State Route 178 (SR-178) is a
state highway
A state highway, state road, or state route (and the equivalent provincial highway, provincial road, or provincial route) is usually a road that is either Route number, numbered or maintained by a sub-national state or province. A road numbered ...
in the U.S. state of
Utah
Utah is a landlocked state in the Mountain states, Mountain West subregion of the Western United States. It is one of the Four Corners states, sharing a border with Arizona, Colorado, and New Mexico. It also borders Wyoming to the northea ...
. Spanning just in
Payson, it connects
Interstate 15
Interstate 15 (I-15) is a major Interstate Highway in the Western United States, running through Southern California and the Intermountain West. I-15 begins near the Mexican border in San Diego County and stretches north to Alberta, Ca ...
to
SR-198.
Route description
State Route 178, a
minor arterial
An arterial road or arterial thoroughfare is a high-capacity urban road that sits below highways on the road hierarchy in terms of traffic flow and speed. The primary function of an arterial road is to deliver traffic from collector roads to high ...
connector, starts at Interstate 15's southbound
ramp
An inclined plane, also known as a ramp, is a flat supporting surface tilted at an angle from the vertical direction, with one end higher than the other, used as an aid for raising or lowering a load. The inclined plane is one of the six clas ...
for exit 248, a
diamond interchange
A diamond interchange is a common type of road junction, used where a controlled-access highway crosses a minor road.
Design
The freeway itself is grade separation, grade-separated from the minor road, one crossing the other over a bridge. ...
.
The route proceeds east on 800 South, over the interchange, continuing through Payson until terminatining at SR-198.
History
State Route 178 was added to the state highway system in 2000 in exchange for transferring ownership of the western portion of
SR-147 from the
Utah Department of Transportation
The Utah Department of Transportation (UDOT) is an agency of the state government of Utah, United States; it is usually referred to by its initials UDOT (pronounced "you-dot"). UDOT is responsible for approximately 5,900 miles (9,495 kilomet ...
to the city of Payson, as SR-178 connected to Interstate 15 and would be a more appropriate road for the state highway system.
No changes have been made to the highway since.
Major intersections
References
{{DEFAULTSORT:State Route 178
178
Year 178 ( CLXXVIII) was a common year starting on Wednesday of the Julian calendar. At the time, it was known as the Year of the Consulship of Scipio and Rufus (or, less frequently, year 931 ''Ab urbe condita''). The denomination 178 for this ...
178
Streets in Utah