UPN: 7621 Project Number: IM 15-5(124)282 Project Name: Emerson Junction – Manchester
This project is to determine how a 3/8” plant mix surfacing (PMS) mix design without a chip seal compares with a 3/4” PMS with a conventional chip seal. Emerson Junction – Manchester is considered a grade, gravel, and PMS project on I-15 west of Great Falls. The project will get a full removal of existing PMS and gravel base and replaced with a geofabric, carrying depth of CAC and two lifts of new PMS. The first lift of PMS on mainline will receive .35’ using a PG 64-28 asphalt binder and second lift at a depth of .20’ using the typical PG 70-28 used for interstate paving. The project limits are from RP 282.2 to 285.9 with the experimental portion of 3/8” PMS in the northbound lanes from RP 283-284 with the remainder of the project being the control.
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