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Supplementary Project Mode(s):
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* Active Transportation * Bridge * Freight
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The 19th Street & Nation Road Intersection project is a key component of the greater transportation improvements needed to serve the new I-35 interchange at 19th Street. The interchange project includes a new bridge over I-35 and roadway improvements on both sides of the bridge (approximately 0.4 miles to the east and 0.3 miles to the west of the interchange). The 19th Street & Nation Road Intersection project will serve both motorists and freight as future development is anticipated near the new interchange. Multimodal facilities associated with the interchange project would also be extended through the 19th Street & Nation Road Intersection project including bicycle lanes, a shared-use path on one side of the roadway, and a sidewalk on the opposite side of the roadway in order to accommodate bicyclists, pedestrians, and mobility aid users.
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Project Description: |
The City of Kearney is a rapidly growing community with a single highway interchange at I-35 and Route 92. To reduce congestion and vehicular delay associated with the existing interchange, the City and MoDOT are in the process of implementing a new Diverging Diamond Interchange approximately one mile to the south at I-35 and 19th Street. Regional connectivity of 19th Street is limited as the corridor does not currently extend across I-35. Therefore, to connect to the new interchange, 19th Street (approximately 0.4 miles to the east and 0.3 miles to the west of the interchange) will be improved to a three-lane urban roadway to increase capacity for motorists and freight. Improvements will also include bicycle lanes, a shared-use path on the south side of the roadway, and a sidewalk on the north side of the roadway in order to accommodate bicyclists, pedestrians, and mobility aid users. Construction of this interchange project is anticipated to begin in Fall 2021.
The interchange project does not include improvements to the 19th Street and Nation Road intersection that is located approximately 0.5 miles west of the new interchange. The interchange project does not connect to the 19th Street and Nation Road intersection, and the proposed project is required to connect the transportation network. The existing intersection is a four-leg, stop-controlled intersection of two two-lane, rural corridors. The east leg of the intersection (19th Street) is currently unpaved. The proposed 19th Street & Nation Road Intersection project would construct a four-leg, single-lane roundabout to increase safety and capacity for motorists and freight. Multimodal facilities would also be extended through the intersection including bicycle lanes, a shared-use path on one side of the roadway, and a sidewalk on the opposite side of the roadway in order to accommodate bicyclists, pedestrians, and mobility aid users. On-street bicyclists would use bicycle lanes prior to entering the roundabout, navigate the roundabout using the same path as motorists, and then re-enter bicycle lanes upon exiting the roundabout. The 19th Street & Nation Road Intersection project is a key component of the greater transportation improvements needed to serve the new I-35 interchange.
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Scope: |
The 19th Street & Nation Road Intersection project includes a four-leg, single-lane roundabout to increase safety and capacity for motorists and freight. The roundabout is slightly offset to the north of the existing 19th Street/144th Street and Nation Road intersection. The intersection project limits extend approximately 0.1 miles on each leg of the roundabout in order to align with each roadway segment. In particular, the east leg of the roundabout (19th Street) connects to the interchange project to provide connectivity between I-35 and Nation Road. Each leg of the roundabout has bicycle lanes, a shared use path on one side of the roadway, and sidewalk on the opposite side of the roadway in order to accommodate bicyclists, pedestrians, and mobility aid users. Other significant scope items include right-of-way acquisition due to the offset alignment, three driveways to provide access to nearby properties, lighting, and landscaping.
Several safety countermeasures are incorporated into the project, such as:
a) Roundabout reduces vehicular conflict points, particularly for left-turn crashes;
b) Roundabout approach leg medians reduce the potential for head-on crashes;
c) Roundabout reduces vehicular speeds to provide traffic calming;
d) Roundabout truck apron provides navigation for larger vehicles such as trucks;
e) Bicycle lanes provide a dedicated facility for on-street bicyclists separate from vehicular traffic;
f) Shared-use path with buffer provides a dedicated facility for off-street bicyclists and pedestrians;
g) Sidewalk with buffer provides a dedicated facility for pedestrians;
h) Crosswalks with median refuge enable pedestrians to cross one direction of traffic at a time; and
i) Lighting increases visibility and comfort for all users.
Expected outcomes of the 19th Street & Nation Road Intersection project include enhanced intersection safety, increased capacity to serve the new I-35 interchange, and increased economic development associated with benefits realized by improved interstate connectivity.
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