Here are some of the most recent changes in the I-15 proposal, according to the Utah Department of Transportation and consultants Parsons, Brinckerhoff, Quade & Douglas:
10600 South interchange: Plans have been made to lower 10600 South and raise the railroad tracks over 10600 South to keep trains from stopping east-west traffic.9000 South interchange: A single-point interchange is proposed, and the frontage roads would remain as they are, except left turns between the frontage roads and 9000 South would be prohibited. The traffic signals at the intersections of the frontage roads and 9000 South would be removed. Local traffic circulation would be enhanced on two new roads that connect the frontage road to Monroe Street east of I-15 and one new road that connects 300 West to 500 West on the west side of I-15. The railroad tracks would be raised to go over 9000 South, and 9000 South would be widened between I-15 and 500 West.
7200 South interchange: A single-point interchange is still included in the plan and the frontage road on the east side of I-15 would be realigned to the east to intersect 7200 South at Cottonwood Street.
1-215: The ramps between I-15 and I-215 would be widened and modified.
5300 South interchange: A single-point interchange and realignment of 300 West are planned. Also, 5300 South would need to be widened on the south side between 1-15 and 300 West.
4500 South interchange: A single-point interchange and realignment of 300 West are planned.
3300 South interchange: A single-point interchange and the widening of 3300 South between 1-15 and 300 West are planned.
I-80/U-201/2100 South interchange: The abrupt left-hand entrance from southbound 1-15 to eastbound 1-80 would be eliminated. A more gradual right-hand exit would replace it. There would be smoother and safer connections between I-15 and U-201. Also, U-201 would no longer abruptly end at 2100 South, but would be connected into 1-80. And U-201 would be accessible off 2100 South from standardized freeway entrances at I-15 and at 900 West.
1700 South to 600 South: A new collector distributor road is proposed for southbound traffic from 500 South to 900 South. The new roadway would eliminate problems that currently exist between the I-80 entrance and the 1300-2100 South exit.
I-80 junction near downtown Salt Lake City: The project includes the reconfiguration of this junction of I-80 and westward along I-80 to near the Jordan River.
Access to downtown: The reconfiguration of I-80 would limit access to 500 and 600 South streets leading to the central business district. The connections between I-15 north and 500 and 600 South are proposed to be eliminated. Salt Lake officials have supported access from the north to North Temple, but some neighbors in the area oppose the configuration. High-occupancy lanes would be connected with a 400 South exit.