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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 Engineer
The lane reduction for bridge improvements on W. North Broadway over the Olentangy River between SR-315 N. On-Ramp/Ohio Health Parkway and Milton Avenue, initially scheduled to begin Monday, March 2, 2026, has been delayed to Monday, March 9, 2026. The projected completion date of August 1, 2026, remains unchanged, weather permitting.
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Franklin County Engineer
Franklin County Engineer
Today is Introduce a Girl to Engineering Day! Engineering shapes the roads, bridges, and infrastructure that connect our communities. This year’s theme, “Transform Your Future,” reminds us that engineering opens doors to opportunity, innovation, and impact. At the Franklin County Engineer’s Office, we’re proud to help inspire the next generation of engineers. #IntroduceAGirlToEngineeringDay
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Franklin County Engineer
Franklin County Engineer
Notice to Contractors: We are accepting bids on the CDBG Genesee Avenue Drainage Improvements from Parkwood Avenue to Perdue Avenue Improvement Project. Visit: https://www.bidexpress.com/solicitations for more information.
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Franklin County Engineer
Franklin County Engineer
Notice to Contractors: We are accepting bids on the Franklin County Engineer’s Office CDBG Sidewalk Improvements Project in Clinton Township and Franklin Township, Franklin County, Ohio. Visit: https://www.bidexpress.com/solicitations for more information.
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Franklin County Engineer
Franklin County Engineer
W. North Broadway over the Olentangy River will be reduced to one lane in each direction, between SR-315 N. On-Ramp/Ohio Health Parkway and Milton Avenue, beginning Monday, March 2, 2026, for bridge rehabilitation. The closure will last approximately one-hundred fifty-two (152) days, weather permitting.
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Franklin County Engineer
Franklin County Engineer
Walnut Street, at the intersection of Walnut Street and New Albany-Condit Road (SR-605), will be closed beginning Monday, March 2, 2026, for construction of a multi-lane roundabout. The closure will last approximately ninety (90) days, weather permitting.
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Franklin County Engineer's Office
970 DUBLIN ROAD
COLUMBUS, OHIO 43215
(614) 525-3030
fracoeng@franklincountyengineer.org
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Surveying, Mapping, & Records Department

Surveying, Mapping, & Records Department

Rettke, Tony

TONY RETTKE, P.S.

Director of Surveying and Tax Map

The Surveying, Mapping, and Records Department performs a variety of surveys to meet the continuing development and infrastructure needs of Franklin County. Use of a countywide network of horizontal and vertical control monuments and the satellite Global Position System (GPS) enables the most accurate surveys necessary for the design of construction projects and the definition of road centerlines, property limits, and county, municipal and township boundaries.

“It is the responsibility of the County Engineer to maintain a current set of property ownership maps. These maps assist the County Auditor in keeping an accurate tax base” (Ohio Revised Code Section 5713.09).

The County Engineer has an office and staff in the Franklin County Administration Building, located at 373 South High Street, 19th Floor, Columbus, Ohio.  This office is known as the Tax Map Division.  The primary function of this office is to produce a set of maps which will display the current property boundaries, ownership, transfer dates, parcel numbers, acreage or lot number and subdivision names, as compiled from the information available from the Franklin County Records.  The following is a brief list of the Tax Map Division responsibilities and duties:

  • Update and maintain an accurate set of maps for the County Auditor
  • Check all real estate transfers for compliance to the “Transfer and Conveyance Standards of the Franklin County Auditor and the Franklin County Engineer” as well as the “Minimum Standards for Boundary Surveys”.
  • Check annexation plats for the County Commissioners regarding content and accuracy of the legal description and plat.
  • Check subdivision plats for compliance to the “Transfer and Conveyance Standards of the Franklin County Auditor and the Franklin County Engineer” as well as the “Minimum Standards for Boundary Surveys”.
  • Check Condominium Declarations for compliance to the “Transfer and Conveyance Standards of the Franklin County Auditor and the Franklin County Engineer” as well as the “Minimum Standards for Boundary Surveys”.
  • Maintain and create a comprehensive Highway Map for the entire county per Administrative Code.
  • Issue addresses for all new construction in the unincorporated areas of Franklin County.
  • Assist with the Location Based Response System (LBRS) initiative.
  • Manages Franklin County engineering and surveying records