State Route 109 Portland Bypass

Sumner County


The Tennessee Department of Transportation (TDOT), in cooperation with the Federal Highway Administration (FHWA), announces the availability of the approved Finding of No Significant Impact for the State Route 109 (SR-109) (Portland Bypass) Project.

The SR-109 (Portland Bypass) Project includes the construction of a four-lane, partial access controlled facility extending west of downtown Portland from existing SR-109 south of SR-76, northward to existing SR-109 north of downtown Portland.  The project length 7.2 miles, and the right-of-way (ROW) width is approximately 250 feet.

Description of the Selected Alternative

Outlined below are the specific design features of the Selected Alternative:

Proposed Portland Bypass Mainline

The typical section for the Selected Alternative’s mainline includes four 12-foot traffic lanes, 12-foot outside shoulders (10-foot paved, 2-foot gravel), and a 48-foot depressed grass median, which includes 6-foot inside shoulders (4-foot paved, 2-foot gravel), within an approximate 250-foot right-of-way. The design speed of the roadway would be 60 miles per hour (mph), with the posted speeds potentially being lower.

Proposed Flyover Ramp Connecting Existing SR-109 to the Southern End of Portland Bypass

A flyover ramp is proposed at the southern terminus of the project to provide unimpeded access for southbound traffic on the existing SR-109 merging with the SR-109 (Portland Bypass) traffic before continuing south on existing SR-109.

Proposed SR-52/Portland Bypass Interchange

A grade separated, partial folded diamond interchange is proposed at SR-52, with most ramps located south of SR-52.  The exit ramp from the southbound lanes of the SR-109 (Portland Bypass) to SR-52 would be located in the northwest quadrant of the interchange.

Proposed At-Grade Access Points

The Selected Alternative would include access via at-grade intersections for several local roads intersected by the SR-109 (Portland Bypass) route, including: SR-76, Jackson Road, Collins Road (west of bypass), College Street, T.G.T. Road, and Kenwood Drive (west of bypass).

At–Grade Access Points with New Connector Roads

  • Kirby Drive – Existing Kirby Drive would be extended westward to connect to the SR-109 (Portland Bypass) on a new alignment.  This connector would serve truck traffic traveling to and from the industrial/warehousing facilities located in the Kirby Drive vicinity, as well as residents and businesses within the northern sections of Portland.
  • Woods Road – A Woods Road connector would be constructed to shift the intersection of Woods Road southward to connect with the SR-109 (Portland Bypass) directly across from Kenwood Drive, providing a more perpendicular intersection than the current SR-109/Woods Road intersection.  The proposed Woods Road connector would also provide direct access to SR-109 (Portland Bypass) for a proposed fire station near the existing SR-109/Woods Road intersection.

The locations and types of traffic control features such as traffic signals and stop signs for intersecting roadways would be determined during the final design phase based on traffic projections and other design factors. 

Proposed SR-52 Widening and Sidewalk Construction

A section of SR-52 would be widened to five lanes from near West Market Street westward to west of the SR-52/SR-109 (Portland Bypass) interchange.  This widening is needed to accommodate an increase in traffic expected on that section of SR-52 once the SR-109 (Portland Bypass) is constructed.

Sidewalks would be considered for inclusion along a portion of SR-52 that is proposed to be widened as part of the overall SR-109 (Portland Bypass) project.  Sidewalks constructed between West Market Street and Searcy Lane would correspond with existing and planned sidewalks within the City of Portland.  Final plans for sidewalks would be determined during the final design phase and in coordination with local officials.

Purpose and Need

The primary purpose of the proposed project is to improve local, regional, and statewide mobility by improving traffic flow on the SR-109 corridor through Portland.  In addition to addressing concerns due to localized growth and inherent increased traffic, this project would provide regional transportation benefits by helping finalize long-term improvements to the SR-109 corridor between Interstate 40 (I-40) in Wilson County and Interstate 65 (I-65) in Robertson County.

Approved Environmental Assessment

The proposed project would be constructed in part with federal funding, and is therefore subject to the requirements of the National Environmental Policy Act (NEPA). An Environmental Assessment (EA) has been prepared to meet NEPA requirements.  The EA for the proposed project  was approved by the FHWA on September 14, 2015.  The EA can be downloaded for viewing here.

Notice of Availability-Finding of No Significant Impact

The TDOT is announcing the availability of a Finding of No Significant Impact (FONSI) environmental document for public inspection. The FONSI was approved by the FHWA on July 3, 2017 for the proposed SR-109 (Portland Bypass) from SR-109 near SR-76 to SR-109 north of downtown Portland, Sumner County.

The FONSI is available for viewing here.

Printed copies of the FONSI document are available for public inspection at the following locations:

Portland Public Library
301 Portland Blvd.
Portland, TN 37148
Phone: (615) 325-2279
Mr. Joe Deering, P.E.*
TDOT Region 3, Project Development Office
6601 Centennial Blvd.
Nashville, TN 37243
Phone: (615) 350-4300
Ms. Holly Cantrell*
TDOT, Environmental Division
505 Deaderick Street
Suite 900, James K. Polk Building
Nashville, TN 37243
Phone: (615) 741.3655

*Please call in advance of your arrival.