ST. GEORGE — Access to state route Route 9 from southbound Interstate 15 at Exit 16 will be closed Monday and Tuesday night.
The closure will accommodate the demolition of the outside lanes of the I-15 overpass that spans SR-9, according to the Utah Department of Transportation.
The inside lanes were demolished last month as part of ongoing work to improve traffic flow through Exit 16 with upgraded infrastructure, which includes replacing the original bridge structure.
The closure is also in place for the safety of the traveling public and construction crews.
“We encourage drivers to be alert, slow their speeds, and obey all construction signage through the construction zone,” UDOT said a recent project update.
- Monday, 8 p.m. to 7 a.m.
- Tuesday, 8 p.m. to 7 a.m.
Motorists on southbound I-15 who need to use SR-9 are advised to travel to the Washington Parkway/Exit 13 interchange and follow it to Telegraph Street, which connects to SR-9.
During the closures, I-15 will be reduced to one travel lane in each direction in the area of construction.
The project began Feb. 11 and is anticipated to run through November. It is the latest in a series of improvements recommended by a 2013 study that focused on the I-15 corridor from the state border to milepost 16.
Improvements to Exit 16 include:
- Addition of a second lane to the I-15 northbound exit ramp to eastbound SR-9.
- Addition of a second lane to the SR-9 westbound entrance ramp to southbound I-15.
- Addition of another lane on westbound SR-9 between Coral Canyon interchange and I-15 entrance ramp.
- Addition of a third southbound lane on I-15 between SR-9 and Exit 13.
- Improvement of curves and speeds on all ramps.
- Reconstruction to widen and lengthen bridges on I-15 over SR-9.
- Extension of northbound I-15 truck lane through the interchange.
The project is estimated to cost $29 million.
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