency headquartered in Columbus, Ohio, the Franklin County Engineer's Office is responsible for the maintenance and construction of 271 miles of county roadway and 351 county bridges, as well as upkeep of all county ditches, drains, retention basins, and other storm water facilities within the right-of-way of county roads in unincorporated areas. To meet the continuing development and infrastructure needs of Franklin County, the Engineer's Office utilizes the latest technologies for determining and maintaining roadway centerlines and boundaries; retracing and setting new monuments for original public land surveys; preparing geographic information system mapping for real estate tax assessments; and establishing precise countywide horizontal and vertical control to maintain uniformity in construction, surveying, and mapping.
Franklin County Engineer
Franklin County Engineer3 days ago
Celebrating Black History Month! This week we highlight Richard Spikes, an African American inventor who was a trailblazer in the automotive industry in the early 20th century. His improvements and inventions were precursors to some of the safety features used today. #BHM
Franklin County Engineer
Franklin County Engineer4 days ago
Happy 207th Birthday to the City of Columbus - City Hall! We are thankful for the partnership and collaboration that we’ve had over the years. Your growth looks good on you! #AgeAintNothingButANumber
Franklin County Engineer
Franklin County Engineer4 days ago

The following roads are now open:
Rager Rd. between Groveport Rd. and Bixby Rd.
Groveport Rd. between Lithopolis Rd. and Gender Rd.
Franklin County Engineer
Franklin County Engineer added 4 new photos.5 days ago
Today, our Bridge Design Department took members of The Columbus Dispatch on a bridge inspection demonstration of our Trabue Road bridge. They got a chance to see the bridge from a different perspective. Look for the story in an upcoming edition of the Columbus Dispatch .
Franklin County Engineer
Franklin County Engineer5 days ago
Meet, Mitch Colanero. He’s worked at FCEO for 2 years as our night security officer. Mitch greets us with a smile every morning before going home. Outside of work, he’s spending time with family, hunting, landscaping, or cooking. Thanks Mitch for being #TeamFCEO! #WorkerWednesday
Franklin County Engineer
Franklin County Engineer6 days ago
Due to the recent rain events, the following roads are closed due to high water:
Rager Rd. between Groveport Rd. and Bixby Rd.
Groveport Rd. between Lithopolis Rd. and Gender Rd.

Please be cautious when traveling in these areas.

Franklin County Engineer's Office
(614) 525-3030



We want everyone to feel confident, be secure, and to “keep in the loop” with their safe driving practices as they travel modern roundabouts.

To help the public become more familiar with how to drive a roundabout, we’ve created this user guide that shows the various traffic patterns, rules, and general instructions that we hope everyone will follow.

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What is a modern roundabout?

It is a one-way circular intersection with yield control of all entering traffic. Vehicles circulate counter-clockwise at speeds around 20 M.P.H. The lane use is very similar to a typical four-way intersection except for a slight circular adjustment.

Seven rules for safely driving roundabouts:
  • Slow down
  • Get in the correct lane before entering the roundabout:
    • Use the right lane for turning right or going straight (same as a conventional intersection).
    • Use the left lane for going straight or turning left (same as a conventional intersection).
    • Use the left lane to make a U turn.
  • Look for and yield to pedestrians in the crosswalk before entering the roundabout.
  • Yield to all circulating traffic when entering the roundabout. Even if there are two lanes in the roundabout, yield to both.
  • Drive counter-clockwise, following the one-way traffic pattern.
  • Do not change lanes within the roundabout.
  • Look for and yield to pedestrians in the crosswalk upon exiting the roundabout.
Why build a modern roundabout instead of a typical intersection?

Modern roundabouts are safer than traditional intersections, which have more conflict points and operate at higher speeds.

Studies have shown that roundabouts provide nearly an 80 percent reduction in injury accidents since the circular layout dramatically reduces the likeliness of head-on or broadside collisions.

What are some of the other benefits of modern roundabouts?
  • Traffic from all directions is slowed down to the same speed, giving motorists more time to judge and react to traffic.
  • Shorter and better-planned crosswalks are located away from the busy intersection.
  • There is a reduction in pollution and fuel use since there is less idle time for motorists.
  • Slower speeds and fewer stops and starts result in less traffic noise.
  • There are no expensive traffic signals to install or maintain.