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PROJECT DESCRIPTION
MOT-SR49-1073
PID 104849
ODOT proposes to improve the I70/State Route 49 interchange in Clay Township, Montgomery
County. State Route 49 is currently a four-lane divided freeway from its interchange with
Interstate 70 to US 40. State Route 49 is expected to have an average daily traffic of
approximately 15,000 vehicles per day in the design year (2036).
In April 2014, ODOT completed a Safety Study of State Route 49, from SLM 10.73 to SLM
12.00). This corridor includes the interchange ramps and the State Route 49 intersections with
Brookville-Salem Road, Pleasant Plain Road, and the intersection with US 40. During the study
period (2010 to 2014), the corridor experienced 72 crashes, including one fatality (on the
southbound State Route 49 ramp to eastbound Interstate 70) and 27 injuries (38% of crashes).
Of these, 14 of the crashes occurred at the intersection of State Route 49 and Brookville-Salem
Road. The Safety Study noted that, due to the separation of the northbound and southbound
travel lanes, this intersection functions as two separate intersections.
Within the project corridor, the Safety Study indicated three areas where there are clusters of
crashes: The intersections of Brookville-Salem Road and State Route 49 and the southbound
State Route 49 ramp onto eastbound Interstate 70. The Safety Study concluded that the primary
contributing factors to these crashes included vehicle speed, geometry, and driver inattention.
Under the proposed project, the following improvements will be made:
SR 49 will be transitioned from a four-lane divided highway to a two-lane undivided
highway between Interstate 70 and the approach to Pleasant Plain Road. The existing
southbound SR 49 pavement will be utilized for the undivided roadway. The existing
southbound SR 49 bridge over Razor Run will be widened to accommodate the modified
cross-section.
The existing separated northbound travels lanes of SR 49 from Interstate 70 to the approach
to Pleasant Plain Road will be removed. The northbound SR 49 bridge over Razor Run will
be removed.
The existing separated northbound and southbound intersections of SR 49 and Brookville-
Salem Road will be consolidated into a single intersection. The intersection will be
signalized.
On the approach to Pleasant Plain Road, SR 49 transitions back to a divided roadway. The
northbound and southbound lanes of SR 49 will be restriped as single through lanes from
Pleasant Plain Road to the existing two-lane undivided roadway north of US 40.
The existing SR 49 interchange with Interstate 70 will be converted to a half diamond, with
T-intersections at the ramps. The westbound I-70 ramp to SR 49 will be stop-controlled.
The pavement for the existing flyover ramps will be removed. The eastbound ramp bridge
over Razor Run will be left in place.
Consideration was given to consolidating the northbound and southbound travel lanes from the
approach to Pleasant Plain Road to the project’s terminus at the existing two-lane SR 49 corridor.
However, traffic analysis indicates that level of service at the Pleasant Plain Road intersection
degrades when this bifurcated intersection is consolidated.
Construction is expected to occur in the summer of 2019 and require approximately six months.
Traffic on Interstate 70 will be maintained consistent with the Permitted Lane Closure Policy.
One lane in each direction is expected to be maintained on SR 49.
In general, the project will occur within the existing public right-of-way. Minor temporary or
permanent acquisition of up to 0.2-acre may be required from the northwest quadrant of SR 49 at
Brookville Salem Road, to allow for construction and the new signalized intersection.
The project is located in a predominantly agricultural area, with scattered commercial and
residential properties dating to the mid-1900s. Within the Census Blockgroups that include the
project corridor, minorities represent 1% to 17% of the population; individuals in poverty
represent 3% to 9% of the population.
Along the project corridor, there are no National Historic Landmarks, sites listed or known
eligible for the National Register of Historic Places, or sites for which Ohio
Historic/Archaeological Inventory forms have been completed.
The project will require work within Razor Run, to allow for the widening of the existing
southbound SR 49 bridge and the removal of the existing northbound SR 49 bridge. Razor Run
is a warmwater habitat with a drainage area of approximately 3.5 square miles at the project
location. Wetland areas and suitable wooded habitat are present within the project area,
primarily at the SR 49 bridges. Multiple potentially jurisdictional ditches are present within the
corridor and may be impacted by construction. Portions of the project are located within the
designated special flood hazard area associated with Razor Run.
The project is funded federal and state System Transportation and Safety funds. Environmental
clearance is scheduled for 12/01/2017. The project is expected to award in April 2019.
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MONTGOMERY COUNTYUnincorporated Places
Airports
Mile Markers 2 mile
Interstate Routes
Proposed Interstate Routes
U S Routes
Proposed U S Routes
State Routes
Proposed State Routes
Ramps
County Roads
County Sub Division Streets
Proposed County Roads
County Roads (Right of Way only)
Township Roads
Township Sub Division Streets
Township Roads (Right of Way only)
Proposed Township Roads
Municipal Streets
Railroads
County Boundary
City Boundary
Township Boundary
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Revised: April - 2015
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MOT-49-1073PID 104849
Trotwood, Ohio Quadrangles
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