6th Street/US Hwy 14 Reconstruction (from 20th Ave. to 34th Ave.), Brookings, SD
Contractor: BX Civil & Construction
Owner: South Dakota DOT – Brookings Office
Engineer: South Dakota DOT – Pierre Group

This complex reconstruction project was originally scoped by the South Dakota DOT for a two-year completion time frame, but after further discussions with business owners, City of Brookings officials, and the contractor, it was agreed the completion in one year would be best.

The total cost of the project was $17 million, putting it in South Dakota DOT’s Top 10 by dollar volume for 2017. The contract was jointly awarded with the DOT and the city. With the aim of attracting efficient, high quality contractors, the DOT placed significant incentives and disincentives on various phases of the project.

BX Civil & Construction was the prime contractor for the project, which included removing existing pavement, grading, and construction of storm sewer, water main, sanitary sewer, concrete paving (70,000 SY), curb & gutter, and sidewalks. The project also included traffic signals, decorative railings, decorative street lighting, signing and signals along 6th Street (US Hwy 14). In addition, the entire Interstate 29 Brookings Interchange was removed, and a new bridge and ramps were constructed.
Almost 95% of the $17 million was spent with companies located within 60 miles of Brookings.

This project involved 30 to 50 employees working at all times.

  • The intersection at 6th Street & 22nd Avenue was the most time sensitive component of this project. Originally scoped for no more than 75 days, the project team completed it in only 55 days.
  • Four ramps were allowed 21 days each for a total of 84 days, but the team completed the work in only 68.5 days.
  • Phase 2 of the project was completed 11 days ahead of schedule and Phase 3, which was anticipated to be completed on June 30, 2018, but most of the work was completed in the fall of 2017.

In all, the contractor placed 70,385 SY of concrete with a project length equating to about 4 lane miles. With nine intersections/interchanges, a bridge, and 21 businesses along the route, this six-phase project had many complexities.

In addition to the project complexities and accelerated time frame, the project team was also mindful of potential impacts beyond the immediate area. The project involved a major interchange on Interstate 29 and could have made vehicle and pedestrian travel difficult to and from South Dakota State University (SDSU), the state’s largest campus. BX collaborated with SDSU leadership to keep traffic flowing in and around the construction area during peak events, including fall move-in day and five home football games.

Positive TV and newspaper coverage recognized the project team for keeping things running smoothly and quickly.

The challenges were no match for the BX-CC, which worked closely with the DOT and city, landowners, subcontractors, and their own staff to coordinate details closely and carefully. BX-CC was able to successfully complete the project and collect incentives of $411,000, and after the project was completed, the BX-CC employees, subcontractors, and project owners celebrated with a catered barbecue. The project team also gave businesses, residents and travelers something to celebrate, too. They now have a durable roadway that was completed in less than half the time of the original two-year project scope.