QUALITY IN PAVEMENT PRESERVATION QUALITY IN PAVEMENT PRESERVATION I-80 - STAKER PARSON MATERIALS & CONSTRUCTION UDOT SR-248 NOMINEE NOMINEE This project called for 10 miles of I-80 SMA overlay and an experimental single 6-inch lift of HMHMA mixed design for theWendover port of entry. In all, the team placed 41,836 tons. They rotomilled the freeway in both directions to a depth of 1.5 inches and paved back a 1.5-inch depth of SMA with a PG-70-28 binder. That accounted for 41,459 tons. The team also relined existing culverts and installed new end sections. Upon completion, the road was shouldered, and new delineators and rumble strips were placed. At the port of entry, the team removed 6-inches of concrete and asphalt by rotomill, then paved back a single lift of 6-inches of PG 76-34 HMHMA. This experimental operation involved years of preparation and study by UDOT, ensuring the 6-inch one-lift paving method would be successful. (This issue of On the Road has a separate article about the thick lift.) SMA paving always presents challenges to produce, transport and place. With a two-hour haul from the plant to the job site, paving personnel had to handle the SMA correctly to keep it flowing through the Material Transfer Vehicle and paver, without chunks or material loss. To limit risk, they kept a spare MTV, asphalt paver and truck tire repairman on the project as well. The project was one of two UDOT projects on the same stretch of highway. Staker Parson’s contract was to overlay 10 miles of I-80 while another contractor was on the same roadway placing a cable barrier on the shoulder. The teams were in constant communication. Their success is an example of effective partnering with two contractors and UDOT. 3 To reach SR-248, exit US-40 and travel west into Park City. SR-248 passes through beautiful Park City, Utah, and is one of the main access points to the city’s world-renowned ski resorts. You can see many ski runs from the road. SR-248 has repeatedly had different kinds of construction for several years because of water line upgrades, sewer upgrades, and several developments making utility connections. The roadway was in extremely poor condition, and you could feel it as you drove on it. Funding was limited. Members of a UDOT team did what they could with a one-inch mill and a one-inch OGSC treatment. The method that UDOT chose was economical and fixed most of the smoothness issues the roadway had developed over the years. The goal was to get in, get done, and get out as quickly as possible. The project required extensive partnering, problemsolving, and community involvement. Park City had a water main system installed by a separate contractor at the same time as Granite Construction’s project. Both teams had to coordinate their work, and the corridor was very busy with construction traffic at all hours. Also, the corridor has an elementary school and a high school. That causes a high concentration of pedestrians, cyclists, and buses. The reconstruction of 49 pedestrian access ramps along the three-mile stretch of roadway required several detours for the cyclists who use the existing trail system and the youth who walk the route to and from school. The project schedule took place both day and night to comply with the city’s noise ordinance requirements and accommodate local needs. Granite Construction completed the project ahead of schedule and minimized the impacts on everyone using SR-248. The project was tough, but the results are beautiful. 3 39
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