The US-89 Farmington to I-84 project is needed to address travel demand and improve safety along the corridor. By 2040, the traffic volume will increase by 35%, from 37,700 to 50,800 vehicles per day. This will exceed the current capacity of US-89. Also, more than 400 crashes have occurred in the last 3 years, 10 resulting in serious injury or fatality. The purpose of the study is to find a solution that accommodates the increase in traffic, maintains access, and enhances safety.
Currently, US-89 operates using a series of traffic signals at many of the intersections. The signals have become the cause of significant traffic congestion in recent years. This congestion also exists for cross traffic moving east-west. If added, grade-separated interchanges along US-89 from Farmington to I-84 will allow traffic to move more freely and at consistent speeds. In addition, eliminating traffic signals improves safety by reducing the risk of accidents.
Crash rate data shows that replacing intersections with grade-separated interchanges reduces the frequency and severity of accidents. Recent statistics show that the crash rate on a road like US-89 with traffic signals is 4.5 times higher than with interchanges. The rate of severe crashes is also 3.5 times higher. By removing signalized intersections and replacing them with grade-separated interchanges, the number of possible vehicle conflicts decreases substantially, resulting in fewer accidents.
Grade separation is a crossing of two roadways at different heights (grades). A bridge which spans roads (as an overpass) is a grade separation structure. The grade separation allows traffic on at least one road to pass through the junction without conflicts to any other traffic stream. A grade-separated interchange is an overpass with connecting ramps for access to and from US-89 mainline.
Grade-separated interchanges are being proposed at 200/400 North, Oak Hills Drive, Gordon Avenue, and Antelope Drive. Overpasses are being proposed at Nicholls Road and Crestwood Drive.
In the last few years, UDOT made some interim improvements along US-89 to relieve congestion and improve safety in areas near Antelope Drive and Nichols Road. At that time, funding wasn’t identified for the major corridor improvements now being contemplated. The proposed project is a long-term solution that will require reconstruction of much of the recent improvements.
Current and future traffic volumes are given below:
Cross Road with Annual Average Daily Traffic (AADT)
Estimated 35% Increase
|200 S Fruit Heights||32,745||45,843|
|200 N Kaysville||33,440||46,816|
|Mutton Hollow Rd||33,225||46,515|
|Oak Hills Dr||33,445||46,823|
|SR-193 Hill Field Rd||45,729||63,861|
|SR-60 – South Weber Dr.||49,785||69,699|
73% of traffic is through traffic.
Though UDOT is studying various build alternatives, it may ultimately decide to do nothing. If UDOT opts for a no-build alternative, traffic modeling predicts that the travel times between Fruit Heights and I-84 will increase from 11 minutes to 48 minutes. In that event, the fastest way from Main Street (Cherry Hill Interchange) to SR-193 would be to travel through Main Street in Kaysville to Fairfield Road and up SR-193.
If a build option is selected, the project is currently scheduled for construction beginning in 2019. However, firm dates are not set pending the outcome of the State Environmental Study.
UDOT will only acquire the Right of Way (ROW) necessary to build and safely operate the expanded roadway, frontage roads, and interchanges. During the design phase, the project team will evaluate the potential impacts to your property and determine if those impacts will require acquisition; however, not all properties located adjacent to US-89 in the project area will be impacted.
If some of your property is needed for the project, a project team member will contact you to provide information and answer your questions. For all property acquisitions, UDOT follows state and federal relocation processes and procedures. A Right of Way brochure outlining the entire process can be obtained by sending a request to email@example.com.