(Silver Award) State Route Rehabilitation Project, Curry County, N.M.
Contractor: K. Barnett & Sons, Inc.
Owner: New Mexico Department of Transportation
Engineer: CH2M Hill
This $2.54M project consisted of new underground storm drain, lime stabilized sub-grade, 8 in. base course material, 10 in. concrete, curb & gutter, and sidewalk. The project involved 7.5 lane miles along a 1.5 mile-long section of highway in Clovis, N.M.
There were a total of 420 contract days for the project, but K. Barnett & Sons* completed the project in 243. The four lanes of traffic were condensed to two lanes, with two way traffic flowing during construction.
Some 52 businesses along the route were opened and allowed access during construction, and to help with outreach and communications, the contractor sent letters informing business owners and managers ahead of the project.
Most of the work was completed during the span of time from 7:00 p.m. to 7:00 a.m. to take advantage of higher humidity, lower temperatures, and less traffic.
An average of 3,500 vehicles including semi trucks and pedestrian vehicles passed through the construction site daily. In spite of the challenges of paving under traffic, limiting paving to night hours, and dealing with a significant amount of traffic and dozens of businesses in the area, the contractor finished the work ahead of schedule and produced a quality pavement that will serve the area for many years.
(Gold Award) I-49 & Peculiar Way Interchange Improvements, Peculiar, Mo.
Contractor: Emery Sapp & Sons, Inc.
Owner: Missouri Department of Transportation
Engineer: George Butler Associates, Inc.
The I-49 Interchange with Peculiar Way is in growing area of Cass County, Mo. The City of Peculiar and the Missouri DOT partnered to fund the new interchange that has allowed the community to have improved access to schools from Interstate 49 and west of the highway.
This Diverging Diamond Interchange (DDI) allows traffic to cross from the right side of the road to the left side at two signalized intersections on either side of the interchange. These crossovers allow for free flowing right turns in advance of the cross-overs, and free flowing left-turns between the cross-overs. The design enhances the safety and capacity of the interchange.
Additionally, Peculiar Way was extended from School Road through the interchange to Peculiar Drive, thereby creating new access to the northern region of Peculiar.
The project involved more than 130,000 CY of excavation; 4300 feet of storm sewer; a new overpass; two signalized intersections; 6500 SY of sidewalk and median islands; 17,000 feet of curb & gutter; and more than 50,000 SY of concrete paving.
The DDI was completed with minimal impact to travelers and is one of the few such interchanges in Missouri to feature all-concrete construction. The only stringline set up on the job was for the auto-widener on the paver, which paved lanes that varied from 12 ft to 16 ft wide through the DDI.
This $9.4 million project took 13 months to complete, and when it was complete, the community praised the contractor for opening the fully-functional Interchange more than two months early. The new interchange has greatly improved access, and is expected to open the region to more economic development.
* ACPA Member.